When to change tyres?
DID YOU KNOW: All tyres being produced, have a marking which indicates when it is time to replace the tyre.
The marking is called a TREAD WEAR INDICATOR (TWI). When the tread level has worn down to a 1.6 mm level, it is time to replace the tyre, as it is both illegal and unsafe to operate on the road at this point.
The other reason why tyres would need to be changed:
The tyre has worn unevenly and can’t be corrected, which results in a noisy ride or the vehicle gives off a vibration.
Tyre that has an unrepairable damage on one or more areas of its construction.