the rear tires on my car are both worn down much more on the inside then they are on the outside. it seems to me like this would be bad alignment but i wouldnt think theres anything you could align on a straight axle rear end. i know my front is way out of alignment and would this then cause the back tires to wear funny? i was planning on getting a 4wheel alignment when my new front tires got here sometime this week but then my dad brought this to my attention and now i dont know if i should get a 4 or 2 wheel alignment. any suggestions?

 

Have those rear tires spend any time on the front of that car?

Some cars the axles can be moved to point left or right but an inner edge wear on the tire sound like a camber problem.
Camber is not adjustable on a straight axle car. It would mean it's bent and having both ends bent is not likely.

 

Wearing on the inner edge is pretty normal of sn95 mustang rear tires from what I've noticed. A bunch of people I know with sn95's I've changed tires on there car and the rearsinner edges are always bald while outer still has 1 or 2/32's left.

 

I would question weather or not those rears may have been on the front but ist could be normal for a sn-95??? some sn-95 owners would know better

 

the tires never saw the front. ive only had them for about 3 months and there already in need of replacing(which i did). yeah i know too many burnouts but i cant help it. so the front would have nothing to do with the backs and this is normal?