One tight corner would have pulled a flat standard tire off the rim, but the DriveGuard stayed put. We maneuvered a Toyota Camry equipped with them through a tricky course with a deflated front-left tire. But the DriveGuard has a taller profile that yields a better ride. That includes most new passenger cars since 2008, though the system can be retrofit on older cars.Įarlier generations of run-flats were too heavy, too noisy, and not durable. Run-flats should be installed only on cars that have a tire- pressure monitoring system (TPMS) that alerts the driver to a pressure decrease. Though the technology has been around since the 1980s, the Bridgestone Drive Guard is the first to really go mainstream-and at a price that's comparable to an equivalent touring-grade tire ($100 to $200). It's built with stiff sidewalls so that even when deflated it can support the car. Play icon The triangle icon that indicates to playĪ run-flat tire will run, uh, flat for 50 miles at 50 mph, enough to get you to a repair shop.
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