Trying to get height top of tire to road surface....thought someone may have set one up so I could get a general idea. Apparently when resetting OEM computer it's a number that is asked for. Trying to get a harness done and was asked for ratio and height of tires. Not that far along, have ratio but no firm decision on wheels/tires yet. I figured at least 17 inch wheels but no idea on tire size. Seems BowTie overdrive use to give you a number of that height if you knew wheel/tire size.