Search new + high quality used tires online. Size 305 40 R20 starting at: $68.4. Tires in stock: 26. Available brands: 5 with 7 models. All season: 21. Winter: 1. Summer: 4. Run flat: 2. 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!