Search new + high quality used tires online. Size 255 50 R20 starting at: $37.99. Tires in stock: 884. Available brands: 64 with 151 models. All season: 854. Winter: 20. Summer: 10.. 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!