Run Flat Tyres

A flat tyre frequently occurs at the most inconvenient time or location. Most individuals will phone for help, but they will likely have to wait 45 minutes at least. If you understand how to replace a spare tyre, it’s a nasty job that you’re probably not prepared for. Worse, your automobile may not have a spare tyre, and you may not be familiar with how to utilise the tyre repair kit.

The run-flat tyre is here to save the day. Run-flat and zero-pressure tyres can support a car’s mass for a short period of time, giving the motorist approximately 100 miles of range to locate a service center. While it may appear to be the ideal answer, car buyers and drivers should be aware of the trade-offs.

Self-Supporting Tyre 

The self-supporting tyre is the most prevalent form of run-flat equipment in use today. The sidewalls of the tyre are extensively reinforced to sustain the car whenever the air pressure is inadequate or the tyre has completely lost its air.


You can operate on a flat tyre in the following situations: The main advantage of a self-supporting Run Flat Tyres Fareham is that it enables you to drive on a flat tyre for up to 100 miles after the pressure has been completely depleted. You don’t want to get out of your vehicle in the storm or the cold, or onto a busy road or a scary neighbourhood street. To gain the greatest range, drivers must normally drop their speed to around 50 mph. Each tyre application will have precise data in the owner’s manual.

Because this tyre can support the car for miles without air, a fast deflation leads to reduced weight distribution and tread destabilisation after a rupture. The steering and control will be as close to normal as possible.

  • Reduced vehicle weight: Without the spare wheel and tyre repair equipment, the vehicle’s mass should be reduced. However, because run-flats weigh more than standard tyres due to the increased sidewall strengthening, it won’t be as much as you could assume.
  • No spare: Cars with run-flat tyres don’t use a spare wheel or tyre, which means they also don’t own a jack or equipment. Indeed, removing the spare tyre and repurposing the space for anything else is one of the main reasons why car manufacturers offer run-flat tyres.

 Blowouts can still happen if a driver avoids or ignores the alerts and goes beyond the zero-pressure region or beyond the legal limit, causing the tyre to break down and cause the same destabilising effects. The motorist will also need to summon a tow truck if the rupture is on the sidewall or if the tyre collides with a heavy item.

It’s difficult to know if there’s a shortage of air: When the air pressure is too low, the sidewalls do not protrude as a result of the stiffer design. As a result, having a tyre pressure monitoring system and checking your tyre pressure on a regular basis is vital. You’ll never notice if you have a flat if you don’t do this.

Rougher ride: The rigid sidewalls that let a run-flat function also provide for a rougher ride. If the car was built with run-flat tyres, the suspension is frequently tweaked to compensate for the rougher ride.

The cost of replacing run-flat tyres is higher. The cost of a tyre will vary depending on the type and place of purchase.

 Self-Sealing Tyre

A self-sealing tyre isn’t the same as a run-flat tyre in that it can’t function without air. In the event of a breakdown, it features a coating of sealant inside the tyre that can keep the air pressure up. If you pull a nail from the tyre, the sealant will heal the puncture as long as it is directly in the middle of the tread and is less than 5 millimetres in diameter.

The self-sealing tyre’s primary advantage is that it looks like a regular tyre. It can be combined and mixed with regular tyres and has the same tread lifetime.

The disadvantages include a greater price (about the same as a run-flat tyre) and limited availability.

This sort of tyre isn’t normal on new cars, but it’s worth noting because it can be purchased as a replacement.

Although run-flat tyres appear to have more disadvantages than advantages, many people stand by them. Before you purchase a vehicle, read consumer reviews and learn about the tyres that come standard.

Furthermore, whereas regular tyres are frequently mended, run-flats are far more difficult to repair. Many particularly advise against repairing a damaged run-flat because driving on the tyre with little to no air might harm the internal structure and render it dangerous.

 What will happen if You keep going?

