Search new + high quality used tires online. Size 275 50 ZR20 starting at: $57.95. Tires in stock: 23. Available brands: 7 with 7 models. All season: 15. Summer: 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!