Volvo 164 Owner's Manual - page 58
SERVICING
WHEELS AND TYRES
General
The car is fitted with pressed steel wheels.
All wheels are accurately balanced. Wheel
ri ms are of size 5'/2 J 15" F.H. The tyres
are 165 SR 15 or 165 HR 15 tubeless.
The maximum permissible speed for 165
SR 15 tyres is 180 kmph (115 mph) and
210 kmph (131 mph) for 165 HR 15.
Radial tyre types should always be used.
Throughout its lifetime, the car tyre should
i f possible have the same direction of rota-
tion. In other words, it should be kept on
the same side of the car all the while in
use. This is of particular importance for
studded winter tyres, since a change in di-
rection of rotation can cause the studs to
l oosen and fall off the tyre.
Studded snow tyres should also have a
running-in period of between 500-1000
km (300-600 miles). During this period
avoid hard driving on bends and high
speeds, also hefty braking and hasty ac-
celerations.
Rapid links must not be fitted since the
space between the brake calipers and
wheel rims will not permit this.
Check the tyres at regular intervals for
damage and abnormal wear, also for
stones which can fasten in the thread.
Have them balanced if necessary. Poorly
balanced wheels will rapidly increase the
wear on tyres as well as make for poor
travelling comfort.
The tyres have a so-called "wear indicator
i n the form of a number of specially pat-
terned sections in the thread. When about
1.5 mm (1/16") is left on the thread in
these sections, these sections show up
and warn the car owner in good time that
the tyre is showing signs of wear.
39 Check the tyre pressure
Make a habit of checking the pressure in
the tyres regularly. The simplest way to do
this is to check the pressure at a service
station while filling up with fuel. See page
67 for the correct air pressure. Do not for-
get the spare wheel when checking the air
pressure.
During driving, the temperature of the tyres
rises and also the air pressure in relation
to the speed of the vehicle and its load.
Normally the air pressure should only be
checked when the tyres are cold. When
the tyres are warm, a change in pressure
should take place only when air must be
pumped into the tyres.
Excessively low air pressure is one of the
most common reasons for tyre wear. Tyres
which are insufficiently inflated also result
i n difficult steering and high fuel consump-
tion. Too high air pressure tends to make
for poor riding comfort.
Be careful when parking the car next to
the pavement not to damage the tires
against the pavement kerb.
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