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Car tire puncture is a problem that has been with drivers for a long time and they have often faced this problem, which can also cause many risks for you and your car while driving. Get a spare tire or call the car service so that they will come to you after a long delay and change your tire, but there is also a third way, which is to use Ranflat tires. Using tires that burst or puncture at any speed, in addition to maintaining the balance and safety of the car, allows you to drive at a maximum speed of 80 km per hour for a distance of about 160 km to reach the nearest repair shop or home without stopping. Continue on your way. Every day, tire manufacturers test and introduce new products to the market in order to overtake other competitors. One of the newest products is the production of run-flat tires. The history of run flat tires goes back to the 1980s, in recent years, the term run flat tires has been heard a lot in the automotive world, although these tires are not very new, but they entered the Iranian market late and are considered relatively new, mostly on luxury cars and They can be seen in military equipment, even in some Persian equivalent sources, flat tires were invented and called puncture tires. Ranflat tires have a tire collar that stays connected to the flange ring even when there is a flat tire. This means you won’t run the risk of the tire coming off or damaging the wheel itself. This tire can maintain more or less its original shape for a while despite the puncture. In the case of military vehicles, this issue can be very critical and save the lives of the occupants of the vehicle until they reach a safe point. Since Ranflat tires have reinforced sidewalls, their special design prevents the tire from separating from the rim. Thanks to these features, you don’t need to carry a spare tire for emergency use as the sidewall is reinforced to allow the tires to function even in the event of a puncture. This thick wall has the ability to cover any damage inside the tire. During a puncture, the tire pressure drops drastically, run-flat tires have the ability to carry a significant load and withstand irreparable damage. In the event that your tire is punctured, the performance of Ranflat is designed in such a way that you have an auxiliary support system and a support ring connected to the wheel, which provides the necessary support to continue the journey when the tire pressure drops.

Today, most of the luxury car manufacturers in the world, including BMW, Benz, etc., use this type of tires for their cars so that other drivers don’t have to worry about getting a flat tire and stopping on the side of highways and busy and dangerous roads.

Ronflat tires are mainly divided into three groups:

Self-supported tires
• Self-repair tires
Auxiliary supported tires

– In the first type or self-supporting, the sidewalls of the tire are reinforced to have higher strength. This higher strength makes the tire not sleep too much even when the air is empty and the car maintains its ability to move with limitations.

– In the second type or self-healing tires, the tires have an inner liner that reacts immediately if a small hole is created in the tire. The way this system works is similar to anti-puncture sprays. Self-healing tires are not very common and are only produced in limited sizes.

– In the third type, which is called auxiliary tires, a ring inside the tire is used. This ring is usually made of very strong plastic, but other materials may also be used in its construction. If the tire is deflated, this ring gives enough strength to the tire wall and supports it.

Since run-flat tires also move when deflated, the driver may not notice a flat tire. For this reason, a tire pressure warning system (TPMS) must be installed in cars equipped with this tire to show the driver any change in tire pressure.

Among the benefits of Ranfelt lasitics, the following can be mentioned

• Driving in flat condition (no wind): Undoubtedly, this is the first and most important strength of a flat tire compared to a normal tire. In any case, the run flat tire will take you at least to the place where you can change the car tire without any wind. The only thing that the driver should pay attention to is the maximum speed of the car. This maximum permissible speed in the absence of wind is usually written in the user manual of the car.

• Higher stability in the event of a flat tire: Since the flat tires have stronger walls to move in the flat condition, so if the tire bursts, there is less impact on the stability of the car and the car will still be steerable. The controllability of these tires in flat condition is no different from the normal condition, and this is a very important positive point in terms of road safety.

• Car weight reduction: If a car is equipped with run-flat tires, there is no need for a spare tire anymore, and this means that an extra load is removed from the car. The effect of this extra load, which is not small by the way, can be seen on the car’s fuel consumption.