I had an obviously defective tire, as inspected by 2 other tire stores.Discount Tire, where I bought it orginally, said I had a mechanical problem.
The sidewall of the tire had separated, as can only be seen from the dis-mounted tire, inside view, had a loud 'thump' while driving and an obvious 'cup' wear pattern on a section. I had the suspension checked out and the mechanic said the problem was the tire. This was an additional $74 with no fix. I replaced the tire with Walmart for $50 less than DT.
Avoid these guys and their minimum wage 'experts'.
A $150 tire from DT acutally cost me $339 by the time it was corrected.