Well here it is guys. This deserves to be here in hopes to save several some heartaches with wheel fitments and questions. It's late and I'm gonna do the short version.

17"

Low offset Fitment
8 and 9 +35 will work 225/45 255/40

Standard Fitment
8.5 and 9.5 +40 235/45 and 265/40

Common Symmetrical
8.5 F/R +40 245/40

Sleeper Fitment - MAnny Lozano
9.0 F/R +45 255/40/17,

Max Symmetrical
9.5 F/R +50 265/40/17

18"

Follow rules above while subtracting 5 from the aspect ratio/profile

However, there are some proprietary fitments for this diameter.

Johnny Fitment
18,9 and 10 +50 255/35/18 and 285/30/18

SSR Competition Fitment - Mike was first I saw with this, running V700
18,9.5 +50 front and rear, 265/35 or 285/30 all around.

Cooper Fitment
18,10 F/R +50-+52 285/30/18

Now these fitments have another variable to consider and that's tire selection. Each model may have a different section width regardless of what their sidewall may read. Also rim protectors are a commonly left out variable to take into consideration to avoid rubbing.

Alright guys. To all a good night. Please do email or call if you have any questions. This info is the easy part. The hard part is spending as little time as possible to find the wheels which follow these guidelines and your functions. That's where we can help. Should you be interested in some wheels or questions about fitment vs. function please email. I'd be glad to help. We have an array of wheels available in these fitments. Most in the upper range, but that's where we like to keep it. Don't forget about the club discount. If you're not registered and just a reader please do register. It will entitle you to a lot of savings. If you don't own a rotary that's fine. We take care of people who show interest in our "raring commodities" and like learning about our cars. lol.

Laters,
Rishie