lug pattern MERCEDES-BENZ SLC-Class 2017 R172 Owner's Manual

Weight of optional extras
The combined weight of those optionalextras
that weigh more than the replaced standard
parts and more than 2.3 kg (5 lbs) .These
optiona lextras, such as high-performance
brakes ,levelc ontrol, aroof rack or ahigh-per-
formance battery ,are not included in the curb
weight and the weight of the accessories.
TIN (Tire Identification Number)
This is aunique identifier which can be use dby
at ire manufacturer to identify tires, for example
for aproduct 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 gindex
The loa dbearing index (also loa dindex) is acode
that contains the maximu mloadb earing capa-
city of atire.
Traction
Tractio nisthe result of friction between the tires
and the road surface.
Treadwear indicators
Narrow bars (tread wea rbars )that are distrib-
uted over the tire tread. If the tire tread is level
with the bars ,the wea rlimi tofá in (1.6 mm)
has been reached.
Occupant distribution
The distribution of occupants in avehicl eatt heir
designated seating positions.
Total load limit
Nomina lloada nd luggag eloadp lus6 8k g
(150 lbs) multiplied by the number of seats in
the vehicle.
Changing awheel
Flat tire
The "Breakdown assistance" section
(Ypage241) contains information and notes on
how to dealw ithaflat tire. Informatio nondriv-
ing with MOExtended tires in the event of aflat
tire can be found under "MOExtended tires (tires
with run-fla tcharacteristics" (
Ypag e242).
Rotating the wheels
GWARNING
Interchanging the front and rear wheels may
severely impair the driving characteristics if
the wheels or tires have different dimensions. The whee lbrakes or suspension components
may als obedamaged. There is arisk of acci-
dent.
Rotate front and rear wheels only if the wheels and tires are of the same dimensions.
!On vehicles equipped with atire pressure
monitor, electronic components are located
in the wheel.
Tire-mounting tools should not be use dnear
the valve .This coul ddamage the electronic
components.
Only have tires changed at aqualified spe-
cialist workshop.
Always pay attention to the instructions and
safety notes when changing awheel
(
Ypag e275).
The wea rpatterns on the front and rear tires
differ, depending on the operating conditions.
Rotate the wheels before aclearw earp attern
has formed on the tires. Front tires typically
wea rmore on the shoulders and the rear tires in
the center.
On vehicles that have the same size front and
rear wheels, you can rotate the wheels accord-
ing to the interval sinthe tire manufacturer's
warranty book in you rvehicl edocuments. If no
warranty book is available,t he tires should be
rotated every 3,000 to 6,000 mile s(5,000 to
10,000 km) .Depending on tire wear, this may
be required earlier. Do not change the direction
of whee lrotation.
Clean the contact surfaces of the whee land the
brake disc thoroughly every time awhee lisr ota-
ted. Check the tire pressure and, if necessary,
restart the tire pressure loss warning system or
the tire pressure monitor.
Directio nofrotation
Tires with aspecified direction of rotation have
additiona lbenefits, e.g. if there is arisk of hydro-
planing. These advantages can only be gained if
the tires are installed corresponding to the
direction of rotation.
274Changing awheel
Wheels and tires