[checkeredflag]

Got a pair of rear 305/25/20 Michelin pilot super sport tires-new dirt cheap
want to try them paired up with front 285/30ZR20 Goodyear F1 Supercar 3 that I picked up from a fourm member Stock oem zl1 rims all around. My ? is what will the lower profile rears do to the handling of the car for autox? 1.2" difference in diameter

[kropscamaro16]

id be more concerned with mixing tire brands than the size but a 25 sidewall is tiny lol

[TrackClub]

Firstly, what Krops said. You will have less grip at the rear as G3s are more aggressive compound. But proly more importantly, you may actually reverse a proper rake angle F vs R. What this will create is a large amount of understeer. And at faster pace, it will affect aero balance and will create F end lift. Not desirable under any scenario imo. You should be able to get away with it at autox, but even there the handling will very likely suck big time.

[checkeredflag]

If I went to a 285/25/20 front to match rear Michelin, it would bring the front back down but small sidewall all around then. tires were $50 each, it was a deal I could not refuse. Thanks for the input guys.