new OEM front rotors out of round?

[we350z]

Thanks man, this makes the most sense to me. I was leaning towards a suspension issue after all the tests i've done anyway but what your describing convincingly sounds like my issue.

I'll order the bushings, pull the arms and pay somone to seat them. The way I see it is if it fixes the problem, great. If not they prob need replacing sometime soon anyway with almost 70K on the vehicle.

I am not getting a constant shimmy, in fact when I apply the brakes softly at any speed I don't get the jerk at all. Once the jerk is done it stops. I think what you are saying sounds right.

Thanks so much for the deductive reasoning. I'll post up a pic of my 8 year old bushings when i get a chance.

Originally Posted by weasel56

You can get them separate from the arms, will probably cost you $30-$60, not fully sure on the price... and can be changed with a shop press, if you know anyone who will let you use theirs... or just do it for you for a decent price.

It is a safe bet to just go ahead and change them before you throw another set of expensive rotors on it... because like I said, if it is the rotors, it would be a CONSTANT shimmy the entire time you were braking, and would be directly connected to wheel speed. You would feel the difference from lets say 30 mph to 50 mph.