Flat but not flat out.

Somewhere some time as you are driving, you will likely encounter a flat tyre. When that happens, the options are to change the flat tyre yourself or call for roadside assistance.

Unless you have run flat tyres.

Introduced in the 1980s, run flat tyres have become popular in recent years. They are available as standard or optional equipment on a wide range of vehicles, and commonly used by luxury car brands. BMW, for example, has been using run flat tyres as standard equipment on most of its models for the longest time.

How then do run flat tyres benefit you?

What are run flat tyres?

Run flat tyres are a type of tyre that can continue to be driven on even after they have lost air pressure. This is different from traditional tyres, which will quickly become flat and require a replacement or repair. Run flat tyres are designed to provide drivers with an extra layer of safety and convenience in the event of a flat tyre.

How do run flat tyres work?

There are several different types of run flat tyres. Most use reinforced and heat-resistant sidewalls or a special internal support structure that allows the tyre to support the weight of the vehicle even when there is low or no air pressure.

When a run flat tyre loses air pressure, it will deform slightly. This is where the reinforced sidewalls come in to hold the weight of the car, allowing the driver to continue driving at reduced speeds for a limited distance.

Run flat tyres work with interconnected technologies like tyre pressure monitoring systems to detect the loss of pressure.

How far can a flat run flat tyre go?

You can usually continue to drive with a flat run flat tyre for around 80km with a moderate load, and at a speed of 80km/h or less. This should be sufficient time for you to get to a mechanic or to stop at a safe location.

The exact distance will vary depending on factors such as the type and condition of the run flat tyre, and the vehicle load.

Why do you need run flat tyres?

Run flat tyres provide additional safety for drivers. When a normal tyre gets punctured, it quickly loses air pressure. The sudden tyre failure can increase the risk of accidents.

Run flat technology, on the other hand, keeps the vehicle directionally stable so you don’t have to worry about loss of control of the steering or brakes. It allows you to continue driving up to 80km and at up to 80km/h after a puncture. This gives the driver enough time to drive to a workshop or a safer area away from traffic.

BMW cars with original run flat tyres ensure that safety features such as Dynamic Stability Control (DSC) and Anti-Lock Braking Systems (ABS) remain fully functional.

Run flat tyres also eliminates the need to carry a spare tyre or car jack which can free up valuable storage space in the vehicle.

Are run flat tyres worth it?

There are some downsides. Run flat tyres tend to be more expensive than normal tyres because of their reinforced sidewalls and specialised design. As they cannot be repaired if they become damaged, run flat tyres must be replaced completely. Additionally, because run flat tyres are designed to support the weight of the vehicle even without air pressure, they tend to be stiffer and provide a slightly harsher ride.

That said, when there is a puncture or sudden loss of tyre pressure, run flat tyres offer better stability, help you avoid being stranded or having to change a tyre in bad or unsafe conditions. With drivers and carmakers putting a priority on safety features, run flat tyres are expected to become even more popular.

Speak to our consultants at Performance Motors Ltd to find out how you can enjoy greater control and a safe ride with Original BMW Tyres.