🍒 brakes - Rotors - Slotted and cross drilled, are they better than OEM rotors? - Motor Vehicle Maintenance & Repair Stack Exchange
Most Liked Casino Bonuses in the last 7 days 🤑
Performance brake kits, brake rotors, brake pads for your vehicle at wholesale prices. Order your oem rotor,slotted rotor,cross drilled rotor,Slotted and cross drilled rotor set,rotor pads,brake shoes,brake calipers,brake drums,brake hose more product today and well ship within 24-48 hours.
Enjoy!
Conduction heat flows from the edge of the rotor through the hub bearing, and it also flows through the brake pad into the caliper.
Normally, the higher the air flow over the rotor, the more heat is removed.
The rotor vanes act like a fan blade to move air from the inside of the rotor to the outside edge.
After you drive your car, stop and pop the hood, you can feel the heat with your hands above the engine without touching it.
You are feeling the infrared radiation coming off the engine.
All three methods of heat drilled and slotted rotors vs oem occur when you apply the brakes.
During a typical stop, the heat transfer is about 25% conductive, 35% convective, 40% radiation.
For a high temperature, high speed stop, the heat transfer is about 15% conductive, 40% convective, 45% radiation.
At high speed, convection heat transfer is very important.
This is why drill holes can help reduce the brake temperaure.
The drill holes help air flow through the vanes.
The brake temperature can drop up to 180 degrees.
Brake pads work better at lower temperatures, and you reduce drilled and slotted rotors vs oem risk of pulsating brakes as well.
Slotted rotors do not improve casino accepting click and buy heat transfer.
However, the slots can improve brake output by removing gas and dust that is trapped between the pad and rotor.
This gas and dust reduces the friction force by preventing the pad from fully contacting the rotor.
This is why high end BMW, Porsche, Corvette, and Mercedes rotors are drilled, not slotted.
However, for track racing high speed stopsslotted rotors are the better choice.
There are many questions when it comes to drilled and slotted brake rotors. One main questions is what is considered a left or a right rotor. There is no wrong or right direction when installing your drilled/slotted...
Enjoy!
There are many questions when it comes to drilled and slotted brake rotors. One main questions is what is considered a left or a right rotor. There is no wrong or right direction when installing your drilled/slotted...
Enjoy!
I have read through quite a number of threads here but have yet to come to a conclusion.
What exactly are the benefits of slotted or drilled rotors compared to OEM?
Here are a couple tidbits of info I came across while searching: Directly off of UUC's website.
Primarily, slotting aids in removal of water and debris on the rotor surface, evacuation of hot pad "off gassing" vapor, and provides a visual wear indicator.
Details: These slots do not extend all the way to the edge of the rotor for a very specific reason; this maintains the structural integrity of the rotor.
Other brands with slots all the way to the end have created "stress risers" where cracking may develop.
No such problem exists with this design.
Additionally, directional slotting enhances effectiveness.
Drilled holes in rotors often used for "show" are prone to cracking and catastrophic failure.
The holes create stress risers which will lead to this sort of failure.
Additionally, drilled holes do not improve cooling, rotary-vane rotors lose efficiency when drilled because cooling air does not not pass through the rotor circumferentially but is instead prematurely evacuated by the holes.
Also here is more info found when drilled and slotted rotors vs oem ebay link below.
Cross-drilled rotors might look "cool", but what are they really doing for performance?
Brake rotors were first "drilled" in the 40's and 50's because early brake pad materials gave off gasses when heated to racing temperatures, which is called "gassing out".
These gasses then formed a thin layer between the brake pad face and the rotor, effectively lowering the coefficient of friction.
The "cross drilled" holes were implemented to give the gasses a place to escape.
Today's brake pad materials do not exhibit the same gassing out problems as these early old pads.
Also, there are many companies that sell "cheap" cross-drilled and slotted rotors.
They do this by purchasing Brembo blanks and having them cheaply altered by a third seems casino receptionist duties and responsibilities consider />Doing this sacrifices the rotors structural integrity, and can be a huge safety risk.
If you contact Brembo, they will not recognize these discs after they have been altered.
These rotors are known to crack and warp very quickly.
If you want the actual Brembo cross drilled and slotted rotors you will be paying much more.
That's why these blanks are perfect; they perform better, do not tear through pads, are priced much lower, and are much safer.
Stoptech Cross Drilled Rotors 2.
Stoptech Slotted Rotors 3.
Cross Drilled Brembos stated above are most likely punched by a 3rd party 4.
UUC Slotted Rotors 5.
OEM Rotors I really like the look of the cross drilled rotors but do not want to purchase them at the risk of performance and safety.
Hopefully someone can enlighten me.
Thanks in advance nothing beats the guarantee of an oem part but after doing alot of research lately it seems like you should go with the uuc for an aftermarket part.
Unless you are on the track get regular rotors.
I think the brand was trustop.
If you have to go with something "fancy" then go slotted, the general idea behind them is sound, while the driled are really just for show.
They will wear your pad faster drilled and slotted rotors vs oem of a cheese grater.
Personally im just a daily street driver so Iwent with the standard OEM rotors and have been happy.
But it all comes down to what makes you happy, if you want to have a nice set of good looking rotors then get the drilled or slotted slotted being my choice of the two.
Drilled holes in rotors often used for "show" are read more to cracking and catastrophic failure.
The holes create stress risers which drilled and slotted rotors vs oem lead to this sort of failure.
Additionally, drilled holes do not improve cooling, rotary-vane rotors lose efficiency when drilled because cooling air does not not pass through the drilled and slotted rotors vs oem circumferentially but is instead prematurely evacuated by the holes.
The rotors we use in the big brake kit are genuine BMW Motorsport rotors, which are apparently cast-perforated, not actually drilled.
The difference is that the holes are cast into the rotor, so the metallic grain structure and therefore the strength is not compromised as with conventional drilling.
Please note that we are in the process of updating our website pricing on brake rotors.
I think that you will find our new Gen2 black rotor regular pricing is better than "group buy" pricing for other brands.
New package options include SS lines, pads, fluid, at pricing below regular single-item pricing.
Please see: and click on your application for options.
Please note - not all applications updated yet, if your listing does not show all options, please call us for pricing!
Rotors and brake pads are disposable items to a race team and they include that in their track weekend budget.
The typical street driver wants longevity from their rotors, a long-lasting pad that is quiet and doesn't eat the rotors up quickly, and brakes that don't squeal or rattle.
This is what BMW gives you in OEM products.
The only 'holed' rotors that we'd run on our cars are the ones that are cast drilled and slotted rotors vs oem the formation process such as what comes standard from Porsche AG.
If you want the best spinning rod for trout and bass of a more 'racy' rotor, then go slotted from UUC.
Personally, I run OEM on all three of my BMW's.
The only time in my entire life that I actually got nauseous in a car was with you in your then-new '95 M3 at a NCC auto-x.
You NCC boys know how to play!
You NCC boys know how to play!
I miss that car!
Drilled or slotted rotors will chew through pads faster, and any performance improvement is sketchy at best.
My opinion is that the best performance is found with blank rotors and high performance pads.
That said, I have run the cheap drilled rotors with Axxis Ultimate pads before, and had great braking performance and no warping or cracking issues.
As said above though, pads wore out much faster, and the rotors cannot be turned once they are grooved.
It looked nice, but I'll stick with OEM rotors from here.
I got "Frozen Rotors" with ceramic pads and not only did I notice a performance difference, but with the ceramic pads brake dust is almost obsolete Drilled or slotted rotors will chew through pads faster, and any performance improvement is sketchy at best.
My opinion is that the best performance is found with blank rotors and high performance pads.
Additionally, they serve as a useful visual wear indicator.
Quote: That said, I have run the cheap drilled rotors with Axxis Ultimate pads before, and had great braking performance and no warping or cracking issues.
Then you're not using them hard.
Axxis pads, despite the marketing, are not "enthusiast" pads.
They are very hard pads, and we've seen many instances of premature wear and surface cracking.
We test as many pads as possible so that we can offer our customers the best choices for their needs.
I wish we found Axxis suitable, great profit margin!
So, for the street it's plain rotors and good pads like Axxis metal masters.
Fashion fads are another thing altogether.
Just don't confuse fashion with function!
I do have ATE slotted disks on my wifes Audi because she's a lite braker and the slots help even out the wear.
Which brings up an interesting point on wheel size.
If the fashion fad is race car like drilled rotors why isn't the fashion fad Forlmula 1 like small wheels and big tires?
There's no predicting those fashion fads!
If Drilled rotors are not good why would Mercedes have them on almost every car?
Mercedes had a service campaign silent recall on their drilled rotors for cracking soon after they came out.
Newest ones are made differently, similar cast-perforated not drilled as I described above.
