Search new + high quality used tires online. Size 235 55 ZR18 starting at: $38.35. Tires in stock: 54. Available brands: 18 with 24 models. All season: 50. Summer: 4.. 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!