Search new + high quality used 225 45 R18 Continental tires online, starting at: $47.99. 225 45R18 Continental models in stock: 15. All season: 10. Winter: 3. Summer: 8. 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!