Tyre pressure is one of those things most drivers only think about when a warning light comes on — by which point the damage is often already done. Correct tyre pressure affects your safety, fuel economy, tyre life and handling in ways that most people significantly underestimate.
What Happens With Under-Inflated Tyres?
When a tyre is under-inflated, more of the tyre’s sidewall flexes with every rotation. This generates heat — the enemy of rubber. Under-inflated tyres wear faster on both outer edges, use more fuel (because rolling resistance increases), and are at greater risk of sudden failure, especially at motorway speeds.
What Happens With Over-Inflated Tyres?
An over-inflated tyre rides on its centre strip, wearing through the middle while the edges remain relatively fresh. The ride becomes harsher, grip is reduced because less tyre surface is in contact with the road, and the tyre is more vulnerable to damage from road hazards like potholes.
How Much Does It Affect Fuel Economy?
Studies show that tyres inflated 20% below the recommended pressure increase fuel consumption by around 2–3%. Over a year of driving, that adds up to a noticeable cost. Correct pressure costs nothing.
How to Check Your Tyre Pressure
Use a digital gauge — they’re more accurate than the old dial types. Check when the tyres are cold (the car hasn’t been driven for at least three hours, or less than 2 miles at low speed). Hot tyres give a higher reading that doesn’t reflect true resting pressure.
Your correct pressures are in the owner’s manual or on a sticker inside the driver’s door frame. Note that front and rear pressures are often different, and that the pressure may change when the car is fully loaded.
TPMS — Your Dashboard Warning Light
Most cars built after 2014 have a Tyre Pressure Monitoring System (TPMS). The warning light looks like a cross-section of a tyre with an exclamation mark. If it comes on, one or more tyres are significantly under-inflated. Don’t ignore it — check and inflate as soon as possible.
For help with TPMS sensors, slow punctures or tyre replacements across North Wales, contact Logistic Move.