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Originally Posted by Big Lar
I bought four tires. The rear ar 255 40ZR 17. Lasted 3900 miles. The front are good.Even wear on tires, just tread almost gone. Orignal changed at 31,750.With pilot sport factory N2's.Thougt might be alignment. My car is a 2003 Boxster with tiptron. No burnout actually is driven on smooth roads in S. Texas.Shocks good and air pressue was kept at 36 rear. Defective tires? or are these a softer tire and is normal. Someone help me. I replaced with same rear tires. :ah:
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you have a problem and that problem is toe. for comparison, i had a pair of pilot sports last nearly 5,000mi INCLUDING about six hours on a race track. rear tire wear on these cars is speedy, but 3,900 miles just doens't happen unless your toe is out or you take it to the track a LOT.
take the car to an alignment shop ASAP to fix this. you'll also be suprised at how much better the car will handle once it's lined up (especially in the rain). FYI, the design of the rear toe links is such that the eccentrics can actually turn if the lock nut is not thread-locked. this means that your toe settings can drift over time. since i take my car to the track a lot, i set the toe every three months. for a road car, i'd still do it at least every two years. it will save you a fortune in tires.