Search new + high quality used 275 40 R18 Michelin tires online, starting at: $86.25. 275 40R18 Michelin models in stock: 5. All season: 7. Summer: 3. Run flat: 7. 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!