[Artmasterx]

If you don't do much driving at the limit, then it probably does not matter much either way. Maybe the ideal would be wide enough up front to have neutral steering and wide enough in back to make it hard to break loose. What those sizes are I don't know.

I am personally trying to find another set of rear 128i sport wheels/tires so that I can run 225 all around on 17x7.5" wheel and have the convenience of a symmetric set. It should also help the understeer which is probably bad with 205's up front (though I have not really had a chance to push it much yet... we will see how auto-x goes)