Brake dust
 

The steering was vibrating from 90-115km/h, so I thought it might be the wheel out of balance, went to balance it, still did not solve the problem, so it might be the bearings, took the rotors off, bearings still in good condition, then I noticed the brake dust accumulated in the drilled holes on the in side rotors. took a 4mm drill bit and cleared all the dust and went to test the ride, all was ok! Anyone had this problem before? :)

one of the reasons i don't run cross drilled. i have heard that quite a few times. mind you, this is from hearsay though since it was enough to make me not bother to run them. basically a cheese grader for your brake pads unless the rotor is dead flat at all heat levels. they do look cool though.