I am trying to find out what is biggest 22" tire I can get under my 08 AWD. I most of you have lowered your HD but since mine is in all reality a 4x4 I want to go the other direction with a 2.5 leveling kit and A/T tires on it.I know the factory tires are about 31" tall and there is a lot of room to fit more.I just do not know the sizes and what they equal in inches. Any help would be appreciated...