Tyres - Tread Wear Indicators; Wheel Bolts - Volvo V40 Cross Country Owner's Manual

09 Wheels and tyres
09

Tyres - tread wear indicators

A tread wear indicator shows the status of the
tyre's tread.
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 the tyre's tread depth
is down to 1.6 mm, the tread depth 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 - speed ratings (p. 317)
•
Tyres - air pressure (p. 322)
•
Tyres - direction of rotation (p. 312)
*
314
Option/accessory, for more information, see Introduction.

Wheel bolts

Wheel bolts are used to fasten the wheels at
the hubs and are available in different ver-
sions.
Low wheel bolt
High wheel bolt
Locking wheel bolts
Tightening torque
•
Type 1 wheel bolt (steel rim): 110 Nm
•
Type 2 wheel bolt (aluminium rim): 130
Nm
•
Type 3 Lockable wheel bolt (steel/
aluminium rim): 110 Nm
Only use rims that are tested and approved
by Volvo and which are Volvo genuine acces-
sories. Check the torque with a torque
wrench.
Locking wheel bolts*
Locking wheel bolts can be used on both alu-
minium and steel rims. Under the cargo area
floor there is space for the sleeve for the lock-
able wheel bolts.
Related information
•
Wheel and wheel rim dimensions (p. 316)