M3 wheel choices

[Sully]

Yea you gotta remember though that they are usually upgrading tire size to increase overall size with some very heavy tires. Like joey said, when adding a larger wheel to a car, you usually go lower prfile tires and changing one inch would probably not affect a gearing that much anyways even you were going bigger overall.
Stock trucks and suvs come with sizes ranging from 29 to 31 and wranglers are at the lower end for off the shelf ones and the jeep performance packaged jeeps have gears to handle the tires. So to answer your question, technically no if you do it right as joey said since you will run lower profile tires but yes finishing with an overall bigger diameter will result in gearing issues. Dramatic changes that is. Like my truck came with 31's and now has 37's so it lost some power to the ground but changing a 29 to a 30 will not have as great of a negative impact.

hi-jacked my own thread
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