hey all im new here and i was wondering what tire size i should go with on a 18 (not facorty wheels). i herd that 245/40/18 was the biggest i can go on the front. the reason im asking about the front is because i want to try to keep all her shoes the same size so that i can still rotate them. but i still want a good size tire on the rear without rolling the fenders.:confused thanks for any help.