Bar (Pressure Unit)
The bar is a pressure unit used in Europe for tyre pressures, boost pressure and fuel and oil pressures.
What is Bar (Pressure Unit)?
One bar is close to normal atmospheric pressure at sea level. Typical car tyre pressures are around 2–2.8 bar. Some gauges show kPa, where 1 bar equals 100 kPa. Check tyre pressures when the tyres are cold, before driving more than a few kilometres.
How it works
One bar equals 100,000 pascals, or about 14.5 psi.
Why it matters for your car
Tyre pressures are measured as overpressure above the atmosphere. Use the pressure on the car’s placard, not the maximum printed on the tyre.
Other terms
- AdBlue Heater
- Battery Warning Light (Charging Light)
- Brake Light Switch
- Crankshaft Oil Seal
- Decibel (dB)
- Driving Range
- Hesitation (Flat Spot On Acceleration)
- Keyless Entry And Start
- NOx Sensor
- Number Plate Cloning
- Number Plate Light (Licence Plate Lamp)
- Piston Pin (Wrist Pin, Gudgeon Pin)
- Reversing Light Switch
- Sun Visor
- Torsion Bar Spring
- Twin Carburettors
- Tyre Valve
- Usable Battery Capacity (Net Capacity)
- Wheel Horsepower (WHP)
- Windscreen (Windshield)