Search new + high quality used tires online. Size 235 40 R18 starting at: $105.96. Tires in stock: 64. Available brands: 16 with 35 models. All season: 43. Winter: 13. Summer: 8. Run flat: 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!