Search new + high quality used tires online. Size 275 45 R21 starting at: $47.99. Tires in stock: 267. Available brands: 9 with 33 models. All season: 212. Winter: 16. Summer: 39.. 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!