21" Used Tires for Sale. I only have what is listed. Mounting And Balancing available. Call if you want them. 2 - 255/40ZR21 Michelin Pilot Sport A/S 9/32" tread $100/pair 2 - 265/40R21 Pirelli Scorpion Zero 7/32" tread $80/pair 2 - 275/35ZR21 Michelin Pilot Sport 4S 8/32" tread $100/pair 2 - 275/45R21...