Tire inflation: a critical aspect of security

Seven out of ten vehicles on the road in Canada have at least one tire that is either over or underinflated. Considering that the air pressure in the tire supports 95% on the vehicle weight, it is obvious that inflation is a critical aspect of road safety.

Underinflation
Underinflation is a major problem: just one tire underinflated can spell disaster. A tire without enough air causes the whole vehicle to be unstable. Driving becomes more difficult because underinflation increases rolling resistance, especially during winter months when the roads are covered with snow or slush. Not to mention that underinflated tires ride on the sides of the tread only which significantly increases fuel consumption and reduces the life of the tire. Such inadequate wear means reduced grip on the road which in turn means road safety problems.

Overinflation
Overinflation is also a cause for concern. It makes the vehicle more difficult to handle as only the centre portion of the tread touches the ground, which is clearly insufficient and even dangerous. This also causes irregular wear on tires and suspension components.

Be proactive
Since tire inflation is essential for road safety, it is recommended to measure the inflation pressure of your tires at least once a month. Be sure to maintain the manufacturer’s recommended pressure. This information is usually printed on the label attached to the edge of the driver’s door, in the glove box, inside the fuel door or in the owner’s manual.

Be aware also that tires lose pressure when the air temperature gets colder, so it is especially important to check the air pressure in your tires during the winter months, and don’t forget the spare. Use a good-quality gauge sold in a store rather than those available in gas stations, which can be inaccurate. Finally, measure the pressure when your tires are cold, i.e. when the vehicle has been stationary for at least three hours or has not been driven more than 2 km.