Search new + high quality used 225 50 R18 Bridgestone tires online, starting at: $37.16. 225 50R18 Bridgestone models in stock: 25. All season: 118. Winter: 29. Summer: 54. Run flat: 110. 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!