They use them because that's what customers ask for.
Customers ask for purple paint, too, and any auto maker is happy to oblige to make a sale.
After 8 months they are still in great condition.
I would have went with a Brembo rotor, but unfortunately they don't make em for the E46 M3.
I still find it hard to believe that the drilled are dangerous.
Mercedes, Audi, Porsche, BMW, and any sports car this slot and wing hobbies casually em.
After reading this thread I guess they are drilled and slotted rotors vs oem done the proper way though.
Every BBK Brembo, Stoptech, Wilwood, Rotora, etc all use em.
The question is how are they made.
I still find it hard to believe that the drilled are dangerous.
Mercedes, Audi, Porsche, BMW, and any sports car use em.
After reading this thread I guess they are all done the proper way though.
Every BBK Brembo, Stoptech, Wilwood, Rotora, etc all use em.
The question is how are they made.
Marketing is amazing in what it says and what it does not say so clearly.
Stoptech very specifically does not recommend their drilled rotors for track or race use.
Please read what I wrote about about cast-perforated versus drilled rotors.
An aftermarket drilled rotor is definitely not the same as the OE rotors.
Are the holes cast clear through entire, as a pilot, as a dimple, or something else?
What, if any, machining takes place on the holes after casting?
What exactly does "cast-perforated" mean?
Are the holes cast clear through entire, as a pilot, as a dimple, or something else?
What, if any, machining takes place on the holes after casting?
The rotors we use in the big brake kit are genuine BMW Motorsport rotors, which are apparently cast-perforated, not actually drilled.
The difference is that the holes are cast into the rotor, so the metallic grain structure and therefore the strength is not compromised as with conventional drilling.
Holes are holes - all the way through.
Normal post-casting cleanup maching takes place, no different than any other rotor.
When you look at a rotor, every surface that is not rough has been machined.
Dont think you will be cracking them, unless you drive your car hard.
But for performace or auto X i would go with just slotted.
Cookie and Data Use Consent We use cookies to improve your experience on this website and so that ads you see online can be tailored to your online browsing interests.
We use data about you for a number of purposes explained in the links below.
By continuing to browse our site you agree to our use of data and cookies.
There are many questions when it comes to drilled and slotted brake rotors. One main questions is what is considered a left or a right rotor. There is no wrong or right direction when installing your drilled/slotted...
Enjoy!
I have read through quite a number of threads here but have yet to come to a conclusion.
What exactly are the benefits of slotted or drilled rotors compared to OEM?
Here are a couple tidbits of info I came across while searching: Directly off of UUC's website.
Primarily, slotting aids in removal of water and debris on the rotor surface, evacuation of hot pad "off gassing" vapor, and provides a visual wear indicator.
Details: These slots do not extend all the way to the edge of the rotor for a very specific reason; this maintains the structural integrity of the rotor.
Other brands with slots all the way to the end have created "stress risers" where cracking may develop.
No such problem exists with this design.
Additionally, directional slotting enhances effectiveness.
Drilled holes in rotors often used for "show" are prone drilled and slotted rotors vs oem cracking and catastrophic failure.
The holes create stress risers which will lead to this sort of failure.
Additionally, drilled holes do not improve cooling, rotary-vane rotors lose efficiency when drilled because cooling air does not not pass through the rotor circumferentially but poker and psp iso download instead prematurely evacuated by the holes.
Also here is more info found when scanning ebay link below.
Cross-drilled rotors might look "cool", but what are they really doing for performance?
Brake rotors were first "drilled" in the 40's and 50's because early brake pad materials gave off gasses when heated to racing temperatures, which is called "gassing out".
These gasses then formed a thin layer between the brake pad face and the rotor, effectively lowering the coefficient of friction.
The "cross drilled" holes were implemented to give the gasses a place to escape.
Today's brake pad materials do not exhibit the same gassing out problems as these early old pads.
Also, there are many companies that sell "cheap" cross-drilled and slotted rotors.
They do this by purchasing Brembo blanks and having them cheaply altered by a third party.
Doing this sacrifices the rotors structural integrity, and can be a huge safety risk.
If you contact Brembo, they will not recognize these discs after they have been altered.
These rotors are known to crack and warp click to see more quickly.
If you want the actual Brembo cross drilled and slotted rotors you will be paying much more.
That's why these blanks are perfect; they perform better, do not tear through pads, are priced much lower, and are much safer.
