Run flat tyres aren't repairable. That's because, once they've been driven on, they lose their structural integrity, making them unsuitable for puncture repair. If they are patched up, it's highly likely they'll puncture again down the line due to uneven wear and loss of rigidity.
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Do run-flat tires say run flat on them?
You can usually tell if your tires are run-flat by looking at your tires, or by examining other details about your car. Find the words “Run Flat”, "SSR", "HSR", "RF", "Run On Flat", "ZP", "DSST", "RFT" on your tires.23 Nov 2021
The Pilot Sport A/S 3 + RUN FLAT is Michelin's ultimate Ultra High Performance Summer/All-Season tire with the highest level of performance and grip in all driving conditions. The A/S 3+ incorporated Michelin's Helio+ Compound Technology enhancing its braking performances on wet surfaces and even on light snow.
BMW promote run flat technology because of its advantages for driver comfort and safety. They point out that when run flats are fitted as original equipment, then vehicles' braking and suspension are set up accordingly, so changing to conventional tyres may affect the handling characteristics of your car.
Run flat tyres that maintain the car in motion under low or zero air pressure are being offered by many car makers like BMW as original equipment for their high end models. What are RunFlat Tyres? The technology simply allows you to stay mobile inspite of having a puncture or a blow out in your car tyre.