I currently have Dunlop SP Sport FM901 215/35 on my rear 18x8.5 wheels.

The reason that i have the 215's on there is because i used to be on air and with the rear all the way down, having these tires with a slight stretch would eliminate rubbing or having the fender cut into my tires:


So what would be a good tire size to run?


My current rear tires (over 25k miles on these):