Talk to a first or second generation Viper owner, front tires are a common F body gm size, rears are discontinued by almost all tire mfgs.
Last time I looked, only Michelin listed them and they were pricy!
Didn't want to hi-jack but I agree that at least considering more popular sizes might pay off in the long run, especially if buying wheels too!
My brother has the same issue with his C5 Z06 Vette. Goodyear and Michelin only. When he needed them, neither were in stock anywhere. He really preferred the Michelins, but the Goodyears became available in a small batch, so he went that route.
