After getting a wheel alignment, I was told that my rear lower control arm needed to be replaced because it couldn't be adjusted which is causing wear on my tire. I shopped this work around to a few other shops and one shop told me that the rear lower control arm on my vehicle couldn't be adjusted. The folks who did the alignment said that my wheel couldn't be adjusted because the control arm needed to be replaced. Could it be that the control arm simply needs to be replaced and that's what's causing the abnormal wear on my back tire?