Volvo S60R Automobile User Manual


 
139
Wheels and tyres
General
Tyres with tread wear indicators
Tread wear indicators are
narrow treadless bands
across the width of the tread.
On the side of the tyre are
the letters TWI (tread wear
indicator). When only
1.6 mm of tread remains, this band is clearly
visible. Change the tyres as soon as possible.
Remember that tyres with little tread depth
provide very poor grip in rain and snow.
Winter tyres
Volvo recommends winter tyres with particu-
lar dimensions. These are stated on the tyre
pressure label, see page 141 for its location.
The tyre dimensions are dependent on the
engine variant. When driving on winter tyres,
these must be fitted to all four wheels.
NOTE! Ask a Volvo dealer which rim and tyre
types are most suitable.
Studded tyres
Studded winter tyres should be run in gently
for 500-1000 km so the studs settle properly
into the tyre. This gives the tyre, and especially
the studs, a longer lifespan.
NOTE! The legal provisions for the use of
studded tyres vary from country to country.
Tread depth
Road conditions with ice, slush and low tem-
peratures place considerably higher
demands on tyres than summer conditions. It
is therefore not recommended to drive on
winter tyres that have a tread depth of less
than four millimetres.
Snow chains
Snow chains may only be used on the front
wheels. This also applies to all-wheel-drive
cars.
Never drive faster than 50 km/h with snow
chains. Avoid driving on bare ground as this
wears out both the snow chains and tyres.
Never use quick-fit snow chains as the space
between the brake disks and the wheels is
too small.
Locking wheel bolts
Locking wheel bolts can be used on both alu-
minium and steel rims. If steel rims with lock-
ing wheel bolts are used in combination with
wheel covers then the locking wheel bolts
must be fitted furthest from the air valve. Oth-
erwise the wheel cover cannot be fitted on
the rim.
IMPORTANT!
Use Volvo genuine snow chains or equiv-
alent chains designed for the car model,
and tyre and rim dimensions. Consult an
authorised Volvo workshop.