The OEM RX-8 Wheels are 18x8 with a +50 offset. They have a 5x114.3 bolt pattern.
I think OEM CX-7 Wheels are 18x7.5 with a +50 offset. They also have a 5x114.3 bolt pattern.
So the RX-8 Wheels would be a little wider.
Unfortunately, I do not know that for certain as I did not attempt to mount these. However, based upon my inspection, that is a good assumption. I did take it to a wheel repair shop in Indianapolis and they said they could fix it.
Updated Pricing:
I have 4 RX8 wheels for sale. I purchased these about a month ago but have never mounted them. Wheel 1 has some damage (pictured). I had a local wheel repair shop say they can fix it. Wheel 2 has some minor damage (pictured). Wheels 3 and 4 are in decent shape with no...
(beer)
I'm there...Fantasy football draft and soccer tomorrow night, so I'm free tonight. Although the MS3 is bug caked now after a great cleaning on Sunday.