Goodyear Optitrac R-1W 420/85 R30 145D Goodyear Optitrac R-1W 420/85 R30 145D Goodyear Optitrac R-1W420/85 R30 145D Vehicle type: Special Usage: Farm Manufacturer: Goodyear Width: 420 Height: 85 Construction: R Diameter: 30 Load index: 145 Speed index: D Highest Price: