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You're buying a car from LOTUS, not Toyota, Ford, etc. You must keep this in mind. There are very few car companies out there that are so dedicated to making a car HANDLE. If larger diameter wheels made a better Elise, then it would have them. I think it'll be difficult, maybe impossible, to improve performance over what Lotus offers. Their two variants - the street version and track version - will be highly optimized for those environments.