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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > m3 e92 with ap racing brake



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      01-30-2013, 11:57 PM   #1
yusammyyu
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m3 e92 with ap racing brake

I installed Ap racing brake kit before track day, it works perfectly on the track, but I found noise problem after track.

I totally understand and accept the brake pad will squeal when I slightly brake it under low speed , but now the problem is , after I make complete stop, release brake and start moving, I can feel the front pad still rub the roter make the entire car under high frequency vibration, the vibration feels exactly like the noises when you push a table on a concrete surface.

Usually the vibration will goes away when the speed is over 10 mph (keep wheel straight) , and will come out when I make turns around 25-30 mph after brake(on the ramp to exit freeway or make turns at intersection) .

Any one has experience on this?? is this normal??
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      01-31-2013, 01:58 AM   #2
Hybrid For Life
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Sounds like something is binding up, I'd check the pads where they contact the caliper, away from the piston. Maybe something needs some grease
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      01-31-2013, 03:41 AM   #3
crypticc
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Quote:
Originally Posted by Hybrid For Life View Post
Sounds like something is binding up, I'd check the pads where they contact the caliper, away from the piston. Maybe something needs some grease
Fifteen years ago or so I had to copper grease my first car's brakes once a month or I got the brake binding like you, same thing. Fiat Uno though so hopefully yours doesn't need such regular TLC
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      01-31-2013, 05:05 PM   #4
JHodgman
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What pad material are you using?
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