How to Check Tyre Pressure: Complete Step-by-Step Guide
Checking your tyre pressure regularly is one of the most important maintenance tasks for your car. Learn how to do it correctly with our comprehensive guide.
Why Checking Tyre Pressure Matters
Safety
Correct pressure ensures optimal braking and handling
Fuel Economy
Save up to 3% fuel per PSI under-inflated
Tyre Life
Proper pressure extends tyre lifespan significantly
What You'll Need
- Tyre pressure gauge - Digital or analog (£5-£20 from any auto shop)
- Air compressor - Available at petrol stations or portable versions
- Your vehicle's recommended pressure - Found on driver's door jamb or manual
Step-by-Step Instructions
Check when tyres are cold
Check tyre pressure before driving or after the car has been stationary for at least 3 hours. Driving heats up tyres and increases pressure readings by 2-4 PSI.
Find recommended pressure
Locate your vehicle's recommended tyre pressure on the driver's door jamb sticker, fuel filler cap, or in the owner's manual. Note the front and rear pressures as they may differ.
Remove valve cap
Unscrew the valve cap from the tyre valve stem and keep it in a safe place.
Attach pressure gauge
Press the tyre pressure gauge firmly onto the valve stem. You should hear a brief hiss of air, then the gauge will display the pressure reading.
Read the pressure
Check the pressure reading on your gauge and compare it to the manufacturer's recommended pressure.
Adjust if needed
If pressure is low, add air using a compressor. If too high, release air by pressing the valve stem. Recheck after adjusting.
Replace valve cap
Screw the valve cap back on securely to prevent dirt and moisture from entering the valve.
Repeat for all tyres
Check all four tyres, including the spare if your vehicle has one. Don't forget to check the spare tyre regularly.
Important Tips
- Always check when cold: Wait at least 3 hours after driving for accurate readings
- Check monthly: Tyres naturally lose 1-2 PSI per month
- Don't forget the spare: Check your spare tyre every 6 months
- Front vs rear: Many cars need different pressures for front and rear tyres
- Seasonal changes: Pressure drops 1 PSI per 10°F temperature decrease
Common Questions
When is the best time to check tyre pressure?
First thing in the morning before driving, or after your car has been parked for at least 3 hours. This ensures tyres are cold and readings are accurate.
How often should I check my tyre pressure?
At least once a month and before any long journeys. Tyres naturally lose pressure over time, and seasonal temperature changes can affect pressure significantly.
What if my tyre pressure is different from recommended?
If it's within 2-3 PSI, adjust it to the correct pressure. If it's significantly low or keeps losing pressure, you may have a slow puncture and should get it checked by a professional.
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