Internal bending in a flattened run-flat tyre produces a lot of heat, which damages both the material and the steel-and-fabric construction beneath it. 

So, you can’t fix it?

Unless there’s merely a hole in the tread and you spotted it early, probably not. In most circumstances, a new tyre is required.

Does this rule out the necessity for a backup?

A bent wheel can’t be fixed using run-flats kits. Furthermore, because run-flats have a smaller profile, they give even less rim support. You’ll miss carrying a fifth wheel if you damage a rim, so if you’re purchasing a new vehicle and a spare is an option, take it.

Is it simple to change to run-flat tyres?

In a nutshell, switching is feasible. It may take considerable tweaking, including suspension changes if your automobile was not equipped with run-flat Car Tyres Fareham. A tyre pressure monitoring system must be installed in vehicles with run-flat tyres. When a puncture occurs, the TMPS will notify the driver, letting you know whenever the tyre has to be replaced.

Run-flat tyres are usually a little more costly than traditional tyres. However, rates for run-flat tyres vary according to the size, type, and make of the vehicle, so it’s better to acquire an estimate for your specific vehicle.

When you inflate the tyres to their maximum pressure, what happens?

At maximum pressure, the driving qualities alter.

Because high-pressure tyres can’t offer as much on the sidewall, you can get good cornering speed, but you risk exceeding your braking limit. The back end might easily fall out if you take a sharp corner.

At maximum pressure, the life of your tyres is reduced.

When your tyres are overinflated, the rubber of the tyre rounds out while driving, causing the centre to wear out faster. You’ll also lose traction, possibly resulting in a blowout.

What happens if you underinflate or overinflate the tyres?

When you travel with the tyres over-inflated, you run the danger of:

There are issues with management and safety. Your tyres won’t be able to offer as much on the sidewall, putting your braking precision at risk. You’d also be at risk of losing traction.

  • Tyre wear. Since the rubber bulges in the middle, improving that area’s interaction with the road, your tyre will wear considerably faster and only in the centre.
  • Blowouts. Because bald areas can’t release heat as well, your tyres may blow up unexpectedly.

When your tyres are under-inflated, you run the danger of:

  • Protection and tyre failure. Underinflated tyres lengthen braking lengths and have a significant impact on steering and stability. Furthermore, when tyre pressure drops, more of the tread surface of the tyre contacts the road, causing friction. In extreme circumstances, this friction can produce overheating, which can result in tread rupture and blowouts.
  • Premature wear reduces the life of your tyres by 15% or more. Since the edges of your tyres make excessive contact with the ground when they are underinflated, they wear out on both external shoulders, resulting in poor fuel economy. Underinflated tyres force your engine to work harder, reducing fuel economy. Underinflated tyres put more tyre surfaces in touch with the road, generating higher rolling resistance and contact with the road. 

If you’ve been travelling with your tyres under or over-inflated, pump them to the manufacturer’s suggested pressure as soon as possible to ensure your safety.

What effect does temperature have on tyre pressure in the summer and winter?


Air contracts as the temperature decreases, and as the particles draw closer together, the volume decreases, causing tyres to lose pressure. Your tyres will be underinflated before you realize it. During the winter, make sure to check the tyre pressure on a regular basis.


In the same way that cold outside air contracts the air inside the tyres in the winter, warmer air expands the air inside the tyres in the summer. Tyre pressure rises about one PSI for every 10 degrees Fahrenheit rise in temperature, according to the rule of thumb. So, if your manufacturer’s recommended inflation value is 35 PSI, your tyre pressure might reach around 40 PSI on those scorching days. In the summer, it’s also crucial to remember that driving means friction between the ground and your tyres, which means you got to have a rise in tyre pressure.

As a result, the air pressure can rise by roughly five PSI in the first half-hour of riding, regardless of the conditions, before settling. That figure can increase, and not for the good, amid the blazing heat of summer pavement at fast speeds for large periods.

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