17x7 rim: widest tire size
 

i am thinking about getting a new set of rims.
not going to be lowering the car.

i was interested in some mini cooper rims that are 17x7

the guy selling them has on 205/40/17

what is the widest i can get away without it sticking too far out on the fit?

215? 225?

also, would 45 be better than the 40?