I'm planning on purchasing a set of these SportMax 962 wheels. They are 18x8.5 and 18x9.5 with a 35mm offset. The offset isn't optimum, but the spokes are pretty "flat" and leave a lot of lip:

I've done the math, and the front wheels will run .05'' wider than stock in front, and .55'' wider than stock in the back.

Any advice/issues before I buy these? + Can I run a 245/40/18 stock tire on the fronts (18x8.5'')

-Brian

 

Let these tools help you decide

Offset Calculator
http://marksink.com/tire_wheel_offset/offset.html

Tire Size Calculator
http://www.miata.net/garage/tirecalc.html