*source: https://www.continental-tires.com/ca/en/b2c/car/continental-tire-technologies/runflat-tires.html

What is a "Run Flat Tire"?

A run-flat tire is a tire that is designed to run for a period of time without air inside.

This type of tire is common on higher end vehicles that do not have spare wheels. Instead, they rely on run flat tires to give the driver enough time to get to the garage.

How does it work?

In the event of air loss, the tire does not completely deflate like a regular tire. These tires have stiffer sidewalls or have a band inside the tire that support it. This process makes it possible to go to the garage to have the cause for the air loss validated.

The range of the run flat is about 80 km at low speed. However, refer to your manufacturer to know the parameters.

The advantages of RFT tires

• Avoid unfortunate situations where changing a tire could be dangerous (e.g. on the side of the highway).
• Eliminates the need for a bulky spare tire.

The disadvantages

• More expensive to purchase.
• The drive is firmer.
• Requires pressure sensors (TPMS) to monitor the pressure via the on-board computer and to notify in case of problem.
• An RFT tire that has run out of air is usually beyond repair and requires a complete replacement.

How do I know if my vehicle needs a run flat?

On the inside of the driver's side door frame, you will find a sticker with the tire dimensions that are specific to your vehicle. If the letters RFT or RF are displayed on it, before or after the measurement your vehicle needs run flat.

Example: RF 205-55-16 or RFT 205-55-16

My vehicle requires RFTs but I would like to save money by switching to regular tires. Is this possible?

This is a question we are often asked! Beyond the fact that your vehicle does not have a spare tire and that in case of a major problem, you will be stuck, you must not forget that your car was designed for stiffer than normal tires.

Opting for standard tires could change your driving dynamics as the steering and suspension may be affected. 

On the other hand, if your car is not designed for run-flats, you will probably feel that the ride is harder and the handling is altered.

Be careful and ask your manufacturer for good recommendations.

Finally, more and more vehicles are coming out of the assembly plants with so-called run flat tires. These tires make it possible to avoid the presence of a spare tire in the vehicle by allowing the driver to get to his destination in case of a flat tire. Let's face it, the cost of these tires often makes you cringe.

When you buy your vehicle, find out what type of tires are installed and plan your budget accordingly!

Do not hesitate to contact us via our online messaging system for more information.

One of our consultants can also guide you at 1 855 380-5285.