I have gone thru all 6 towmax tires on my Raptor in 1 1/2 years . I check them before i leave each time i go on the road and so far have been lucky and found bad tires before they found me. My neighbor didn't beleave me and found out the hard way when one of his blew up and remodeled the side of his trailer. I want to upgrade to Goodyear G14 or some other rib tire but they are all 235 85 which is 1" larger than my 235 80 and don't have the space between the tires for clearance . I was told by someone that the Goodyear G14 235 85 is the same size inflated as the Towmax 235 80 !!!! Does anyone know the true diameter of an infalated Goodyer G14 235 85 tire ???