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      06-09-2009, 08:45 PM   #13
syncros
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Drives: 2008 M3 Coupe
Join Date: Oct 2008
Location: Montreal

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You were right!
I removed the front wheel and realized that the front left wheel was tough to turn on without any brake applied to it. I removed the disks, lightly sand them and reinstalled the OEM pads and I must say that the vibration is almost all gone. I will double check and confirm tomorrow after a full day of driving the car. I'm just amazed at how much uneven pad deposit on the rotors can create such vibration.

Would I be better to have a set of dedicated rotors for track usage or should it be ok to use the same rotors with 2 types of pads? (I intend to track the car for about 10 days per year)

Thanks to you all, Vince
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