It is important to maintain and check, at regular intervals, the inflation pressure of all the tyres, including the spare in a vehicle. The frequency of checking should be decided generally on the basis of actual pressure loss experienced for that operation. This must be done before a long drive. However the tyres must not be left unattended for more than a week.
There are two common problems which can occur to a tyre if pressure is not checked properly:
Underinflation is the greatest enemy of a tyre. Reducing front wheel inflation pressure to obtain a softer ride is very unsafe and should never be done! Low air pressure can result in rapid tread wear at the shoulder, over flexing and excessive
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- heat generation, causing premature tyre failure. The effects are not necessarily immediate.
- b. Overinflation:
- Overinflation can also cause serious damage, because a tyre is over stressed when overinflated and cannot absorb road shocks or impacts satisfactorily, thereby increasing its liability to impact damage (concussion). Further, an overinflated tyre is more prone to a cut/snag/puncture and rapid tread wear at the crown. It is dangerous to drive with overinflated tyres since it reduces road holding.
- * Tyre pressure should be checked with a reliable pressure gauge and when the tyres are at a cold temperature.
Tyre wear indicator
As your tyres wear down, their ability to grip the road decreases. Each tyre has what are known as wear bars. These appear at various points around the tyre as bars running through the tread design from one side of the tyre to the other. When your tyres are legally worn out (2/32″) the tread will be at the same level as the tread wear indicators and they will be easily visible. Usually before the tyre gets to this point, they will begin to feel unsafe. If that is the case, it is time to change your tyres.
Cleaning your rim/wheel and tyres regularly is not just an appearance issue – it’s preventative maintenance!
If you allow brake dust to sit on your rim/wheels for a prolonged period of time, it can eat into the coating (if there is one) and pit the metal. Brake dust is made of an adhesive and carbon fibers that come off the brake pad and tiny metal shavings from the rotor. The intense heat and friction generated by the rim/wheels makes this mixture highly corrosive. Because you probably drive every day, more brake dust is constantly being made. Frequent cleaning is the only way to keep your rim/wheels safe.
Noise & Vibration Problem
Do not ignore apparent impacts, pulling, or vibration. This could be an indicator of tyre damage as much as mechanical problems that should be inspected by a professional. If there is a problem with your tyre(s) and the way it has been installed the vehicle will begin to vibrate between 70 and 90 km/h.
Below are the most common (but not the only) causes of noise and vibration problems:
- Tyre/wheel assembly is out of balance
- No hub centric rings on aftermarket wheels
- Incorrect mounting hardware for aftermarket wheels
- Tyre is poorly seated on the rim
- Irregular tyre wear
- Out of round rim
- Out of round tyre