Jeff, Just made a couple measurements on the 3600 flatbed stake. It appears that the tread (center to center of tire)width in front is just a bit narrower than rear. Front is near 57 1/2", rear 62 1/2", this is kneeling down on one knee with dog licking my ear so may be off a tad. Also wheel base is 125". 8 lug rims, I believe are original 15" split rims.
