Tyre pressure is one of the most overlooked aspects of vehicle maintenance in Cardiff, yet it directly affects your fuel consumption, tyre lifespan and — most critically — your ability to brake safely on South Wales's frequently wet roads. Tyre pressure is measured in PSI (pounds per square inch) or BAR. Your vehicle's recommended pressures are printed on a sticker inside the driver's door frame or in the owner's manual. Note that front and rear pressures often differ.
Under-inflated tyres are a leading cause of tyre failure on Cardiff roads. Running 10% below the recommended pressure increases fuel consumption by around 2.5% and dramatically shortens tyre life. More dangerously, under-inflation causes excessive sidewall flex and heat build-up that can lead to a sudden blowout — particularly on motorway stretches like the M4 through Cardiff. Over-inflated tyres reduce the contact patch between tyre and road, making handling imprecise and causing accelerated centre tread wear.
Check your tyre pressures at least once a month and always before a long journey — always when the tyres are cold, as heat from driving inflates the reading artificially. Cardiff drivers who notice one tyre repeatedly losing pressure likely have a slow puncture — call Royal Mobile Tyres on 029 22714889 and we'll come to your location to diagnose and fix it the same day across all Cardiff and South Wales postcodes.