Motorists across the UK have been urged to check their tyre pressure ahead of a scorching heatwave expected to peak on Thursday, with temperatures forecast to reach 38°C. The warning comes from tyre manufacturer Continental, whose technical expert Steve Howat stressed that hot weather can cause air molecules to expand, increasing tyre pressure without drivers noticing. This change can affect vehicle handling, fuel economy, and safety.
Why Heat Affects Tyre Pressure
As temperatures rise, the air inside tyres expands, leading to higher pressure readings. According to Howat, most drivers overlook this during a heatwave, but incorrect pressure compromises grip, fuel economy, and braking distance. In extreme conditions, it can cause uneven tyre wear, reduced handling control, and even increase the risk of a blowout. “Tyre pressure tends to rise in warmer months, so it’s important to check your tyre pressure regularly with a reliable pressure gauge, especially before long journeys,” he advised.
How to Check and Adjust Tyre Pressure
Drivers should consult their vehicle’s handbook or the plate inside the driver’s door for the recommended pressure. Howat noted that pressure may need to be slightly higher when carrying additional loads. Halfords also recommends a simple touch test: if the rubber feels hot, stop driving and let the tyres cool down before continuing. “When your tyre pressure is too high, it can significantly increase the risk of a blowout. Also, less of the tread is in contact with the road, reducing traction,” a Halfords spokesperson said.
Broader Impact on Driving
Incorrect tyre pressure not only affects safety but also increases fuel consumption. With the UK bracing for the hottest day of the week on Thursday, motorists are advised to check pressures before setting out on any journey. The warning follows other motoring advice issued this week, including calls for drivers to fill up before Wednesday and an AA alert about gritters on UK roads.
