What are size of failing rear upper control arms? My rear passenger side has a serious problem of shaking and dancing to the side when I go over bumps. The faster the worst. I've be driving down a highway say at 65mph and hit some minor road bumps and the rear pass knocks like hell and then kicks the rear in the opposite direction towards the driver side. I already have a set of new struts ready to go in but I want to do everything while I'm in there you know, its cold out. FYI its my dd accord wagon.