Search new + high quality used 255 40 R20 Michelin tires online, starting at: $68.95. 255 40R20 Michelin models in stock: 15. All season: 22. Winter: 15. Summer: 21. Run flat: 6. 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!