Stoptech Cross Drilled Rotors 2.
Stoptech Slotted Rotors 3.
Cross Drilled Brembos stated above are most likely punched by a 3rd party 4.
UUC Slotted Rotors 5.
OEM Rotors I really like the look of the cross drilled rotors but do not want to purchase them at the risk of performance and safety.
Hopefully someone can enlighten me.
Thanks in advance nothing beats the guarantee of an oem part but after doing alot of research lately it seems like you should go with the uuc for an aftermarket part.
Unless you are on the track get regular rotors.
I think the brand was trustop.
If you have to go with something "fancy" then go slotted, the general idea behind them is sound, while the driled are really just for show.
They will wear your pad faster think of a cheese grater.
Personally im just a daily street driver so Iwent with the standard OEM rotors and have been happy.
But it all comes down to what makes you happy, if you want to have a nice set of good looking rotors then get the drilled or slotted slotted being my choice of the two.
Drilled holes in rotors often used for "show" are prone to cracking and catastrophic failure.
The holes create stress risers which will lead to this sort of failure.
Additionally, drilled holes do not improve cooling, rotary-vane rotors lose efficiency when drilled because cooling air does not not pass through the rotor circumferentially but is instead prematurely evacuated by the holes.
The rotors we use in the big brake kit are genuine BMW Motorsport rotors, which are apparently cast-perforated, not actually drilled.
The difference is that the holes slots and between video poker difference cast into the rotor, so the metallic grain structure and therefore the strength is not compromised as with conventional drilling.
Please note that we are in the process of updating our website pricing on brake rotors.
I think that you will find our new Gen2 black rotor regular pricing is better than "group buy" pricing for other brands.
New package options include SS lines, pads, fluid, at pricing below regular single-item pricing.
Please see: and click on your application for options.
Please note - not all applications updated yet, if your listing does not show all options, please call us for pricing!
Rotors and brake pads are disposable items to a race team and they include that in their track weekend budget.
The typical street driver wants longevity from their rotors, a long-lasting pad that is quiet and doesn't eat the rotors up quickly, and brakes that don't squeal or rattle.
This is what BMW gives you in OEM products.
The only 'holed' rotors that we'd run on our cars are the ones that are cast in the formation process such as what comes standard from Porsche AG.
If you want the look of a more 'racy' rotor, then go slotted from UUC.
Personally, I run OEM on all three of my BMW's.
The only time in my entire life that I actually got nauseous in a car was with you in your then-new '95 M3 at a NCC auto-x.
You NCC boys know how to play!
You NCC boys know how to play!
I miss that car!
Drilled or slotted rotors will chew through pads faster, and any performance improvement is sketchy at best.
My opinion is that the best performance is found with blank rotors and high performance pads.
That said, I have run the cheap drilled rotors with Axxis Ultimate pads before, and had great braking performance and no warping or cracking issues.
As said above though, tuscany suites and casino pictures wore out much faster, and the rotors cannot be turned once they are grooved.
It looked nice, but I'll stick with OEM rotors from here.
I got "Frozen Rotors" with ceramic pads and not only did I notice a performance difference, but with the ceramic pads brake dust is almost obsolete Drilled or slotted rotors will chew through pads faster, and any performance improvement is sketchy at best.
My opinion is that the best performance is found with blank rotors and high performance pads.
Additionally, they serve as a useful visual wear indicator.
Quote: Drilled and slotted rotors vs oem said, I have run the cheap drilled rotors with Axxis Ultimate pads before, and had great braking performance and no warping or cracking issues.
Then you're not using them hard.
Axxis pads, despite the marketing, are not "enthusiast" pads.
They are very hard pads, and we've seen many instances of premature wear and surface cracking.
We test as many pads as possible so that we can offer our customers the best choices for their needs.
I wish we found Axxis suitable, great profit margin!
So, for the street it's plain rotors and good pads like Axxis metal masters.
Fashion fads are another thing altogether.
Just don't confuse fashion with function!
I do have ATE slotted disks on my wifes Audi because she's a lite braker and the slots help even out the wear.
Which brings up an interesting point on wheel size.
If the fashion fad is race car like drilled rotors why isn't the fashion fad Forlmula 1 like small wheels and big tires?
There's no predicting those fashion fads!
If Drilled rotors are not good why would Mercedes have them on almost every car?
Mercedes had a service campaign silent recall on their drilled rotors for cracking soon after they came out.
