Rotors warped again

[clayB]

About a year ago I put on new brakes: Brembo Blanks and Ceramic pads, all four corners. I went out for three track days, and drove about 10,000km with no problems. Then went out to a 4th day at the track and my front rotors warped (noticed on the way home). When I checked them they still had a lot of material so I had them turned. They were smooth for about 5000km then they warped again (no track days, its winter).

They still have lots of thickness, although I don't think I 'll have them turned again. But before I put fresh rotors on is there anything else that could be causing them to warp. I am always very sure to torque all the wheels evenly.

Could I have a sticky caliper? other possible problems?

Thanks

Clayton

[1997328IS]

Driving really hard, then just parking it often?

[clayB]

The first time that may have been the case, but I always take a cool down lap, same as the three previous track outings. But that wouldn't explain the second incident, it was late fall when it happened...just regular every day driving.

[kevinqjhps]

About a year ago I put on new brakes: Brembo Blanks and Ceramic pads, all four corners. I went out for three track days, and drove about 10,000km with no problems. Then went out to a 4th day at the track and my front rotors warped (noticed on the way home). When I checked them they still had a lot of material so I had them turned. They were smooth for about 5000km then they warped again (no track days, its winter).

They still have lots of thickness, although I don't think I 'll have them turned again. But before I put fresh rotors on is there anything else that could be causing them to warp. I am always very sure to torque all the wheels evenly.

Could I have a sticky caliper? other possible problems?

Thanks

Clayton


Well you torque your wheels, a good thing. A sticky caliper will show up by looking at your pads, do they wear the same? Only thing left is HOW you apply your brakes: Do you start lightly pressing the pedel 100-150 meters before you get to a light? Do you wait till you are right on the light then stand on the brakes? Probably more to do with your driving style.

[clayB]

Generally I brake pretty lightly, but there are always those cases when you have to get on the brakes.

I'll take a look at the pads, when I get a chance

Thanks

[Evil Spoonman]

Uneven pad deposits! Not warped rotors!

[clayB]

how would you get rid of bad pad deposits?

[choffa]

http://www.stoptech.com/tech_info/wp_warped_brakedisk.shtml

[MaxxChris]

^^^ Great info in that article. I have heard that by heating up the rotors and working them hard (i.e. brake hard) you can "clean up" the rotors and get a nice new even deposit of pad material on the braking surface. I have never tried it but it might be worth a shot.

[jmo69]

^^^ Great info in that article. I have heard that by heating up the rotors and working them hard (i.e. brake hard) you can "clean up" the rotors and get a nice new even deposit of pad material on the braking surface. I have never tried it but it might be worth a shot.
When I bedded in my new brakes, I did 10 50-10 mph stops with 'medium' pedal pressure and the only thing I feel from them is the braking force. No wobble, judder or pulse. Granted I don't drive it like I stole it either. Just my $.02

[vap3]

http://www.stoptech.com/tech_info/wp_warped_brakedisk.shtml

highly recommended

[clayB]

I had bedded them in, although I didn't do ten 60-5mph breaks, as soon as the roads thaw a bit and there is enough grip for a good brake I'll try the bedding process again and see if it helps

[bmwguy99]

maybe the calipers arent aligned properly in proportion to the rotor causing one side to hit/push the disc before the other or under light braking?