Search new + high quality used tires online. Size 255 50 R20 starting at: $79.98. Tires in stock: 450. Available brands: 61 with 126 models. All season: 431. Winter: 16. Summer: 3.. 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!