Run-flat tyres are standard on many new cars — but they come with trade-offs. Here is an honest guide to whether they are right for your vehicle.
How Do Run-Flat Tyres Work?
Run-flat tyres feature reinforced sidewalls that allow the tyre to support the weight of the vehicle even when completely deflated. Rather than collapsing instantly as a standard tyre would, a run-flat can continue to be driven on for a limited distance — typically up to 80km (50 miles) at speeds no greater than 80 km/h (50 mph). This allows you to reach a garage or safe location without needing to change a tyre at the roadside. Because of this capability, many manufacturers that fit run-flats do not include a spare wheel, reducing vehicle weight.
The technology was originally developed for high-end BMW and Mercedes models but is now found across a wide range of vehicles including everyday family cars, SUVs, and performance cars. If your vehicle came with run-flat tyres as original equipment and has no spare wheel or tyre inflation kit, you must replace them with genuine run-flat replacements — fitting a standard tyre would mean you have no safe option in the event of a future puncture.
The Drawbacks of Run-Flat Tyres
Run-flat tyres are significantly more expensive than their standard equivalents — often 50–100% more per tyre. The reinforced sidewall also makes the ride firmer, which some drivers find noticeably uncomfortable on UK road surfaces. Additionally, run-flat tyres generally cannot be repaired after a puncture: most manufacturers recommend replacement rather than repair, even for minor punctures that could be safely repaired in a standard tyre. This makes every puncture a costly event.
Just Mobile Tyres stocks run-flat tyres from all major brands including Michelin, Continental, Bridgestone, and Pirelli. If you are not sure whether your vehicle runs on run-flats, check the sidewall for markings such as RFT, RSC, SSR, or ZP, or call us and we will check using your vehicle registration. We can advise on the best replacement options and fit them at your home or workplace across Northamptonshire.
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