I recently purchased a set of Interco swamp lite tires for my 2016 rubicon deluxe. The original tires were 25x8x12 (F) and 25x10x12 (R). The new tires are 27x10x12 (F) and 27x12x12 (R) and mounted to the original rims. When on a level garage floor the front tires are higher than the back roughly 1". Not sure why the difference? Any insight greatly appreciated.