Well, talked with Sears today. They when out and measured tire depth. 4/32 on all treads on front; 3/32 on outside edges of back; others 4/32. Conti says must be mechanical problem with tread wearing differently on outside edges. No warranty. Pretty much like everyone said. I didn't expect any different answer either. I just ordered a set from Tire Rack. Anything in the same price range with better wear? I saw the Avon's listed as lower priced. The Avon isn't listed as an All Season tire however.