Zero-pressure tire: zero-pressure tire is also known as the safety tire run-flat tire, also known as the "blowout tire" , the industry literally translated as "air-tight protective tires.
Compared with a normal tire, a zero-pressure tire will not leak or leak very slowly after being pricked, will keep the running profile, and the tire rim can be fixed all the time, thus ensure that the car can be a long time or temporary stable driving to repair stations. As a result, cars with such tires no longer need to carry spare tires, so the spare tire in another way invisible hidden in the four tires.
