Over inflation of tires can:
- Reduce the ability of the tire to absorb road shocks, resulting in a much harsher ride
- Cause excessive wear of the centre of the tire
Under inflation can:
- Cause excessive flexing in the tire, building up internal heat and causing rapid and irregular tread wear.
- Create more rolling resistance which will have a negative impact on your vehicle’s fuel efficiency.
You can check the correct inflation of your tires by referring to the tire placard, which can usually be found inside the driver’s door, in the glove box or under the bonnet. The placard will also give you other important tire information such as the correct size, speed rating and load capacity of the tires that should be fitted to your car.
Different vehicles will wear their tires at different rates. For example, a front-wheel drive car will wear its tires very differently from a rear-wheel drive. Wagons and utilities – because of the lack of weight over the rear wheels – will also wear at varying rates.
One of the best ways you can look after your tires is by rotating them regularly. Swapping the rear tires to the front and vice-versa ensures that tires wear evenly and last significantly longer. As a guide, tires should be rotated every five to eight-thousand kilometres even if there is no sign of uneven wear.