Tyre pressure is very difficult to judge by sight alone. Tyres can be well under 50% inflated before it’s visually noticeable. This is why it’s so important to check your tyre pressure monthly with an accurate tyre gauge.
Check your tyre pressure every 5000km to keep your vehicle driving smoothly and evenly, and using petrol more efficiently.
Tyres should be inflated when cool to the vehicle manufacturer's recommendations printed on the vehicle door placard or in your vehicle's owner's manual, not the maximum limit stamped on a tyre sidewall.
Rotate your tyres every 10,000km to help equalise tread wear.
Get your wheel alignment checked as specified in your vehicle's owner's manual, or as soon as you feel the wheel "pull."
Visually check your tyres for irregularities in tread wear as these could indicate problems with alignment or inflation.
Every tyre has a code printed on the side wall which provides all the specifications of the tyre. An example is “205/60R15 91V”.
The information in this code breaks down as follows:
- 205 = the width of the tyre in mm
- 60 = The aspect ratio (aka “profile”) of the tyre, calculated as the ratio of the height of the tyre's cross-section (i.e. the distance from the rim to the tread) to its width. The bigger the aspect ratio, the bigger the tyre's sidewall will be
- R = Radial tyre, the most common type of passenger vehicle tyre today
- 15 = The rim diameter in inches
- 91 = Load index service description- V = Speed symbol, denoting the top speed for which the tyre is certified. In this case, the tyre is rated to a top speed of 240km/h.
Premature tyre wear may be caused by many factors other than tyre rotation. Some examples are as follows: improper inflation, driving conditions, misaligned vehicles, and misuse of the vehicle/turning off traction control to cause wheelspin.
When replacing only two tyres on your vehicle, new tyres should always be placed on the rear of the vehicle.