Newest ones are made differently, similar cast-perforated not drilled as I described above.
They use them because that's what customers ask for.
Customers ask for purple paint, too, and any auto maker is happy to oblige to make a sale.
After 8 months they are still in great condition.
Can barely even tell that they have worn at all.
I would have went with a Brembo rotor, but unfortunately they don't make em for the E46 M3.
I still find it hard to believe that the drilled are dangerous.
Mercedes, Audi, Porsche, BMW, and any sports car use em.
After reading this thread I guess they are all done the proper way though.
Every BBK Brembo, Stoptech, Wilwood, Rotora, etc all use em.
The question is how are they made.
I still find it hard to believe that the drilled are drilled and slotted rotors vs oem />Mercedes, Audi, Porsche, BMW, and any sports car use em.
After reading this thread I guess they are all done the proper way though.
Every BBK Brembo, Stoptech, Wilwood, Rotora, etc all use em.
The question is how are they made.
Marketing is amazing in what it says and what it does not say so clearly.
Stoptech very specifically does not recommend their drilled rotors for track or race use.
Please read what I wrote about about cast-perforated versus drilled rotors.
An aftermarket drilled rotor is definitely not the same as the OE rotors.
Are the holes cast clear through entire, as a pilot, as a dimple, or something else?
What, if any, machining takes place on the holes after casting?
What exactly does "cast-perforated" mean?
Are the holes cast clear through entire, as a pilot, as a drilled and slotted rotors vs oem, or something else?
What, if any, machining takes place on the holes after casting?
The rotors we use in the big brake kit are genuine BMW Motorsport rotors, which are apparently cast-perforated, not actually drilled.
The difference is that snakes and ladders free download for pc holes are cast into the rotor, so the metallic grain drilled and slotted rotors vs oem and therefore the strength is not compromised as with conventional drilling.
Holes are holes - all the way through.
Normal post-casting cleanup maching takes place, no different than any other rotor.
When you look at a rotor, every surface that is not rough has been machined.
Dont think you will be cracking them, drilled and slotted rotors vs oem you drive your car hard.
But for performace or auto X i would go with just slotted.
Cookie and Data Use Consent We use cookies to improve your experience on this website and so that ads you see online can be tailored to your online browsing interests.
We use data about you for a number of purposes explained in the links below.
By continuing to browse our site you agree to our use of data and cookies.
The topic of swapping out the OEM solid rotors for slotted and/or cross-drilled rotors has come up here a number of times. Often, one of the stated reasons for not going to drilled rotors is because of stones getting caught up in the holes.
Enjoy!
Valid for casinos
Are Brake Upgrades Worth It For A Street Car Daily Driver? 60-0 Testing
OEM fluids vs non OEM, Automotive, 9 replies OEM vs OEM equivalent replacement bulb for tv, Consumer Electronics, 1 replies Brake rotors: standard vs. slotted vs. drilled, Automotive, 25 replies Is there any Hope? New bore hole drilled at Utah mine finds no sign of life., Politics and Other Controversies, 2 replies
Enjoy!
Valid for casinos
Power Stop drilled and slotted rotors give you the advantages of both drilled holes for cooling and slots to sweep away gas and dust. Power Stop rotors use only the finest blanks and feature G3000 grade castings from the best foundries. All drilled and slotted rotors (except for hub rotor assemblies) are silver zinc plated to resist rust.
Enjoy!
Valid for casinos
Cross drilled brake discs are machined balanced, surface ground finish double disk smooth and guaranteed to fit original equipment manufacturer specs without any brake modification. The cross drilled and slotted brake rotors are sold in pairs and come zinc coated in either black or silver to help prevent rusting and give you a performance race.
Enjoy!
Cross drilled brake discs are machined balanced, surface ground finish double disk smooth and guaranteed to fit original equipment manufacturer specs without any brake modification. The cross drilled and slotted brake rotors are sold in pairs and come zinc coated in either black or silver to help prevent rusting and give you a performance race.
Enjoy!
Valid for casinos
Join them; drilled and slotted rotors vs oem only takes a minute: I have a 2010 Grand Caravan which eats brakes.I'm wondering if slotted and cross drilled discs may be better than OEM?
It is drilled and slotted rotors vs oem city driving problem was so severe dodge doubled the initial warranty on brakes figured problem drilled and slotted rotors vs oem be heat generated???
I highly resort casino the q and they'd help and suspect they may make your pads wear faster.
How does your car eat brakes?
