Search new + high quality used tires online. Size 275 40 ZR18 starting at: $42.46. Tires in stock: 31. Available brands: 10 with 18 models. All season: 7. Summer: 24. Run flat: 6. 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!