im putting a new set of wheels on a 1996 fatboy 21 up front with 120/70/21 tire - rear 18 , i think i need a 130/70 /18 rear tire to make it sit level but i can find a tire with a 72 load range , any ideas ??? also can i get a 140 tire in there with stock fender and swing arm , plenty of those out there in the 72 load range ?