Alright all innocently I take off my front rotors to get machined at the local auto parts store/ machine shop. As luck would have it, one was just out of spec (they are original 100K rotors so I kinda figured). anyway I went ahead and bought new front rotors from them @ $33 a piece. They are 'TRUST' brand (HIGHLY doubt its associated with GReddy, etc). They looked fine to me.

I put them on and did all the right things, torques caliper and wheel lug nuts exactly to spec, etc. I used the old pads initially to bed in the rotors, then swapped in my new KVR carbon metallic pas the next day. Well immediately aftert he new rotors were installed, I drove around lightly applying the brakes to bed them in. After a while, I noticed a shimmy in the brake pedal, and sometims in the steering wheel. It's gotten a little better since I installed the new pads, but under light braking the pedal will shimmy. Under havy braking it also does, but much less.

Are these brand new rotors warped already? I think I'll take them back to the shop and tell them to turn them or give me a refund.

any thoughts? Gonna do the rear brakes soon also...

 

I will at times turn new rotors, try to remove at little as possible. Sure it will decrease the life spand but I'm reducing the chance of pedal pulsation. You never know how "your rotors" was ship and stock while in a warehouse. There is a right and wrong way to store items such as rotors, piston rods, crank shaft, etc. Just one of my many $0.02

 

I agree with Candiman. You might want to try and turn
the new rotors.

 

When breaking in new brakes, there are a few keys points.

1] The hub assemble needs to be perfectly clean.
2] All lugs need to be exactly torqued the same.

The break in process is 35 mph, depress the brake pedal in 5 mph increments. Do this 5 times. If no shimmy appears then normal driving for 200 miles.

The rotor should fall on the hub like butter. The run out should be no more than 5 thousanths.

Regards