Search new + high quality used tires online. Size 235 40 R18 starting at: $48.82. Tires in stock: 124. Available brands: 34 with 72 models. All season: 86. Winter: 10. Summer: 28. Run flat: 12. 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!