CAP Auto Products

The only reason I'm looking into these new arms is because I am sick of killing the inside of my tires. The front end was rebuilt a few years ago and I've had multiple alignments done with no improvement. Otherwise I'd leave the stock ones alone. And the only reason I'm looking at CAP and Hotchkis is because they are the only mans that make a control arm that doesn't require me yanking the spindles and machining them for a larger ball joint. I'd prefer to not have different sizes of ball joints from top to bottom. So that's my boggle

I'm sorry, not to go off course, but what would changing the upper control arms have to do with the wearing of the inside of your tires? Most of the aftermarket arms add caster to your alignment. Caster is not a tire wearing angle. It usually takes a lot of camber to wear an edge of a tire. Improper toe is the main culprit of early tire death. What specs are all these alignment shops using? Is there perhaps a problem with another part causing your trouble?