顾名思义，跑步轮胎能够支撑没有空气的车辆的重量。这可以保护车辆的轮辋，并使轮胎的维修变得更加容易。放气的跑步轮胎仍然可以将驾驶员带回家，也可以到达可以交换车轮的安全地方。跑步轮胎在放气后平均可以持续100英里，并且建议一旦空气开始离开轮胎，车辆将保持在50英里 /小时的速度。

是什么使它成为可能？

自1930年代以来，就已经进行了轮胎的想法，即使在穿刺发生后也可以发挥作用。有几种方法可以实现这一目标，每种方法的优点和缺点：

• Structured tires with thicker sidewalls to hold the weight of the vehicle.

  • Pro: Easy to replace if damaged. Cost-effective alternative to spare wheel.
    
  • Con: Useless if sidewall damage caused the deflation. Negatively affect vehicle handling.

• 轮胎下方的车轮上的材料将支撑车辆的重量。

  • Pro: Stronger and vehicle can travel at a higher speed using this type. Can be placed inside a regular tire.
    
  • Con: Doesn’t work well with small wheels or low-profile tires.

• 在穿刺的情况下，会使有限量的空气发出的自密封轮胎。

  • Pro: Cheaper than structured run-flat tires and more effective at not getting punctured than regular tires. Perform more like a normal tire.
  • Con: Reacts like a normal tire to large punctures or serious tire damage. Does no good if there is no air at all left in the tire.

What Applications Do They Have?

Armored cars and Military vehicles。Heavy-duty armored cars for both civilian and government use implement run-flat tires. Military vehicles also use run-flat wheels for operating in areas where changing a blown tire would be dangerous. For this application, the type of run-flat tire used is almost always the second type with added material attached to the wheel itself.

Vehicles with no spare tire。Many modern cars come from the factory with no spare tire at all and have stock run-flat tires. These almost always use the type of run-flats where the tire itself supports the weight of the vehicle in the event of a puncture.

Vehicles in areas where a puncture is likely or road sides are ill-equipped for wheel changing。居住在非常岩石的道路上或几乎没有余地的地方（例如在山区）可以从这项技术中受益匪浅的人们。自密封轮胎和结构化轮胎是为此目的的通常选择，因为它们可以安装在任何车辆中，也可以在没有任何特殊设备的情况下安装。

How Useful Are Run-Flat Tires to the Average Driver?

尽管对于大多数路上的大多数人来说，跑步式轮胎并不是必需的，但它们当然可以是一个非常方便的功能。因此，许多车辆来自工厂，出于这种原因。制造商认为，无需在道路侧面更换轮子的需求使客户更安全。对于通勤者来说，除了增加成本外，跑步轮胎没有明显的缺点。

Sports car drivers and anyone with an enthusiastic right foot may want to steer clear of Run-Flat tires as they do perform worse than normal tires on a track. Run-Flats weigh more and have an unusually stiff sidewall. Weekend warriors can very easily switch their Run-Flats with slick racing tires at the track, making them viable even to that type of consumer.