Maximum load on one tirMaximum load on one tire:e: maximum load on one
tire. This is calculated by dividing the maximum
axle load of one axle by two.
PSI (pounds per sqPSI (pounds per squaruare ince inch):h): standard unit of
measurement for tire pressure.
Aspect rAspect ratio:atio: ratio between tire height and tire
width in percent.
TTirire pre pressuressure:e: pressure inside the tire applying an
outward forceto every square inch of the tire. The
tire pressure is specied in pounds per square
inch (psi), in kilopascals (kPa) or in bar. The tire
pressure should only be corrected when the tires
are cold.
Cold tir
Cold tire pre pressuressure:e: the tires are cold when the
vehicle has been parkedfor at least 3 hours with-
out direct sunlight on the tires or thevehicle has
been driven for less than 1 mile (1.6 km).
TTirire conte contact surfact surface:ace: the part of the tire that
comes into contact with theroad.
TTirire bead:e bead: the purpose of the tire bead is to
ensure that the tire sits securely on the wheel rim.
There are several wire cores in the tire bead to
prevent the tire from changing length on the
wheel rim.
Side wSide wall:all: the part of the tire between the tread
and the tire bead.
WWeight of opeight of optional eqtional equipment:uipment: the combined
weight of the optional equipment weighing more
than thereplaced standard parts and more than
5 lbs (2.3 kg). This optional equipment, such as
high-performance brakes, level control system, a
roof luggage rack or high-performance batteries,
is not included in the curb weight and theweight
of the accessories.
TIN (TTIN (TirireeIdenticationIdentication Number):Number): a unique identi-
cation number which can be used by a tire manu-
facturer to identify tires, forexample, in a product
recall, and thus identify the purchasers. The TIN is
made up of the manufacturer's identity code, tire
size, tire type code and the manufacturing date.
Load-bearLoad-bearing indeing index:x: the load-bearing index is a
code that contains the maximum load-bearing
capacity of a tire.
Tr
Traction:action: traction is thegrip resulting from friction
between the tires and theroad surface.
WWear indicatear indicator:or: narrow bars (tread wear bars) that
are distributed overthe tire contact surface. If the
tire tread is level with the bars, thewear limit of
1/16 in (1.6 mm) has been reached.
DisDistrtribution of vibution of vehicle occupants:ehicle occupants: distribution of
vehicle occupants over designated seat positions
in a vehicle.
Maximum perMaximum permissible paymissible payload wload weight:eight: nominal
load and luggage load plus 150 lb (68 kg) multi-
plied by the number of seats in thevehicle.
Changing a wheelChanging a wheel
NNoottes on selecting, instes on selecting, installing and ralling and replacing tireplacing tireses
*NNOOTETE Mercedes-AMG vehicles
#Observe the notes in the Supplement.
You could otherwise fail to recognize
dangers.
&WWARNINGARNING Risk of accident due to incor-
rect wheel and tire dimensions
If wheels and tires of the wrong size are instal-
led, the service brakes or components in the
Wheels and tires 399399
