Search new + high quality used tires online. Size 235 40 R18 starting at: $47.99. Tires in stock: 197. Available brands: 32 with 95 models. All season: 106. Winter: 50. Summer: 41. Run flat: 4. 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!