The Impact of Hot Weather on Tyre Pressure


It's important to monitor several aspects of our cars as the summer heat increases, including the tyre pressure. The pressure inside car tyres can be significantly impacted by temperature, creating potential safety risks and even affecting the value of vehicles. The relationship between hot weather and tyre pressure will be discussed in this article, along with how it may affect car value.

Understanding Tyre Pressure:

It's crucial to understand the significance of maintaining proper tyre pressure before exploring the effects of hot weather. The amount of air in a tyre, expressed in pounds per square inch (psi), is referred to as tyre pressure. For safe handling, effective braking, and overall vehicle performance, tyres must be properly inflated. The pressure levels recommended by manufacturers guarantee the best performance and safety.

The Effect of Heat on Tyre Pressure:

Tyre pressure can be significantly affected by hot weather because of the physical characteristics of air and rubber. The air inside the tyre expands when it is exposed to higher temperatures, increasing pressure. Tyre pressure can increase by one to two psi for every ten degrees Fahrenheit rise in temperature, according to experts. Tyres that were properly inflated in cooler weather may consequently become overinflated in hot weather.

Implications for Safety:

Tyres that are overinflated can have a negative impact on a vehicle's performance and safety. Reduced tyre contact area with the road due to increased pressure results in less traction and poor handling. This situation can be especially risky when performing emergency manoeuvres or when coming across slick surfaces. Due to the rigid tyre structure's reduced tolerance for road hazards, overinflated tyres are also more prone to punctures.

Fuel Efficiency and Tire Wear 

Overinflation brought on by hot weather can have negative effects on safety as well as fuel economy and tyre life. Smaller contact patches on overinflated tyres increase rolling resistance. As a result, the engine has to work harder, which reduces fuel efficiency. Additionally, the uneven distribution of tyre wear brought on by overinflation can hasten tyre deterioration and call for replacement earlier than anticipated.

Car Valuation Considerations:

The upkeep and condition of a car's tyres are very important in determining its value. When determining a vehicle's value, prospective buyers and valuation professionals take into account elements like age, overall condition, and tyre wear. Hot weather-related overinflated tyres can hasten tyre wear and compromise overall condition, potentially lowering the car's value. On the other hand, if the tyres are well-kept and inflated, it can increase the value of the car and show responsible ownership.


Maintaining ideal tyre pressure can be difficult in hot weather, which can have a significant impact on vehicle performance, safety, and even car value. Every car owner needs to be aware of how heat affects tyre pressure. Regularly checking and adjusting tyre pressure in accordance with manufacturer recommendations, taking into account changes in the outside temperature, can make driving safer, improve fuel efficiency, and possibly even increase the value of your car.  Remember that having well-maintained tyres not only makes for a safer journey but also demonstrates responsible car ownership and raises the car valuation as a whole.