problem started a little while ago after I put a new set of Zeal rotor, under moderate braking at and above 170km (only happens at high speed), i feel a wobble in the steering wheel and the brake pedal,now i fitted the OEM rotor back on still do the same thing, its not the ABS, I know what that feels like. Warped rotors or something else?? Thanks in advance

 

Get your wheels balanced, Fronts AND backs.

See if that helps.

 

http://www.stoptech.com/whitepapers/...otors_myth.htm

If you have put a dial indicator on the rotor and measured run-out... please disregard the above link.