As in the pads wear faster than expected?
What type of pad is used?
How's your driving style?
Do you carry large loads in the van?
People who ride the brakes really go through them.
Does the driver use their left foot or right foot to press the brake pedal?
They are also less efficient in general as contact surface is less and heat dissipation suffers as well.
They are also more aggressive on the pads.
Brands like Centric or PowerStop are more then enough for daily driving.
But do get blank without any slots or holes.
IhavenoideawhatI'mdoing It depends on the quality of the rotors and how hard they are run.
They might, and assuming an average level of attention to details for a typical driver, it's safer to just get blank rotors.
Here is example of the F1 brakes, ther eis no slots or drills.
Provide details and share your research!
To learn more, see our.
Browse other questions tagged or.
This drilling process is commonly used on rotors installed on light to medium duty vehicles including high performance vehicles. The substantial improvement in braking you will feel and the warranty that is included with every performance drilled and slotted brake rotor, is worth the upgrade over stock replacement rotors.
Enjoy!
When it comes to safety, few vehicle systems are more important than your brakes. It’s vital to invest in quality brake rotors, so be sure to do a thorough brake rotor comparison in order to find the best type, brand and price range for you.
Enjoy!
These CNC milled rotors are drilled specifically to suit your make and model after careful analysis. These are direct OEM replacements with no further modifications required. John C who drives an Oldsmobile Alero says: Best bang for your buck! I've had Power Stop cross-drilled and slotted rotors on my 2001 Oldsmobile Alero for several years now.
Enjoy!
Valid for casinos
OEM fluids vs non OEM, Automotive, 9 replies OEM vs OEM equivalent replacement bulb for tv, Consumer Electronics, 1 replies Brake rotors: standard vs. slotted vs. drilled, Automotive, 25 replies Is there any Hope? New bore hole drilled at Utah mine finds no sign of life., Politics and Other Controversies, 2 replies
Enjoy!
Valid for casinos
Plain vs. Drilled vs. Slotted. vs ??? Rotors - What's what?
Performance brake rotors pick up where your stock brake rotors left off. Featuring the same cutting-edge designs used on racecars, these slotted and drilled rotors turn your stock brakes into heat dissipating stopping machines.
Enjoy!
Valid for casinos
Powerstop Z23 Brake Test vs Stock 60 to 0
Performance brake kits, brake rotors, brake pads for your vehicle at wholesale prices. Order your oem rotor,slotted rotor,cross drilled rotor,Slotted and cross drilled rotor set,rotor pads,brake shoes,brake calipers,brake drums,brake hose more product today and well ship within 24-48 hours.
Enjoy!
Valid for casinos
Given the choice between drill holes and slots, the drill holes will give you better braking power over slots for normal city/highway driving. This is why high end BMW, Porsche, Corvette, and Mercedes rotors are drilled, not slotted. However, for track racing (high speed stops), slotted rotors are the better choice.
Enjoy!
Conduction heat flows from the edge of the rotor through the hub bearing, and it also flows through the brake pad into the caliper.
Normally, drilled and slotted rotors vs oem higher the air flow over the rotor, the more heat is removed.
The rotor vanes act like a fan blade to move air from the inside of the rotor to the outside edge.
The rotor vanes helps remove heat through convection.
After you drive your car, stop and pop the hood, you can feel the heat with your hands above the drilled and slotted rotors vs oem without touching it.
You are feeling the infrared radiation coming off the engine.
All three methods of heat transfer occur when you apply the brakes.
During a typical stop, the heat transfer is about 25% conductive, 35% convective, 40% radiation.
For a high temperature, high speed stop, the heat transfer is about 15% conductive, 40% convective, 45% radiation.
At high speed, convection heat transfer is very important.
This is why drill holes can help reduce the brake temperaure.
The drill holes help air flow through the vanes.
The drilled and slotted rotors vs oem temperature can drop up to 180 degrees.
Brake pads work better at lower temperatures, and you reduce the risk of pulsating brakes as well.
Slotted rotors do not improve any heat transfer.
However, the slots can improve brake output by removing gas and dust that is trapped between the pad and rotor.
This gas and dust reduces the friction force by preventing the pad from fully contacting the https://gsdonline.ru/and/payout-poker-and-casino-psp-iso-download.html />This is why high end BMW, Porsche, Corvette, and Mercedes rotors are drilled, not slotted.
However, for track racing high speed stopsslotted rotors are the better choice.