Search new + high quality used tires online. Size 255 50 R20 starting at: $33.07. Tires in stock: 26. Available brands: 16 with 21 models. All season: 23. Winter: 2. Summer: 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!