Regular tyre pressure checking is one of the most important yet overlooked aspects of vehicle maintenance. Proper pressure affects safety, fuel economy, tyre life, and handling performance, making it essential for every driver to establish a regular checking routine.
How often to check tyre pressure: Check your tyre pressures at least once monthly, and always before long journeys. Temperature changes, natural permeation, and small leaks cause gradual pressure loss - typically 1-2 PSI per month under normal conditions.
When to check: Always check pressures when tyres are cold - before driving or at least three hours after driving. Driving heats tyres and increases pressure, giving false readings that could lead to under-inflation.
Where to find correct pressures:
- Vehicle owner's manual
- Sticker inside driver's door frame
- Sometimes inside fuel filler cap
- Glove compartment documentation
- Manufacturer's website using your vehicle details
Equipment needed:
- Pressure gauge: Digital gauges are most accurate and easy to read
- Air compressor: Portable 12V compressors offer convenience
- Alternative: Use petrol station facilities with reliable gauges
Effects of incorrect pressure:
Under-inflation consequences:
- Increased fuel consumption (up to 5% more with 20% under-inflation)
- Accelerated edge wear reducing tyre life
- Increased heat buildup risking blowouts
- Reduced handling and braking performance
- Higher rolling resistance
Over-inflation problems:
- Reduced contact patch affecting grip
- Harsher ride quality
- Increased susceptibility to impact damage
- Centre tread wear
- Reduced traction in wet conditions
Seasonal adjustments: Tyre pressure changes with temperature - approximately 1 PSI for every 10°C change. Check and adjust pressures when seasons change, particularly before winter when pressures naturally drop.
Load adjustments: Many vehicles have different pressure recommendations for different load conditions. Increase pressures when carrying heavy loads or multiple passengers, following manufacturer guidelines.
Spare tyre considerations: Check spare tyre pressure every three months. Temporary spare tyres often require higher pressures (typically 60 PSI) and have speed/distance limitations.
Warning signs of pressure problems:
- Visible bulging at the bottom of tyres
- Uneven wear patterns
- Reduced fuel economy
- Vehicle pulling to one side
- TPMS (Tyre Pressure Monitoring System) warnings
Professional checks: Have pressures checked during routine services, MOT tests, or when visiting tyre retailers. Many offer complimentary pressure checks as part of customer service.
At tyres.online, our partner retailers provide pressure checking services and can recommend the best equipment for home maintenance, ensuring you maintain optimal pressures for safety, economy, and tyre longevity throughout your tyres' service life.