Want anyone opinion. I just bought a set of enkei rz-5 from wheelsnext.com. The wheels are awsome. I went with a 16 inch with a 205/45/16 toyo fz4 tire. My ride is droped with gf20's and the ride is great with barly any rubbing, except for hard bumps. Would i have been better going with a 17 inch with a 205/40/17 tire. Would the diameter be the same since it is a lower profile. I am considering selling and getting the 17 inches. The offset on both of the wheels is 42...i need to know what i should do!!!!!!!
I will post some pics sooon!

 

do the numbers. that should tell you pretty close to what it'd be.

 

First of all, everybody should put this in their favorites Wheel / tire size calculator / comparer - RIMS-N-TIRES.

But to answer your question, they are very close in size. The 205/40x17 is 6mm bigger in diameter. If you really want 17", then do it, I'm happy I did.