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WHEELS AND TYRES
Tyres - tread wear indicators
Tread wear indicators show the status of the
tyre's tread depth.
Tread wear indicators.
A tread wear indicators is a narrow elevation
across the longitudinal grooves of the tyre's tread
pattern. On the side of the tyre are the letters
TWI (Tread Wear Indicator). When the tyre's tread
depth is down to 1.6 mm, the tread will be level in
height with the tread wear indicators. Change to
new tyres as soon as possible. Remember that
tyres with little tread depth provide very poor grip
in rain and snow.
Related information
•
Tyres - dimensions (p. 323)
•
Tyres - speed ratings (p. 324)
•
Tyres - load index (p. 324)
•
Tyres - direction of rotation (p. 321)
322
•
Tyres - maintenance (p. 320)
Tyres - air pressure
Tyres can have different air pressures which are
measured in bar.
Check the air pressure in the tyres
The tyre pressures must be checked every
month.
Check the tyre pressure on cold tyres. "Cold
tyres" means the tyres are the same temperature
as the ambient temperature. After several few kil-
ometres of driving, the tyres warm up and the
pressure increases.
Inadequate tyre pressure increases fuel con-
sumption, shortens tyre lifespan and impairs the
car's driving characteristics. Driving on tyres with
tyre pressure that is too low could result in the
tyres overheating and being damaged. Tyre pres-
sure affects travelling comfort, road noise and
driving characteristics.
NOTE
Tyre pressure decreases over time, this is a
natural phenomenon. Tyre pressure also var-
ies depending on ambient temperature.
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