Well i just bought my black 05' srt6 last wednesday. love the car!!! I have had 73 cars so far, from 2 srt10 vipers, Z06, 2 TT supras, so just about one of everything. i have to say i am very happy with my new purchase. The rear michelin 255-35-19 tires were bald when i purchased it.

but back to the tires, i just bought some 275-30-19 kumho spt, i have to say the are the biggest pieces of **** i have ever driven on!! i just got them on yesterday afternoon. I do drive my cars aggressively, and almost wrecked it last night, after swerving and the rear tires have felt like jello, the rear slingshots from left to right! I have already did some burnouts and about 100 miles on them, and still the same. I am taking them back and getting some, probably PS2's. I hate to spend that much money, but in this case, you get what you pay for.

My 2 cents. btw i have tried different airpressure as well, i am at 40 right now cold. still sucks.