So I have a chance to grab some momo corse wheels 18x7.5 for $200. Awesome looking wheels and decent for the price. Right now I have the 18's on my GT but looking for something other than stock. These have a 6 inch backspacing not sure what stock is either. But my main question is what size tire is best with these wheels? I have searched but haven't seen anything recent. What also is the max width you guys would go with tires and still be in that safe region?