Bot a M35A2 but didn't look closely enough at the tires. 14.5 R 20's dated 1996 they are in somewhat bad condition. Had one split and go flat which quickly told me time to upgrade. Did not realize how hard it is to find 14.5's or 365 R 80's so thinking about going to 365/85 R 20's. Will this work? Concerned about rear tire clearance. Any/all help appreciated!