Search new + high quality used tires online. Size 235 45 R20 starting at: $51.4. Tires in stock: 102. Available brands: 9 with 21 models. All season: 73. Winter: 5. Summer: 24.. 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!