2nd71, The yellow car has 14X7 wheels all the way around. I don't remember the tire size at the moment but I got the largest tire I could get for the rear that would fit the wheel. The fronts are standard size for the car. I didn't do anything to lower it. It has all stock v8 suspension. The red car was a conversion from 6 to 8. It has 15X8 on the rear with I believe 255's and 15X6's on the front with I believe 205's. I left the 6cyl front springs in the front but the rear is all v8 stuff with the addition of air shocks.