weight MERCEDES-BENZ SL CLASS 2018 User Guide

The greater the combined weight of the occu-
pants, the lower the maximum luggage load.
Step 1
Example 1 Example 2
Combined max-
imum weight of
occupants and
cargo (data
from the Tire
and Loading
Information
placard) 1500 lbs
(680 kg) 1500 lbs
(680 kg)
Step 2
Example 1 Example 2
Number of peo-
ple in the vehi-
cle (driver and
occupants) 1 2
Weight of the
occupants Occu-
pant 1:
175 lbs
(80 kg) Occu-
pant 1:
175 lbs
(80 kg)
Occu-
pant 2:
195 lbs
(88 kg)
Gross weight
of all occupants 175 lbs
(80 kg) 370 lbs
(168 kg)
Step 3
Example 1 Example 2
Permissible
load (maxi-
mum gross
vehicle weight
rating from the
Tire and Load-
ing Information
placar dm inus
the gross
weight of all
occupants) 1500 lbs
(680 kg)

Speed rating The speed rating is part of the tire identification.
It specifies the speed range for which the tire is
approved.
GVW (Gross Vehicle Weight) The gross vehicle weight includes the weight of
the vehicle including fuel, tools, the spare wheel,
accessories installed, occupants, luggage and
the drawbar noseweight, if applicable. The gross
vehicle weight must not exceed the gross vehi-
cle weight rating GVWR as specified on the vehi-
cle identification plate on the B-pillar on the
driver's side.
GVWR (Gross Vehicle Weight Rating) The GVWR is the maximum permissible gross
weight of af ully loaded vehicle (the weight of the
vehicle including all accessories, occupants,
fuel, luggage and the drawbar noseweight, if
applicable). The gross vehicle weight rating is
specified on the vehicle identification plate on
the B-pillar on the driver's side.
Maximu ml oaded vehicle weightThe maximum weight is the sum of: R
the curb weight of the vehicle R
the weight of the accessories R
the load limit R
the weight of the factory installed optional
equipment
Kilopascal (kPa) Metric unit for tire pressure. 6.9 kPa corre-
sponds to 1p si. Another unit for tire pressure is
bar. 100 kilopascals (kPa) are the equivalent of
1b ar.
Load index
In addition to the load-bearing index, the load
index may also be imprinted on the sidewal lo f
the tire. This specifies the load-bearing capacity
more precisely.
Curb weight
The weight of av ehicle with standard equipment
including the maximum capacity of fuel, oil and
coolant. It also includes the air-conditioning sys-
tem and optional equipment if these are instal-
led in the vehicle, but does not include passen-
gers or luggage. Maximu ml oad ratingThe maximum load rating is the maximum per-
missible weight in kilograms or lbs for which a
tire is approved.
Maximu mp ermissible tire pressureMaximum permissible tire pressure for one tire.
Maximu ml oad on one tireMaximum load on one tire. This is calculated by
dividing the maximum axle load of one axle by
two.
PSI (pounds per squar ei nch)As tandard unit of measure for tire pressure.
Aspect ratio Relationship between tire height and tire width
in percent.
Tire pressure This is pressure inside the tire applying an out-
ward force to each square inch of the tire's sur-
face. The tire pressure is specified in pounds per
square inch (psi), in kilopascal (kPa) or in bar.
The tire pressure should only be corrected when
the tires are cold.
Cold tire pressure The tires are cold: R
if the vehicle has been parked with the tires
out of direct sunlight for at least three hours
and R
if the vehicle has not been driven further than
1m ile (1.6 km)
Tread
The part of the tire that comes into contact with
the road.
Bead
The tire bead ensures that the tire sits securely
on the wheel. There are several steel wires in the
bead to prevent the tire from coming loose from
the wheel rim.
Sidewall
The part of the tire between the tread and the
bead.All about wheel sa nd tires 279
Wheels and tires Z

Weight of optional extras The combined weight of those optiona le xtras
that weigh more than the replaced standard
parts and more than 2.3 kg (5 lbs) .T hese
optiona le xtras, such as high-performance
brakes ,l eve lc ontrol, ar oof rack or ah igh-per-
formance battery ,a re not included in the curb
weight and the weight of the accessories.
TIN (Tire Identification Number) This is au nique identifier which can be use db y
at ire manufacturer to identify tires, for example
for ap roduct recall, and thus identify the pur-
chasers. The TIN is made up of the manufactur-
er's identity code, tire size, tire type code and
the manufacturing date.
Load bearin gi ndexThe loa db earing index (also loa di ndex) is ac ode
that contains the maximu ml oa db earing capa-
city of at ire.
Traction Tractio nist he result of friction between the tires
and the road surface.
Treadwear indicators Narrow bars (tread wea rb ars )t hat are distrib-
uted over the tire tread. If the tire tread is level
with the bars ,t he wea rl imi to f