[Marv S]

If the C1 label is available in the size you need it's the best Michelin choice for you. Second choice is get the newest model - now the PS2 - that is available.

There won't be any 335*17 size or 335*18 size that carries a C1 label. Like Luke said, they just are not going to develop specific label tires for a 10 year old car.

The important thing to recognize is that Michelin is making (for lack of a better word - generic) modern tire in those old Viper Sizes. That's what's most important.

It might take Eric to demonstrate it, but a 335*18 PS2 - no C1 tag- will perform better than an original Pilot Sport- even one with a C1 tag-. On an antocross any PS2 is better than a C1 PS1 or runflat model.