Run-Flat Tires: How They Work, Benefits, and Proper Care

• Continued mobility following a puncture

• Enhanced vehicle stability when there is an abrupt loss of air

• Reduced need for roadside tire changes

• The possibility of removing a spare tire to make room for cargo

Given these advantages, run-flat tires are a common option for many modern cars.

Proper service is essential for run-flat tires, especially after a low-pressure or zero-pressure event.

If a run-flat tire has been driven with little or no air pressure, it should always be removed from the wheel and inspected by a qualified tire professional, even if no visible damage is present. Internal damage may not be detectable from the outside but can affect safety and performance.

Run-flat tire service recommendations include:

• Performing a thorough visual and internal inspection after any pressure loss

• Verifying whether the tire has been driven beyond approved zero-pressure limits

• Replacing the tire if internal damage is detected

• Following vehicle manufacturer guidelines when replacing one or more run-flat tires

Services that help maintain tire performance after inspection or replacement include wheel alignment and wheel balancing, which support even tire wear and smooth vehicle operation.

In some cases, replacing all four run-flat tires at the same time may be recommended to maintain consistent handling and vehicle performance. When fewer tires are replaced, tread depth and overall tire condition should be carefully evaluated to ensure compatibility.

Replacing run-flat tires with conventional tires may be possible on certain vehicles, but it should only be done with professional guidance, as vehicle systems and safety features may be affected.

A Michelin tire professional can help determine the safest and most appropriate replacement option for your vehicle. You can find a qualified specialist near you using Michelin Canada’s Dealer Locator.

Maintaining proper inflation pressure is especially important for run-flat tires. Some drivers choose nitrogen inflation because it offers benefits that support long-term tire performance.

Nitrogen inflation helps:

• Reduce pressure loss over time compared to regular air

• Limit internal moisture buildup inside the tire

• Support more stable inflation pressure in changing temperatures

More constant pressure can promote consistent tread wear and increase tire life when combined with regular maintenance and inspection.

Learn more about proper tire inflation as part of Michelin Canada’s Routine Tire Care Tips, which explain how maintaining correct pressure supports tire longevity, performance, and safety.

Because of their reinforced construction, run-flat tires benefit from consistent monitoring and professional servicing over time. Maintaining proper inflation, responding promptly to warning indicators, and following recommended service guidance all help support safety and long-term tire performance.