Upgrade brakes

[nine11c2]

Virtually all brakes require that burn in. The company installing will typically do it.

 

[nine11c2]

If you actually care about braking performance in emergency stop situations, you wouldn't run slotted/cross drilled rotors. They reduce the surface area on the rotors for the pad to bite on. And most of the aftermarket slotted/cross drilled rotors aren't properly designed to actually aid in cooling as they are advertised, since they are just regular rotors with slits and holes cut into them with no change to the fun inside to aid in cooling.

If you just want them for the looks to say you have them, then go for it

Thats BS.. they keep the brakes cooler so while theres less swept area, they can be cooler. If the pads and rotors are bigger, you get more surface area AND you get the cooling of slotted/drilled. Most brakes are strong enough they just heat up and stop effectivness or warp. And a good deal is in the caliper, how evenly it applies pressure and the pad materials.
So on the initial step given the exact same stuff, you might be right, in the real world, you're not. Don't give bad advice..

 

[Maverik259]

Thats BS.. they keep the brakes cooler so while theres less swept area, they can be cooler. If the pads and rotors are bigger, you get more surface area AND you get the cooling of slotted/drilled. Most brakes are strong enough they just heat up and stop effectivness or warp. And a good deal is in the caliper, how evenly it applies pressure and the pad materials.
So on the initial step given the exact same stuff, you might be right, in the real world, you're not. Don't give bad advice..

While I generally try not to bash posts that are years old, I will agree with you partially on this point. His general information is kind of correct. But assuming that these rotors are not properly made to utilize the holes and slots is just sloppy and typical of most internet jockeys.

Yes there is “less” surface area…is it enough to actually cause a negative effect to stopping distance?

Absolutely not. Rotors and brake pads are a fraction of a vehicles ability to stop. Holes are for off gassing and more beneficial in heavy consistent braking than one off emergency braking. Slots are better in cleaning the pad surface of water and debris.

Majority of the stopping power is in the tires. Hence why many are citing the “ability” to lock up your tires indicates hard rubber or rather off road focused rubber and not street tires. Unfortunately you have to make sacrifices when it comes to performance mods. Name of the game and nothing wrong with it.


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[HSKR R/T]

Thats BS.. they keep the brakes cooler so while theres less swept area, they can be cooler. If the pads and rotors are bigger, you get more surface area AND you get the cooling of slotted/drilled. Most brakes are strong enough they just heat up and stop effectivness or warp. And a good deal is in the caliper, how evenly it applies pressure and the pad materials.
So on the initial step given the exact same stuff, you might be right, in the real world, you're not. Don't give bad advice..

While I generally try not to bash posts that are years old, I will agree with you partially on this point. His general information is kind of correct. But assuming that these rotors are not properly made to utilize the holes and slots is just sloppy and typical of most internet jockeys.

Yes there is “less” surface area…is it enough to actually cause a negative effect to stopping distance?

Absolutely not. Rotors and brake pads are a fraction of a vehicles ability to stop. Holes are for off gassing and more beneficial in heavy consistent braking than one off emergency braking. Slots are better in cleaning the pad surface of water and debris.

Majority of the stopping power is in the tires. Hence why many are citing the “ability” to lock up your tires indicates hard rubber or rather off road focused rubber and not street tires. Unfortunately you have to make sacrifices when it comes to performance mods. Name of the game and nothing wrong with it.


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Any cross drilled rotor you are buying at a parts store, or from places like RockAuto, for a vehicle that was never offered with cross drilled rotors from the factory are just cheap solid rotors that have holes drilled in then. They are not designed for being cross drilled. Now this obviously doesn't apply to every single cross drilled rotor, but if you aren't paying thousands of dollars for new rotors, then you aren't getting rotors that were designed to be cross drilled.

You can try to refute this, it you'd have a hard time finding anything to say otherwise.

 

[Maverik259]

Well considering SHW (oem makers) rotors for my M5 were about $300 a piece I’ll refute that I guess. EBC are also a couple hundred a piece and they’re pretty well known for quality and racing. I agree there are cheap options. And power stop very well may be, idk, I’ve never owned their rotors but I had their carbon pads on my X5M. But just because they’re sold at a parts store like rock auto doesn’t automatically mean they’re useless.

And just because a manufacturer puts drills or slotted rotors on from the factory hardly means oem is the only quality option. No car manufacturer makes brake components in house.


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[HSKR R/T]

Well considering SHW (oem makers) rotors for my M5 were about $300 a piece I’ll refute that I guess. EBC are also a couple hundred a piece and they’re pretty well known for quality and racing. I agree there are cheap options. And power stop very well may be, idk, I’ve never owned their rotors but I had their carbon pads on my X5M. But just because they’re sold at a parts store like rock auto doesn’t automatically mean they’re useless.

And just because a manufacturer puts drills or slotted rotors on from the factory hardly means oem is the only quality option. No car manufacturer makes brake components in house.


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Where did I say OEM was only quality option? I was saying that, unless there was a factory available cross drilled rotor for your vehicle, finding a set of aftermarket cross drilled rotors, that were actually designed to be cross drilled will be futile. And by that I'm not talking about big brake upgrade kits, I'm talking OEM replacement fitment.