Right now I have 325 60 18 terra grapplers on helo maxx 6 18x9 with -12 back spacing. In a couple of months I would like to go to the 325 65 18 grapplers. I'm affraid with the current rims I have I will have rubbing issues. Will I need a different offset to accomidate a 35" tire. I have the spindle lift with the leveling kit, so it's about 6" taller up front.