I've been browsing on and off for a while on new wheels for my RX-8, doing research across the boards and different retailers and manufacturers websites. I found a style I like and they seem like they will fit the RX-8 (even though I'm not sure about the TPMS yet).
What I'm looking at is the RS Limited Ikari (Athracite). It's 18 x 7.5, 40 mm offset, and bolt pattern is 5X100/114.5 (which looking at the image it can be either 100mm or 114.3 mm diameter<Please correct me if I'm mistaken>).
I went out to Wheel Offset Calculator and ran the numbers, with a result of
Which to me sounds like it will fit with no problems. But with those differences would there be any type of change in the handleing of the RX-8 on daily bland/normal driving conditions (i.e. no drag racing , drifiting, or general racing type conditions)? And if so what would those changes be?
I ask this because of the offset information on Tirerack.com, and their comments of the proper offset matching for handling reasons. http://www.tirerack.com/wheels/tech/offset.htm

The if anyone knows of another wheel with a simlar pattern but closer measurments to stock, the let me know.
Thank you

 

The only feedback I have would be that you might what to go with a +37 or +35 offset if you're going with a 7.5" width wheel, front and rear. It'll give the car a more "flush" look and feel.

Oh, you might want to try Enkei's RPFI, which has a similar look n' feel.

 

Thank you for the suggestion, sociopath. The RPFI are nice in design but I don't see one in the gunmetal / athracite. But the ZR-1-Hyper Black or RSV-Anthracite by the same company are quite nice though.