Search new + high quality used 315 35 R21 Pirelli tires online, starting at: $25.4. 315 35R21 Pirelli models in stock: 9. All season: 37. Winter: 3. Summer: 67. Run flat: 43. Selling all used tires at discount costs. All used tires go through 2 layers of inspection on specialized equipment. One year warranty + free shipping on all inventory ;) Happy shopping!