I did a search but could not get a definitive answer. I just got a set of Work Cr-Kai 18x9.5 38mm Iam gonna run a 15mm spacer in the front and none in the rear. What would be the biggest tire size that i could run with out rolling my fenders (will be getting them this summer)? I am lowered on a set of K-Sport Pro coilovers so if needed i can go back to the 4x4 look untill i get the fenders rolled. I wanna run a 265x35x18

 

Should have no problems. Although I think you would be better with a 5 or 10mm spacer max.