this subject has been done to death
if you are going for well fitting rims with the 32 you should be able to fit 8 inches in the front and 9 in the back without any guard work with offset in the low 30's to high 20's.
if you are a super hellaflush hard parking drifter like me you can fit 10's in the front and the back, but this will require you to roll your guards.
also it's not very practical as you will have stretched rubber