Search new + high quality used tires online. Size 305 40 R20 starting at: $52.99. Tires in stock: 12. Available brands: 5 with 8 models. All season: 7. Winter: 2. Summer: 3. Run flat: 1. 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!