Tire Inflation Pressure - Mercedes-Benz E320 Operator's Manual

Tire Inflation Pressure

A table (see fuel filler flap) lists the tire
inflation pressures specified for
Mercedes-Benz recommended tires as
well as for the varying operating
conditions.
Important!
Tire pressure changes by approx. 1.5
psi (0.1 bar) per 18°F (10°C) of air
temperature change. Keep this in mind
when checking tire pressure inside a
garage - especially in the winter.
Example:
If garage temperature = approx. +68°F
(+20°C) and ambient temperature =
approx. +32°F (0°C) then the adjusted
air pressure = specified air pressure +3
psi (+0.2 bar).
Tire pressures listed for light loads are
minimum values offering high driving
comfort. Increased inflation pressures
for heavy loads produce favorable
handling characteristics with lighter
loads and are perfectly permissible.
The ride of the vehicle, however, will
become somewhat harder.
Tire temperature and pressure
increase with the vehicle speed. Tire
pressure should therefore only be
corrected on cold tires. Correct tire
pressure in warm tires only if pressure
has dropped below the pressure listed
in the table and the respective
operating conditions are taken into
consideration.
An underinflated tire due to a slow
leak (e.g. due to a nail in the tire) may
cause damage such as tread
separation, bulging etc.. Regular tire
pressure checks (including the spare
tire) at intervals of no more than 14
days are therefore essential.
If a tire constantly loses air, it should
be inspected for damage.
Warning!
Do not overinflate tires.
Overinflating tires can result in
sudden deflation (blowout) because
they are more likely to become
punctured or damaged by road
debris, potholes etc.. Follow recom-
mended inflation pressures.
Do not overload the tires by
exceeding the specified vehicle
capacity weight (as indicated by the
label on the driver's door latch post).
Overloading the tires can overheat
them, possibly causing a blowout.
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