Volvo V50 Owner's Manual page 157

07 Wheels and tyres
General
IMPORTANT
Use Volvo genuine snow chains or equiva-
lent chains designed for the car model, and
tyre and rim dimensions. Consult an author-
ised Volvo workshop
Rims and wheel nuts
Standard (1) and bulge acorn (2) wheel nuts
07
Only use rims that are tested and approved
by Volvo and which are Volvo genuine acces-
sories. There are two types of wheel nut, de-
pending on whether the rims are made of
steel or aluminium. Tighten the wheel nuts to
156
90 Nm. Check the torque with a torque
wrench.
IMPORTANT
The wheel nuts should be tightened to
90 Nm. Overtightening can damage the
nuts and the bolts.
Steel rims – standard wheel nuts (1)
Steel rims are normally mounted with the
standard wheel nuts, but the bulge acorn va-
riety may also be used.
WARNING
Never use standard nuts for aluminium
rims. The wheels can come loose.
Aluminium rims – bulge acorn wheel
nuts (2)
Only use the bulge acorn variety of nuts with
aluminium rims. These differ markedly from
other nut types as they have a rotating coni-
cal washer.
NOTE
These nuts may also be used with steel
rims.
Locking wheel nuts
Locking wheel nuts can be used on both alu-
minium and steel rims. If steel rims with lock-
ing nuts are used in combination with wheel
covers, the locking wheel nut should be
mounted on the bolt nearest the air valve.
Otherwise the wheel cover cannot be fitted to
the rim.