I have read several threads about maximum tire size that will fit on a stock KJ without rubbing. I don't want to go up to a 245 width, but possibly up from a 70 to 75 sidewall height. Anyone done the switch? I know it throws the speedo by a couple percent, but that really doesn't bother me. I used a tire size calculator to find out how much larger it would be and the diameter of the tire increases by 0.9", which certainly seems like it would fit fine. Feedback?