new spacers and studs; now sterring wheel vibrates

ChrisSlicks

Yeah brake vibration is annoying. There are a couple of things that can cause it in a fixed caliper setup.

1) Sticking piston. If pressure from the pistons is applied unevenly to the rotor then it will distort the rotor under braking and transfer it to the hub and wheel.

2) Pads leaving deposits on rotors. I had this with the DS2500 pads, they worked great for the 1st session, started getting a little vibration in the 2nd session, and by the end of the day they shake was horrible. When I pulled the pads I could see they were wearing very quickly and tapering. I switched pads and tried to scrub off as much as I could. Eventually they came true again (2-piece AP).

3) Warped rotor, or over expanded rotor ring. For fixed mount 2-piece rotors if you get them outside of their operating temperature range they can bind up in the hat hardware and cause distortion.

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