2015 AUDI S3 weight

236 Tires a nd whee ls
Bead Extra load tire
means the part of the tire that means a tire design to operate
is made of steel wires, wrapped at higher loads and at higher
or reinforced by p ly cords and inflation pressures than the
that is shaped to fit the rim . corresponding standard tire .
Bead separation Extra load tires may be identi-
fied as "XL", "xl", " EXTRA
means a breakdown of the bond LOAD", or "RF" on the sidewall.
between components in the
bead .
Gross A xle Weight Rating
(" GAWR ")
Cord
means the load-carrying capaci-
means the strands forming the ty of a single axle system,
p lies in the tire .
measured at the tire-ground in-
Cold tire inflation pressure terfaces.
means the tire pressure recom-
Gross Vehicle Weight Rating
mended by the vehicle manu-( "GVWR ")
facturer for a t ire of a designat-
means the maximum total
ed size that has not been driven loaded weight of the vehicle.
for more than a couple of miles
Groove
(kilometers) at low speeds in
the three hour period before means the space between two
the tire pressure is measured or adjacent tread ribs.
adjusted.
Load rating (code )
Curb weight
means the max imum load that
means the weight of a motor a tire
is rated to carry for a giv-
vehicle with standard equip -en inflation pressure
. You may
ment including the maximum not find th
is information on all
capacity of fuel, oil, and cool- tires because it is not required
ant, air condit ioning and addi- by law.
...
tional weight of optional equip-
ment.

M N
0 > co ,...., \!) 1.1'1
M 1.1'1 ,....,
Maximum load rating
means the load rating for a tire
at the maximum permissible in­
flation pressure for that tire.
Maximum loaded vehicle
weight
means the sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight, and
(d) Production options weight
Maximum (permissible)
inflation pressure
means the maximum cold infla­
tion pressure to which a tire
may be inflated. Also called
"maximum inflation pressure."
Normal occupant weight
means 150 lbs. (68 kilograms)
times the number of occupants seated in the vehicle up to the
total seating capacity of your
vehicle.
Occupant distribution
means distribution of occu­ pants in a vehicle.
Outer diameter
means the overall diameter of
an inflated new tire.
Tires and wheels 237
Overall width
means the linear distance be­
tween the exteriors of the side­
walls of an inflated tire, includ­ ing elevations due to labeling,
decorations, or protective bands or ribs.
Ply
means a layer of rubber-coated
parallel cords.
Production options weight
means the combined weight of
those installed regular produc­
tion options weighing over 5 lbs. (2 . 3 kg) in excess of those
standard items which they re­ place, not previously consid­
ered in curb weight or accessory
weight, including heavy duty
brakes, ride levelers, roof rack,
heavy duty battery, and special
trim.
Radial ply tire
means a pneumatic tire in
which the ply cords that extend
to the beads are laid at sub­ stantially 90 degrees to the
centerline of the tread.
' •
•
' •

Tires and wheels 239
Tread separation UTQG information on the tires,
means pulling away of the molded into the sidewalls.
tread from the tire carcass.
U.S. DOT Tire Identification
Treadwear indicators (TWI) Number (TIN)
'
This is the tire's "serial num-
means the projections within
•
•
the principal grooves designed ber". It begins with the letters
to give a visual indication of the "DOT" and indicates that the
degrees of wear of the tread. tire meets all federal stand-
See
r=>page 252, Tread Wear ards. The next two numbers or
Indicator (TWI) for more infor- letters indicate the plant where
mation on measuring tire wear. it was manufactured, and the
Uniform Tire Quality Grading
last four numbers represent the
week and year of manufacture.
is a tire information system de- For example,
veloped by the United States
DOT ... 2214 ...
National Highway Traffic Safety
Administration (NHTSA) that is means that the tire was pro-
designed to help buyers make duced in the 22nd week of
relative comparisons among 2014. The other numbers are
tires. The UTQG is not a safety marketing codes that may or
rating and not a guarantee that may not be used by the tire
a tire will last for a prescribed manufacturer. This information
number of miles (kilometers) or is used to contact consumers if
perform in a certain way. It a tire defect requires a recall.
simply gives tire buyers addi-
Vehicle capacity weight
tional information to combine means the rated cargo and lug-
with other considerations, such gage load plus 1
SO lbs.
as price, brand loyalty and deal- (68 kilograms) times the vehi-
er recommendations. Under cle's total seating capacity as
UTQG, tires are graded by the listed on the label located on
' M tire manufacturers in three N the driver's side 8-pillar.
•
0 ...
> areas: treadwear, traction, and co ...... \!) 1.1'1 temperature resistance. The M 1.1'1 ......

