What makes Treadwell® different from other online tire-buying guides? ✅ Real-life tire testing. Treadwell® has tested more than 700 different types of tire models over the past decade, including an industry-first measurement of worn tire wet-stopping performance and energy efficiency never before conveyed to consumers on a broad scale. ✅ Millions of data points. Tire life mileage estimates are based on millions of tread depth measurements collected from customer-driven vehicles. ✅ Same expert ad