Search new + high quality used 255 50 R20 Bridgestone tires online, starting at: $44.59. 255 50R20 Bridgestone models in stock: 8. All season: 36. Winter: 17. Summer: 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!