Search new + high quality used tires online. Size 285 50 R20 starting at: $57.77. Tires in stock: 53. Available brands: 15 with 25 models. All season: 45. Winter: 8.. 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!