I have them on my Viper on 13" wide rims. I think that the 335's are too narrow for a 13" rim. When you lay the Wheel flat on the ground, the rim touches (instead of the tire curvature). The shape and profile will make a difference on how it fits in your wheel well.
I have seen 335's on several ZR-1's running an 11in. wheel. It does look good, however, I have seen a couple setups where the tire seems to bow a little bit. A 12in. rim is the way to go (from what I hear) but I have also never heard of anyone having any problems with the 335's on 11in wheels. If it's just for cruising I don't see how they would be a problem but you might not want to do it if you roadrace your Vette.
I know that Michelin makes a 345 on the Pilot Sports, but they are just too hard a compound for me. I really like the break-away characteristics of the MXX3's (for street and the road course). Kumho also makeas a DOT legal racing tire called the V.700 Ecsta. They call the tire a 335, but it is actually closer to a 355. Unfortunately, not a good tire for a daily use car like mine.