I was wondering what the wheel sizes on my stock 2007 mazda 3 2.3 automatic hatchback?17x7 17x7.5 or 17x8.....i have some tenzo concept 9s on the car now and they are 17x17.5....i have decided not to get 18 inch wheels because virgin and a bunch of ppl talked me out of it...so now i would just like to know the pros or cons or differences between the 17x7.5s and the 17x8s...please and thankyou for your help.