Originally Posted by tiltmode43

The breakdown is as such:


18 x 8.5JJ
Flat Face: +43 +37 +30
Semi Concave: +38 +32 +25

18 x 9.5JJ
Deep Concave: +38 +30 +20 +12

Concave is typically what makes some wheels look *prettier* than others. The curvature you see in the wheel is considered the concave.

This car shows the flat faced wheels (18x8.5 +43) up front with concave wheels (18x9.5 +38) in back. Note the subtle yet substantial difference!



Your 245/40's will fit without any issues (slight stretch) but this will allow you to go with wider tires later down the line. (255/35 front & 265/35 rear has been done with a 18x9.5 +38 wheel on stock fenders, with no rubbing) I personally would recommend, both for performance and aesthetics, 18x9.5 +38! You may have some rubbing if you go with tires too wide later down the road but that is if you go with an extreme width.

Save yourself the time and purchase rims now that you will enjoy more later down the line!

PM some vendors, they may be able to meet you around $1600 or so for a new set of these...