[RotorDad]

SofaKing did you used to have a white 240sx & a member of Boostedimports? Ok back to the subject I'm not arguing without backing it up. I can name at least 9 tire shops in my area alone that will not stretch tires at all & the ones that will mount them will not warranty them. So because you and other do this that I guess is proof of what? Why is that when I look at most of the professional D1 cars it doesn't appear that they have overly stretched tires. Like I said above you all are right & the tire manufactures are wrong. BTW would you trust a product if the manufacture didn't know what they were doing? Avoiding potholes & road debris is not a clear cut as you make it seem. On my way to work there are numerous potholes & can be hard to avoid if you didn't regularly drive that route. I would think that your first post would be some sort of intro not jump in to an argument. You say the members here aren't backing their argument, but your only backing is that you use this type of set on the track. Who ever said that the others here didn't have track experience. Hey if you provide real data from a professional (same car non stretched vs. stretched) & can find me a tire company that would suggest tire stretching I will with no problem apologize & admit being wrong.