Tire pressure for cars

car edito tyre pressure small2 help and advice

A tire loses some of its pressure through natural causes (typically around 1 psi (0.076 bars) per month). Pressure loss may be accelerated by other air leaks due to:

• an accidental puncture
• the valve: which must be changed each time a tire is changed.
• the valve cap: essential to guarantee an airtight seal.
• the wheel: which should be cleaned each time a tire is fitted.
• Follow the advice of the vehicle or tire manufacturer, particularly with regards to the conditions of use (loads/speeds etc).

• Check pressures when the tires are cold (tires which have not been used in the last 2 hours or have covered less than 2 miles (3 km) at low speed). 
• If tires are hot when they are checked, add 4 to 5 psi (0.3 bar) to the pressure recommended by the vehicle manufacturer. Re-check the pressures when the tires are cold.
• Never deflate a hot tire.
• Even if tires are inflated with nitrogen, the pressures and overall tire condition must still be checked frequently.

A correctly inflated tire improves safety, is more economical in use and is better for the environment.

car edito tyre pressure small help and advice

By keeping your tires at their correct pressure, you’ll reduce your running costs. Under-inflated tires are prone to overheating use more fuel and wear out more quickly. Likewise, over inflation can reduce tire life, reduce grip and cause steering problems.

 WEAR
A tire which is 20% under-inflated can give 20% less mileage. That means a loss of 5,000 miles (8,000 km) on a potential mileage of 25,000 miles (40,000 km).

• FUEL CONSUMPTION AND CO2 EMISSIONS.
Low tire pressure increases both fuel consumption and CO2 emissions.

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