Front
Rotor, checking
^ Remove wheel.
^ Rotate disc brake and check rotor for damage or dirt.
^ If rotor is damaged, remove and replace wheel hub with rotor.
Checking rotor lateral run-out
^ Turn wheel hub and check that gap -a- between rotor and speed sensor Is uniform.
^ Distance a = 0.3 mm
^ If lateral run-out is out of tolerance, remove and replace wheel hub with rotor.