I have a '90 300Z 2+2. The rear end "kicks out" over bumps over 30mph. Could this be a wheel bearing, differential or something else? It seems like the car shifts to the right about an inch or so when I hit a slight bump while driving.

Thanks.

 

Are your shocks worn out? My Z did the same thing (felt like something was loose or broken in the rear end - the back end also wheel hopped when taking off hard at sharp turns) and changing out the shocks took care of the problem.