Search new + high quality used 225 50 R18 Bridgestone tires online, starting at: $47.99. 225 50R18 Bridgestone models in stock: 24. All season: 64. Winter: 11. Summer: 44. Run flat: 50. 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!