Search new + high quality used tires online. Size 285 50 R20 starting at: $73.96. Tires in stock: 47. Available brands: 19 with 29 models. All season: 40. Winter: 5. Summer: 2.. 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!