24 0 Tires a nd whee ls
Vehicle ma ximum load on
the tire
means that load on an individu­
al tire that is determ ined by
distr ibuting to each axle its
share of the maximum loaded
vehicle weight and div iding by
two.
Vehicle normal load on the
tire
means that load on an in div id u­
al t ire that is determ ined by d
istribut ing to each axle its
share of the curb weight, acces ­
sory weight, and normal occ u­
pant weigh t (distributed in ac­
cordance with table below
¢ page 240) and dividing by
two .
Occupant loading and distribution for vehicle normal load for
v arious designated seating capac ities
Designated seating Vehicle normal load, Occupant distribu-
capacity , number of number of occupants tion in a normally
occupants loaded vehicle
5 3 2 in front, 1 in back
seat
Cold tire inflation pressure
Tire pressure affects the overall handling, performance and safety
of a vehicle.
F ig. 16 8 Tire pressure label: locat ed
on driv er's side 8 -pillar
~----------~"'
~--=-==--=~1::.-=--=-•=:- :-,_. SIA COU>lR"f"fU;Sl,R
MW OWE lSlllHS P'RES5l0H OES f'Nall A, FIIICJD
:"" -ICPA. • PSI
.::. -KPA.. . PSI
°'~ -KPA. -PSI
Fig. 16 9 Tire pressure label

Tires and wheels 241
Tire pressure generally refers to tant things you can do to help
the amount of air in a tire that avoid sudden tire failure. Un-it needs it to do its job and derinflated tires are a major
safely carry the combined load cause of sudden tire failure. of the entire vehicle and its con- Keeping tires at the right pres-
' •
•
tents. Tire pressure is measured sure is also important for safe
in kilopascals (kPa), the inter- and responsive vehicle han-
national measuring unit and in dling, traction, braking and
pounds per square inch (PSI) . load carrying.
Tire pressures
Tire pressure is based in part on are particularly important
the vehicles design and load when the vehicle is being driv-
limit - the greatest amount of en at higher speeds, and then
weight that the vehicle can car -especially when heavily loaded
ry safely and the tire size. The even within the permissible
proper tire pressure is frequent-load-carrying capacities ap-
ly referred to as the "recom-proved for your vehicle.
mended cold tire inflation pres-
The recommended tire pres-
sure." Air in the tires expands sures for your Audi depend on
when the tire heats up because the kind of tires on your vehicle
of internal friction when it flex- and the number of passengers
es in use. The tire pressure is and/or amount of luggage you
higher when the tire has will be transporting.
warmed up than when it is The tire pressure label is locat-
"cold." It is the inflation pres-
ed on the driver's side B-pillar.
sure in a "cold" tire that counts.
Therefore, you should never let The tire pressure label lists the
recommended cold tire infla-
air out of a warm tire to match
"cold tire inflation pressure" tion pressures for the vehicle at
its maximum capacity weight
recommendations. The tires
would then be underinflated and tires that were on your ve
-
and could fail suddenly. hicle at the time it was manu-
' M factured
. • N
0 > co Maintaining proper tire pres-
...... \!)
sure is one of the most impor-1.1'1
M 1.1'1 ......

