Volvo XC40 2019 Owner's Manual page 528

WHEELS AND TYRES
Tyres
The function of the tyres is to carry load, pro-
vide grip on the road surface, dampen vibra-
tion and protect the wheel from wear.
The tyres greatly affect the car's driving cha-
racteristics. The type of tyre, dimensions, tyre
pressure and speed rating are important for
how the car performs.
The car is fitted with tyres according to the
tyre information sticker found on the driver's
side door pillar (between the front door and
the rear door).
WARNING
A damaged tyre may lead to loss of control
over the car.
Recommended tyres
On delivery, the car is equipped with Volvo
original tyres that have the VOL
the side of the tyres. These tyres are carefully
adapted to the car. In the event of changing
tyres, it is therefore important that the new
tyres also have this marking in order for the
car's driving characteristics, comfort and fuel
consumption to be maintained.
1 There may be deviations for certain tyre dimensions.
526
New tyres
Tyres are perishable. After a few years they
begin to harden at the same time as the fric-
tion capacity/characteristics gradually deterio-
rate. For this reason, aim to get as fresh tyres
as possible when you replace them. This is
especially important with regard to winter
tyres. The last four digits in the sequence
1
marking on
mean the week and year of manufacture. This
is the tyre's DOT marking (Department of
Transportation), and this is stated with four
digits, for example 0717. The tyre is then man-
ufactured in week 07, year 2017.
Tyre age
All tyres older than 6 years old should be
checked by an expert even if they seem
undamaged. Tyres age and decompose, even
if they are hardly ever or never used. The func-
tion can therefore be affected. This applies to
all tyres that are stored for future use. Exam-
ples of external signs which indicate that the
tyre is unsuitable for use are cracks or disco-
louration.
Tyre economy
Maintain the correct tyre pressure.
•
Avoid fast starts, heavy braking and
•
squealing tyres.
Tyre wear increases with speed.
•
Correct wheel alignment is very important.
•
Unbalanced wheels worsen tyre economy
•
and travelling comfort.
The tyres must have the same direction of
•
rotation during their entire service life.
When you change tyres, the tyres with the
•
best tread must be fitted on the rear
wheels to reduce the risk of oversteer dur-
ing heavy braking.
If you drive over kerbstones or deep holes
•
you can damage the tyres and/or wheel
rims permanently.
Tyre rotation
The car has no mandatory tyre rotation. Driv-
ing style, tyre pressure, climate and road con-
dition affect how quickly the tyres age and