I bought a 2005 Cooper S The rear tires were very noisy due to the wear on the inside of the tires. I bought 4 news tires. The previous owner had 205/45/17 on the rear, and 205/40/17 on the front.
Question: Would the different tire sizes cause the rear tires to wear differently.
I was told by the tire guy that the reason the tires were cupping is that the rear shocks needed to be replaced. The car has 64000 mile on her.

 

have you ever check tire pressure?

 

I was told mine were cupping because I lowered about and inch and that the lower control arms I put on the back were not being adjusted correctly any comments on this ?

 

so yes it could be from a bad susepsion part. but i have never experienced this and i have driven cars with blown shocks before for very long periods of time.

http://www.procarcare.com/includes/c...dtirewear.html

Cups or scalloped dips appearing around the edge of the tread on one side or the other, almost always indicate worn (sometimes bent) suspension parts. Adjustment of wheel alignment alone will seldom cure the problem. Any worn component that connects the wheel to the car (ball joint, wheel bearing, shock absorber, springs, bushings, etc.) can cause this condition. Worn components should be replaced with new ones. The worn tire should be balanced and possibly moved to a different location on the car. Occasionally, wheels that are out of balance will wear like this, but wheel imbalance usually shows up as bald spots between the outside edges and center of the tread.