Why Incorrect Tyre Pressure Can Affect Safety, Mileage, and Tyre Life

Tyres are the only part of a vehicle that remain in direct contact with the road, yet tyre pressure is one of the most ignored maintenance areas among drivers. Many people check engine oil regularly but continue driving for months without inspecting tyre pressure. Incorrect tyre pressure may seem like a small issue, but it can directly affect fuel efficiency, braking performance, ride comfort, and even road safety. Both underinflated and overinflated tyres can create problems in daily driving conditions. Why Tyre Pressure Matters Tyres are designed to operate within a specific pressure range recommended by the manufacturer. This pressure helps maintain: * Proper road grip * Stable handling * Balanced tyre wear * Better fuel efficiency * Safe braking performance When tyre pressure changes, the tyre’s contact patch with the road also changes, affecting overall driving behaviour. Problems Caused by Low Tyre Pressure Underinflated tyres are extremely common, especially during seasonal temperature changes. When tyre pressure becomes too low: * Rolling resistance increases * Engine works harder * Fuel consumption rises * Steering may feel heavier * Tyres heat up faster Low pressure also increases sidewall flex, which can damage the tyre internally over time. In highway conditions, overheated underinflated tyres may even increase the risk of tyre failure. Common Symptoms of Low Pressure * Vehicle feels sluggish * Reduced mileage * Uneven tyre wear on edges * Heavy steering feel * Poor braking response Problems Caused by High Tyre Pressure Some drivers intentionally overinflate tyres believing it improves mileage. While higher pressure may slightly reduce rolling resistance, excessive pressure creates different safety concerns. Overinflated tyres may: * Reduce road grip * Increase harshness over potholes * Cause uneven centre tyre wear * Reduce braking stability * Increase chances of damage on rough roads In extreme cases, impact damage from potholes becomes more severe because the tyre absorbs less shock. Weather Also Changes Tyre Pressure Temperature affects tyre pressure naturally. During summer: * Air inside tyres expands * Pressure increases slightly During winter: * Air contracts * Pressure drops This is why periodic checks are important, especially during seasonal changes or long highway trips. Incorrect Pressure and Fuel Efficiency Tyre pressure directly affects mileage because it changes rolling resistance. Low pressure creates more drag on the road surface, forcing the engine to use more energy to move the vehicle. Even slightly low tyre pressure across all four tyres can reduce fuel efficiency over time. For drivers covering high monthly running, this can increase fuel expenses noticeably. When Should Drivers Check Tyre Pressure? Experts generally recommend checking tyre pressure: * Every two weeks * Before long trips * During seasonal weather changes * After puncture repairs * When carrying heavy loads Pressure should ideally be checked when tyres are cold for more accurate readings. Don’t Ignore the Spare Tyre One common mistake is forgetting the spare wheel entirely. Many drivers discover the spare tyre is flat only during emergencies. Periodic inspection of the spare tyre is equally important for safety. How to Find Correct Tyre Pressure The recommended tyre pressure is usually mentioned: * Inside the driver-side door frame * Fuel lid area * Owner’s manual The correct value may vary depending on: * Passenger load * Vehicle type * Tyre size Following manufacturer recommendations is safer than guessing. Final Thoughts Tyre pressure may appear to be a small maintenance detail, but it has a major impact on safety, tyre life, comfort, and fuel economy. Regular pressure checks take only a few minutes but can improve vehicle performance while reducing long-term running costs. Sometimes, better driving safety starts with something as simple as properly inflated tyres.