Search new + high quality used tires online. Size 235 40 R20 starting at: $152.99. Tires in stock: 11. Available brands: 3 with 4 models. All season: 3. Summer: 8.. 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!