cross drilled, slotted rotors how long?

[JDMJAYDC2]

ok ive had these brembro cross drilled rotors on my car for about 4 or so years and wanted to know how long do they actually last some of the holes are starting to become covered in brake dust im assuming thats what it is but i was curious on how long do these style rotors actually last as you dont have to have them resurfaced like oem rotors

[Dietcoke]

At the outside of all brake rotors should be a bevel. Once that bevel is worn away, the rotor is garbage. Or you can use a micrometer vs mfr's specs.


FWIW you can resurface a drilled rotor with proper equipment

[speedminded]

At the outside of all brake rotors should be a bevel. Once that bevel is worn away, the rotor is garbage. Or you can use a micrometer vs mfr's specs.


FWIW you can resurface a drilled rotor with proper equipmentFor the cost just get new rotors, preferably Brembo blanks considering crossdrilliing is pointless.

[Doppelgänger]

crossdrilled ftl

[JDMJAYDC2]

crossdrilled ftl

really??? i liked the look of them plus i dont plan on getting rims bigger than 15 so a big brake upgrade was out of the question i noticed i stopped alot quicker with then vs my oem ones plus like i said the looks were good i never noticed a bevel at the end of them maybe ill check that out so what do you guys suggest for me if im not going any larger than a 15 in wheel and this isnt going to be a track car

[speedminded]

really??? i liked the look of them plus i dont plan on getting rims bigger than 15 so a big brake upgrade was out of the question i noticed i stopped alot quicker with then vs my oem ones plus like i said the looks were good i never noticed a bevel at the end of them maybe ill check that out so what do you guys suggest for me if im not going any larger than a 15 in wheel and this isnt going to be a track carI'm sure you put new pads on when you put those rotors on too right? :yes: Of course it would feel better and possibly stop better then :tongue: Not saying get a big brake kit...just cross drilling is pointless, it serves NO use in street or racing applications -- it's strictly for looks and now that you've worn them down below the counter sunk bevel the holes are just collecting brake dust and possibly eating your pads faster than normal. I would just get blanks :2cents:

[Dietcoke]

I'm sure you put new pads on when you put those rotors on too right? :yes: Of course it would feel better and possibly stop better then :tongue: Not saying get a big brake kit...just cross drilling is pointless, it serves NO use in street or racing applications -- it's strictly for looks and now that you've worn them down below the counter sunk bevel the holes are just collecting brake dust and possibly eating your pads faster than normal. I would just get blanks :2cents:

This is good advice.

Only thing I'll add to it is that high performance (track) brake pads aren't always going to stop you faster. Generally, they take slightly longer to stop, especially on the street. Reason being is they're designed to stop well, and consistently, when HOT. (IE: track use)

[Doppelgänger]

really??? i liked the look of them plus i dont plan on getting rims bigger than 15 so a big brake upgrade was out of the question i noticed i stopped alot quicker with then vs my oem ones plus like i said the looks were good i never noticed a bevel at the end of them maybe ill check that out so what do you guys suggest for me if im not going any larger than a 15 in wheel and this isnt going to be a track car

Well, drilled rotors were useful back when brake pad technology wasnt so great. Old materials used to get hot and create a 'pillow' of gases between the rotor and the pad. The holes released this gas. Now with todays pads, gassing does not happen, so there is no need to have it on a street car. Yes, in some applications on race cars it works as designed, but we are not driving full blown race cars on the street.

Here is another perspective. Take all the surface area of those holes and add them up. Now take the same sized blank rotor and shave all that surface area off the outside, it will be significantly smaller. Less surface area = hotter brakes. But the whole thing is the 'looks', thats how they sucker you in to buying them.


Spinner- Yes, that is true of a pure race pad, like a Hawk Black. But there are plenty of brake pads that are suitable for street and track, like the Hawk HP+ that i currently run.

[Dietcoke]

Ive got HP+ pads in the sky myself. Good pads.