Mercedes-Benz SL-Class 2009 Owners Manual - Manual (Page 219)

Tires and wheels
217
R lead to tire failure from being overheated
R adversely affect handling characteristics
Overinflated tires
G Warning!
Follow recommended tire inflation pres-
sures.
Do not overinflate tires. Overinflated tires
can adversely affect handling and ride com-
fort, wear unevenly, increase stopping dis-
tance, and result in sudden deflation
(blowout) because they are more likely to
become punctured or damaged by road
debris, potholes etc.
Overinflated tires can
R adversely affect handling characteristics
R cause uneven tire wear
R be more prone to damage from road haz-
ards
R adversely affect ride comfort
R increase stopping distance
Checking tire inflation pressure
Safety notes
G Warning!
Follow recommended tire inflation pres-
sures.
Do not underinflate tires. Underinflated
tires wear excessively and/or unevenly,
adversely affect handling and fuel econ-
omy, and are more likely to fail from being
overheated.
Do not overinflate tires. Overinflated tires
can adversely affect handling and ride com-
fort, wear unevenly, increase stopping dis-
tance, and result in sudden deflation
(blowout) because they are more likely to
become punctured or damaged by road
debris, potholes etc.
Do not overload the tires by exceeding the
specified load limit as indicated on the Tire
and Loading Information placard on the
driver’s door B-pillar. Overloading the tires
can overheat them, possibly causing a
blowout. Overloading the tires can also
result in handling or steering problems, or
brake failure.
Check the tire inflation pressure at least every
other week.
Check and adjust the tire inflation pressure
when the tires are cold. The tires can be con-
sidered cold if the vehicle has been parked
for at least 3 hours or driven less than 1 mile
(1.6 km).
If you check the tire inflation pressure when
the tires are warm (the vehicle has been
driven for several miles or sitting less than
3 hours), the reading will be approximately
4 psi (0.3 bar) higher than the cold reading.
This is normal. Do not let air out to match the
specified cold tire inflation pressure. Other-
wise, the tire will be underinflated.
Checking tire inflation pressure man-
ually
Follow the steps below to achieve correct tire
inflation pressure:
X Remove the cap from the valve on one tire.
X Firmly press a tire gauge onto the valve.
X Read the tire inflation pressure on the tire
gauge and check against the recom-
mended tire inflation pressure on the Tire
and Loading Information placard on the
driver’s door B-pillar (
Y page 212). If nec-
essary, add air to achieve the recom-
mended tire inflation pressure.
Operation
Z