Search new + high quality used tires online. Size 235 40 R18 starting at: $47.99. Tires in stock: 215. Available brands: 41 with 113 models. All season: 117. Winter: 48. Summer: 50. Run flat: 5. 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!