Search new + high quality used tires online. Size 235 40 R18 starting at: $43.98. Tires in stock: 334. Available brands: 55 with 136 models. All season: 230. Winter: 29. Summer: 75. Run flat: 18. 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!