How to Identify a Run-Flat Tire
by David Lipscomb
Run-flat tires, initially introduced by BMW, are designed to stay on the rim in the case of a catastrophic blowout. These tires are self-sealing, incorporating a gel layer under the tread surface. In the event of a puncture, this gel instantly forms a seal around the debris that caused the puncture or hole. This is generally permanent. Identify run-flat tires by carefully inspecting the tires for specific markings.
Step 1
Turn on the flashlight. Scan the sidewall of the tire.
Step 2
Look for markings such as "ZP," "RFT," "SEAL" or an image of a flat tire with an arrow pointing away from it. Use the magnifying glass to pick out these indices, if necessary.
Step 3
Inspect the rim area of the tire as many run-flat models have plastic, load-bearing slugs in lieu of a traditional rubber rim attached to the wheel.
References
Tips
- Run-flat tires cannot be retread due to the nature of the internal construction of the tire.
- Cars equipped from the factory with run-flat tires (every car manufactured after 2008) have a tire pressure indicator on the dash. If this indicator light turns on, have your tires inspected.
Things You'll Need
- Magnifying glass
- Flashlight
Warnings
- Many run-flat models specify that you should not exceed 55 miles per hour after puncture.
Writer Bio
David Lipscomb is a professional writer and public relations practitioner. Lipscomb brings more than a decade of experience in the consumer electronics and advertising industries. Lipscomb holds a degree in public relations from Webster University.