242 Tires and wheel s
If you wish to improve comfort See the illustration c::;, fig. 168
when operating the vehicle at for the locati on of the labe l on
normal load (up to 3 occu -driver's side B-pillar (color of
pants), you can adjust tire the actual label and exact loca-
pressures to those specified tion on the vehic le will vary
for normal vehicle load. Before slight ly) .
operat ing the vehicle at maxi -Note that the following table is
mum load , you must increase accurate at the time of going to
the ti re pressu res to those press and is subject to change .
specified for maximum vehicle In the event of discrepancies,
load c::;, &. the tire pressure labe l is locat-
Bear in mind that the tire pres- ed on the driver's side 8-pi llar
sure monitoring system can on -always takes precedence .
ly monitor the tire pressures The table below lists the rec-
you have stored . The system
ommended cold tire inflation
does not recogn ize the load
pressures for the Audi model
condition of your vehic le.
covered by your Owner's Litera-
T he effectiveness of the tire ture at the vehicle's capacity
pressure monitoring system weight and the tire sizes instal -
will be impaired if you store led on the respective mode ls as
normal load pressures but then original equipment, or as a fac-
operate the vehicle at its maxi- tory option.
...
mum load c::;, & .

244 Tires and wheels
The correct tire pressure for the
spare wheel is located on a la­
bel on the driver's side 8-pillar .
Because technical changes may
be made to vehicle equipment
during the model year, always
compare the tire size designa­
tion on the tire pressure label
on your vehicle with the tires on
your vehicle. Make sure that the
tire size information on the ve­
hicle label is the same as the
size of the tires on the vehicle.
This is especially important if
the vehicle belongs to someone else or you bought the vehicle
with different rims/tires or you bought the vehicle as a previ­
ously owned vehicle.
Remember, your safety and
that of your passengers also de­
pends on making sure that load
limits are not exceeded. Vehicle
load includes everybody and ev­
erything in and on the vehicle.
These load limits are technical­
ly referred to as the vehicle's
Gross Vehicle Weight Rating
("GVWR"). The Gross Axle
Weight Rating ("GAWR") is the maximum load that can be ap­
plied at each of the vehicle's
two axles. The Gross Vehicle Weight Rating and the Gross
Axle Weight Rating are listed
on the safety compliance stick­
er label located on the driver's
side 8-pillar.
The tire pressure
label on your Audi lists the
maximum combined weight of
all of the occupants and lug­ gage or other cargo that the ve­
hicle can carry. For the location
of the tire pressure label
~fig. 168.
A WARNING -
Overloading a vehicle can
cause loss of vehicle control,
a crash or other accident, se­
rious personal injury, and
even death.
-Carrying more weight than your vehicle was designed to carry will prevent the ve­
hicle from handling properly
and increase the risk of a
loss of vehicle control.
-The brakes on a vehicle that has been overloaded may not be able to stop the vehi­
cle within a safe distance.
-Tires on a vehicle that has been overloaded can fail
suddenly causing loss of
control and a crash.

M N
0 > co ...... \!) 1.1'1
M 1.1'1 ......
-Always make sure that the total load being transported - including the weight of a
trailer hitch and the tongue
weight of a loaded trailer - does not make the vehicle heavier than the vehicles
Gross Vehicle Weight Rat­
ing.
_& WARNING
- Incorrect tire pressures
and/or underinflation can
lead to a serious or fatal ac­
cident.
- Incorrect tire pressures
and/or underinflation cause
increased tire wear and can
affect the handling of the
vehicle.
-Incorrect tire pressures and/or underinflation can
also lead to sudden tire fail­ure, including a blowout
and sudden deflation, caus­ ing loss of vehicle control.
Tires and wheels 245
Checking tire pressure
The correct tire pressure for the
tires originally installed on
your vehicle is listed on the tire pressure label located on driv­ er's side 8-pillar.
The recommended tire pres­
sures are on the tire pressure label and in the table
¢ page 240~ Cold tire inflation
pressure.
This means that the
pressure must be checked and
adjusted when the tire has not
been driven for more than a
couple of miles (kilometers) at
low speeds during the previous
three hours. Air in the tires ex­ pands when the tire heats up as
a result of internal friction as it
flexes in use. The tire pressure is higher when the tire has
warmed up than when it is "cold ."
It is the inflation pressure in a
"cold" tire that counts. There­
fore, you should never let air
out of a warm tire to match
"Cold tire inflation pressure" recommendations ¢
page 240.
The tires would then be under­
inflated and could fail sudden­
ly .
...
' •
•
' •