Most cars require tyre pressures between 30 and 35 PSI (around 2.1 to 2.4 BAR), but the correct pressure for your vehicle will depend on the manufacturer’s recommendations, tyre size, and load weight. You can usually find the correct tyre pressure inside the driver’s door frame, inside the fuel filler flap, or in the owner’s handbook.
For our team at Pantech Auto Technicians, incorrect tyre pressure is one of the most common issues identified during servicing and MOT checks. Driving with tyres that are underinflated or overinflated can affect safety, fuel efficiency, handling, and tyre lifespan.
This guide explains how to find the correct tyre pressure for your car, what PSI and BAR mean, and answers some of the most common tyre pressure questions.
Key Takeaways
- Most cars require tyre pressures between 30 and 35 PSI (around 2.1 to 2.4 BAR), but the correct figure always depends on the manufacturer’s recommendation for your specific vehicle.
- Correct tyre pressure improves safety, fuel efficiency, handling, braking performance, and tyre lifespan, while incorrect pressure increases wear and running costs.
- PSI and BAR are the two main units used to measure tyre pressure, and both can be found on gauges, air pumps, and vehicle information labels.
- Tyre pressure should be checked regularly, particularly before long journeys or when carrying extra load, as it naturally changes with temperature and usage.