Search new + high quality used tires online. Size 235 40 R18 starting at: $65.88. Tires in stock: 377. Available brands: 43 with 109 models. All season: 318. Winter: 26. Summer: 33. 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!