#17623, "RE: What's the correct tire size for 18x8" In response to In response to 0
i have 18x7.5 with 235/40/18 tires. if you get 18x8, get 235/40/18..but you have to get teh right offset like +41,+40,+39 etc. i have a +42 on mine and i had to get 3mm spacers in teh rear so the tire would not hit the control arm. it was barely rubbing but a 40 offset should be just fine