Goodyear Optitrac R-1W 650/65 R38 166D Goodyear Optitrac R-1W 650/65 R38 166D Goodyear Optitrac R-1W650/65 R38 166D Vehicle type: Special Usage: Farm Manufacturer: Goodyear Width: 650 Height: 65 Construction: R Diameter: 38 Load index: 166 Speed index: D Highest Price: