When it comes to tyre care, most of us know the importance of keeping our tyres properly inflated. But did you know that having over-inflated tyres can be just as dangerous as under-inflated ones?
Over-inflated tyres might seem harmless at first, but they can lead to a range of issues that compromise your safety, comfort, and even your wallet. Let’s dive into what you need to know to avoid this common pitfall.
What Does Over-Inflation Mean?
Over-inflation occurs when the air pressure in your tyres exceeds the manufacturer’s recommended levels. Tyre pressure is measured in pounds per square inch (PSI), and you can usually find the recommended tyre pressure in PSI for your vehicle in the owner’s manual or on a sticker inside the driver’s door.
While it’s tempting to think that a little extra air pressure might improve fuel efficiency or handling, over-inflation often causes more harm than good – and incorrect tyre pressure is, sadly, a cause of many serious accidents.
The Risks of Over-Inflated Tyres
1. Reduced Traction
When a tyre is over-inflated, its contact patch with the road becomes smaller. This reduces the rolling resistance (grip your tyres have on the road), making it harder to brake effectively and increasing the risk of skidding, especially in wet or slippery conditions.
2. Uneven Tyre Wear
Over-inflated tyres tend to wear out faster in the centre of the tread, as the extra air pressure pushes the middle of the tyre outward. This uneven wear shortens the lifespan of your tyres and can lead to costly replacements sooner than expected.
3. Decreased Ride Comfort
Excessive air pressure makes tyres less able to absorb bumps and shocks from the road. This leads to a harsher, less comfortable ride for you and your passengers.
4. Increased Risk of a Blowout
Over-inflated tyres are under more stress, making them more prone to damage from potholes, debris, or sudden impacts. This added pressure increases the likelihood of a blowout, a term used for complete tyre failure, which can be exceptionally dangerous, especially at high speeds.
How to Tell If Your Tyres Are Over-Inflated
Checking your tyre pressure regularly is the best way to avoid over-inflation. Here are some signs that your tyres might have too much air:
- Harsh Ride: If your car feels bumpier than usual, it could be due to over-inflated tyres.
- Visible Bulging: Over-inflation can cause the tyre’s centre to bulge outwards, reducing its contact with the road.
- Uneven Wear Patterns: If the centre of the tread looks more worn than the edges, over-inflation could be the culprit.
How to Fix and Prevent Over-Inflation
1. Use a Reliable Tyre Pressure Gauge
Invest in a good-quality tyre pressure gauge to check your tyre pressure regularly. This ensures you can monitor and adjust the PSI as needed.
2. Follow Manufacturer Recommendations
Always inflate your tyres to the PSI level recommended by your vehicle’s manufacturer. This information can be found in your owner’s manual or on the placard inside the driver’s door.
3. Check Tyre Pressure When Cold
Tyre pressure increases naturally as you drive and the tyres heat up. For the most accurate reading, check your tyre pressure when the tyres are cold—ideally before you start driving.
4. Inspect Tyres Regularly
Look for signs of uneven wear, bulging, or any other abnormalities. If you notice anything unusual, have a professional inspect your tyres.
Why Proper Tyre Pressure Matters
Making sure you have the correct tyre pressure is one of the simplest and most effective ways to ensure safe and efficient driving. Properly inflated tyres improve:
- Fuel Economy: Tyres with the correct pressure roll more smoothly, helping you save on fuel.
- Handling: Your car’s performance improves with the correct tyre pressures, giving you better control on the road.
- Tyre Longevity: Balanced pressure ensures even wear, helping your tyres last longer – over or under inflated tyres wear are prone to excessive tyre wear.
Stay Safe with Auto Hero
Over-inflated tyres might seem like a small issue, but they can lead to significant safety risks and unnecessary expenses. If you’re unsure about your tyre pressure or notice signs of over-inflation, Auto Hero can connect you with trusted local professionals who can inspect, adjust, or replace your tyres as needed.
With Auto Hero, comparing services and finding the best tyre experts near you has never been easier. Drive with confidence and proper tyre inflation – knowing your vehicle is safe!
Written By
Matt Banks
Matt is the founder of Autohero.com.au and has been hooked on cars and repairs ever since childhood.
A veteran in automotive since leaving school, Matt has completed his trade as a panel beater and is across all things with wheels.
His first car was a 1967 FORD XR Wagon followed by a string of collectable Holden’s.
Have a question for Matt? leave a comment below.