Search new + high quality used 275 40 R18 Continental tires online, starting at: $104.98. 275 40R18 Continental models in stock: 4. All season: 1. Summer: 3. Run flat: 1. 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!