How to tell if your tyres are overinflated

Tyre pressure controls how your car handles, brakes and wears over time. Most drivers worry about tyres being underinflated, but over inflated tyres can be just as dangerous and often go unnoticed. 

If your tyres are filled above the recommended pressure, it can affect grip, comfort and even steering. Knowing the signs early can help you avoid uneven wear, reduced control and unnecessary tyre replacements. 

 

What Happens When Tyre Pressure Is Too High? 

When your tyre pressure is too high, the tyre becomes overly stiff and loses its ability to flex properly on the road. This reduces the contact area between the tyre and the surface, meaning less grip and stability. 

This can lead to: 

• reduced traction, especially in wet conditions  

• faster wear along the centre of the tyre  

• a harsher, less comfortable ride  

• increased risk of damage when hitting potholes or kerbs  

Even a small increase above the recommended PSI can make a noticeable difference to performance. 

 

Signs of Over Inflated Tyres 

 

1. Excessive Centre Tread Wear 

One of the most common signs of over-inflated tyres is uneven wear across the tread. If the middle of the tyre is more worn than the edges, it usually means the tyre pressure is too high. 

This happens because the centre of the tyre is taking most of the load instead of distributing the weight evenly. 

 

2. Reduced Grip and Traction 

When tyre pressure is too high, the tyre cannot maintain full contact with the road surface. This reduces the size of the contact patch, which directly affects grip. 

You may notice the car feels less stable when cornering or that it takes slightly longer to stop when braking. In wet weather, this becomes more noticeable, as the tyres struggle to maintain traction on slippery surfaces. 

Reduced grip is one of the more dangerous effects of overinflation, as it can compromise control in everyday driving conditions. 

 

3. A Harsher, Less Comfortable Ride 

Tyres are designed to absorb some of the impact from the road. When they are overinflated, they become too stiff to do this effectively. 

As a result, you may feel every bump, pothole or uneven surface more than usual. The ride can feel noticeably firmer or more uncomfortable, especially on rough roads. 

If your car suddenly feels less smooth to drive, and nothing else has changed, it could be a sign that your tyre pressure is too high. 

 

4. Increased Sensitivity to Road Imperfections 

Overinflated tyres are less flexible, which means they do not adapt well to changes in the road surface. This can make your car feel more reactive to small imperfections, such as cracks, potholes or speed bumps. 

Instead of absorbing the impact, the tyres transfer more of the force into the vehicle. Over time, this can also put additional strain on suspension components. 

Drivers often describe this as the car feeling “jumpy” or less settled on the road. 

 

5. Unusual or Heavier Steering Feel 

A common question is, can over inflated tyres cause heavy steering? 

While underinflation is more commonly linked to heavy steering, overinflation can also affect your car’‘s handling. With less tyre in contact with the road, steering can feel less responsive or slightly heavier, particularly at lower speeds or when manoeuvring. 

In some cases, it may also feel overly sensitive at higher speeds, as the reduced grip makes the car react differently to steering inputs. 

If your steering suddenly feels different without any obvious mechanical issue, it is worth checking the tyre pressure. 

 

6. Increased Risk of Tyre Damage 

Overinflated tyres are more vulnerable to damage because they cannot absorb impacts as effectively. Hitting a pothole, kerb or debris in the road can put more stress on the tyre, increasing the risk of punctures or internal damage. 

This is because the excess pressure makes the tyre more rigid, reducing its ability to flex and protect itself against sudden impacts. 

Even if damage is not immediately visible, repeated stress can weaken the tyre over time. 

 

What Causes Tyre Pressure to Be Too High? 

Tyre pressure can increase for a few reasons: 

• Overfilling tyres during inflation  

• temperature changes, as warmer air expands inside the tyre  

• not checking pressure regularly  

• relying on outdated or incorrect PSI recommendations  

Even seasonal changes can cause tyre pressure to change slightly, which is why regular checks are important. 

 

How to Fix Over-Inflated Tyres 

If you suspect your tyres are overinflated, the fix is straightforward. 

First, check your tyre pressure using a reliable pressure gauge. You can find the correct PSI for your vehicle in: 

• the car manual  

• inside the driver’s door frame  

• the fuel cap  

If the pressure is too high, gently release air from the tyre in small amounts until it reaches the recommended level. 

It’s best to check tyre pressure when the tyres are cold, as driving increases pressure and can give inaccurate readings. 

 

How Often Should You Check Tyre Pressure? 

To avoid issues with tyre pressure being too high or too low, you should check your tyres at least once a month and before long journeys. 

Regular checks help: 

• extend tyre lifespan  

• improve fuel efficiency  

• maintain safe handling  

• reduce the risk of uneven wear 

 

Keep Your Tyres Safe with the Correct Pressure 

Driving with over inflated tyres might not seem like a major issue, but it can reduce safety, comfort and tyre lifespan. Keeping your tyre pressure at the correct level ensures that your car performs effectively in all conditions. 

If you are unsure whether your tyres are correctly inflated or you have noticed uneven wear, Merityre can help. With expert tyre checks, pressure adjustments and a wide range of replacement tyres available, you can stay safe on the road with confidence. We also provide wheel alignment services as well as wheel balancing.