Our grandparents would agree that they're a modern miracle: tires that keep on turning even when they're flat. But how exactly does a run flat tire work?

A run-flat tire will run, uh, flat for 50 miles at 50 mph, enough to get you to a repair shop. It's built with stiff sidewalls so that even when deflated it can support the car.

Auxiliary-supported run flats contain a ring of rubber or a similar material on the interior of the tire, which picks up the slack of the deflated outer tire. This type of run flat is usually ...

But while run-flats have seemed like the way of the future for a while now -- the Porsche 959 wore a special set of the tires in 1987, ... When a DriveGuard tire is deflated, ...

Run-flat tires have been available on high-end vehicles like Corvettes since the mid-90s, but they have become increasingly common on various vehicle makes and models in the last few years.

Bridgestone is a leader in run-flat tire technology. Porsche chose the company in the mid-1980s to develop a special run-flat for its 200-mph 959 supercar, and they have been innovating ever since.

The main drawbacks are a stiffer ride, higher replacement cost, and driving on a deflated run-flat in most cases requires subsequent tire replacement. Skip to Main Content Open Close Menu ...

Run-flat tires are designed to help avoid the danger of a flat tire while not needing ... Factors such as whether the tire deflated completely and how far and fast it was driven on will all be ...

The Porsche 959 initiated the modern run-flat era. Its Bridgestone RE71 road tires featured Dunlop's Denloc bead profile and were constructed to retain their integrity in the event of a high-speed ...

A leader in run-flat tire technology and an original-equipment supplier to automakers, Bridgestone is now turning its attention to the replacement market with a new run-flat called DriveGuard, an ...

Our grandparents would agree that they're a modern miracle: tires that keep on turning even when they're flat. But how exactly does a run flat tire work?