Goodyear Optitrac R-1W 420/85 R28 139D Goodyear Optitrac R-1W 420/85 R28 139D Goodyear Optitrac R-1W420/85 R28 139D Vehicle type: Special Usage: Farm Manufacturer: Goodyear Width: 420 Height: 85 Construction: R Diameter: 28 Load index: 139 Speed index: D Highest Price: