If your car came fitted with run-flat tyres, you may not even know it until the day one is punctured — and the experience is genuinely different from a standard tyre going flat. Here's what the difference actually means in practice.
What a run-flat tyre does
A run-flat tyre has reinforced sidewalls that keep the tyre's shape even with no air pressure, so the car stays controllable rather than the tyre collapsing off the rim. In most cases this means you can keep driving at a reduced speed (usually up to around 50mph) for a limited distance (commonly up to around 50 miles) after a puncture — enough to get somewhere safe rather than being stuck exactly where it happened. The exact speed and distance limit varies by tyre brand and model, so it's worth checking your specific tyre or vehicle handbook rather than assuming a number.
Why there's usually no spare
Most vehicles fitted with run-flats don't carry a spare wheel at all — the run-flat's whole purpose is to remove the need for one. That's fine until the tyre needs replacing, at which point you genuinely need a replacement tyre or a mobile fitting visit, since there's no spare to fall back on.
Repair or replace?
This is the biggest practical difference versus a standard tyre. Many tyre manufacturers advise against repairing a punctured run-flat at all, because the reinforced sidewall construction that makes it "run flat" in the first place can mask internal damage that a repair wouldn't catch — so a puncture usually means replacement, not a plug or patch. A standard tyre, by contrast, can often be safely repaired if the damage is in the right location and within size limits. We'll always check and tell you honestly which applies to your situation rather than assuming.
Our approach: we check whether your tyre is a genuine run-flat before quoting, since it changes whether a repair is even an option — and we confirm the price before any work starts either way.
Run-flat punctured and not sure what it needs?
The bottom line
A run-flat buys you time and control after a puncture that a standard tyre can't — but it usually means replacement rather than repair once it's actually punctured. Knowing which type you have before you need it is worth five minutes checking your handbook or sidewall markings.