Our wheels are 17x8 and I'm not sure an 18" tire with 40 series sidewalls will fit. We were running 225/50x16 last year and this year we went to the 17x8 and they REALLY fill up the extra space in there. I think with an 18 inch wheel and 40 series side wall, there will be too much tire diameter, i think width will be ok. Maybe look for a 30 series sidewall if possible?(don't even know if they exist!) |