Firestone R 9000 RC 320/90 R50 148B Firestone R 9000 RC 320/90 R50 148B Firestone R 9000 RC320/90 R50 148B Vehicle type: Special Usage: Farm tire Manufacturer: Firestone Width: 320 Height: 90 Construction: R Diameter: 50 Load index: 148 Speed index: B Highest Price: