Bought a cpo car from mb West chester, pa and immediately noticed front tire(s) making thud sound that is more noticeable at 25-30 mps; although at higher speeds the thud sound continues. Dealer says tire treads are only worn 30%, but recommended new tires (which were supposed to be on the car!!). manufacturer says it sounds like a flat spot on the tire. I even paid for extra warranty and still dealer will not replace tire. Very concerned for safety based on posts of blow-outs, etc. It's amazing that truck tires have been replaced for the same reasons, but not car tires.

- Stow Creek, NJ, USA