Search new + high quality used tires online. Size 255 50 R20 starting at: $31.53. Tires in stock: 758. Available brands: 66 with 153 models. All season: 727. Winter: 20. Summer: 11.. 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!