wheel AUDI A5 CABRIOLET 2017 Service Manual

Wheel s
Bead separation
means a breakdown of the bond
between components in the bead .
Cord
means the strands forming the
plies in the tire.
Cold tire inflation pressure
means the tire pressure recom­
mended by the vehicle manufac­
turer for a tire of a designated
size that has not been driven for more than a couple of miles (kilo­
meters) at low speeds in the
three hour period before the tire
pressure is measured or adjusted.
Curb weight
means the weight of a motor ve­
hicle with standard equipment in­
cluding the maximum capacity of
fuel, oil, and coolant, air condi­
tioning and additional weight of
optional equipment.
E x tra load tire
means a tire designed to operate
at higher loads and at higher in­
flation pressures than the corre­ sponding standard tire . Extra load
tires may be identified as "XL",
"xl", "EXTRA LOAD", or "RF" on
the sidewal l.
210
Gross Axle Weight Rating
("GAWR ")
means the load-carrying capacity
of a single axle system, measured
at the tire -ground interfaces .
Gross Vehicle Weight Rating
(" GVWR ")
means the maximum total loaded
weight of the vehicle .
Groove
means the space between two ad­
jacent tread ribs .
Load rating (code )
means the maximum load that a
tire is rated to carry for a given in ­
flation pressure. You may not find
this information on all tires be­
cause it is not required by law.
Ma ximum load rating
means the load rating for a tire at
the maximum permissible infla­ tion pressure for that tire.
Ma ximum loaded vehicle
weight
means the sum of :
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight, and
(d) Production options we ight

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Maximum (permissible )
inflat ion pressure
means the maximum cold infla­
tion pressure to wh ich a t ire may
be inflated . Also called "maxi ­
mum inflation pressure ."
Normal occupant weight
means 150 lbs . (68 kilograms)
times the numbe r of occupants
seated in the veh icle up to the to­
tal seating capacity of your vehi­
c le .
Occupant distribution
means distribution of occupants
in a vehicle .
Outer diameter
means the overall diameter of an
inflated new tire .
Overall width
means the linear dis ta n ce be­
tween the exteriors of the side ­
walls of an inflated tire, inc luding
e levations due to labeling, deco­
rations, or protect ive bands or
ribs.
Ply
means a layer of rubber-coated
parallel cords .
Wheels
Production options weight
means the combined weight of
those installed regular production
options weighing over 5 lbs. (2.3 kg) in excess of those standard
items which they replace, not pre­
viously considered in curb weight
or accessory weight , including
heavy duty brakes, ride levelers,
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 substantia lly 90
degrees to the centerline of the
tread .
Recommended inflation
pressure
see c:::> page 210, Cold tire infla­
tion pressure .
Reinforced tire
means a tire designed to operate
at higher loads and at higher in ­
fl ation pressures than the corre­
sponding standard tire. Rein­
forced tires may be iden tified as
"X L" "x l" "EXTRA LOA D" or "RF"
, , ,
on the sidewa ll. ..,
211

Wheels
Rim
means a metal support for a tire
or a tire and tube assembly upon
which the t ire beads are seated .
Rim diameter
means nominal diameter of the
bead seat . If you change your
wh eel size, you will have to p ur­
chase new tires to match the new
rim d iameter .
Rim size designation
means rim diameter and w idth.
Rim width
means nomina l distance between
r im flanges .
Sidewall
means that portion of a t ire be­
twee n the tread and bead .
Speed rating (letter code)
means the speed at which a t ire is
designed to be driven for extend­
ed periods of ti me. The ratings
range from 93 mph (150 km/h)
to 186 mph (298 km/h)
¢ table
on page 2 08 .
You may not find
this information on all tires be­
cause it is not required by law.
The speed rating letter code,
wh ere applicable, is molded on
the tire sidewall and ind icates the
2 12
maximum permissible road
speeds
¢ A in Winter tires on
page 222 .
Tire pressure monitoring
system *
means a system that detects
when one or mo re of a vehicle's
tires a re underinflated and illumi ­
nates a low tire pressure war ning
telltale .
Tread
means that portion of a tire that
comes into contact wi th the road.
Tread separation
means pulling away of the tread
from the tire carcass .
Treadwear indicators (TWI)
means the project ions wi thin the
pr inc ipal grooves designed to g ive
a visua l indication of the degrees
of wear of the tread . See
¢ page 215, Treadwear indicator
for mo re information on meas ur­
ing tire wear.
Uniform Tire Quality Grading
i s a tire informa tion system devel ­
oped by the Unite d States Nation ­
a l Highway Traffic Safety Admin­
istration (NHTSA) that is designed
to help buyers make re lative
..

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comparisons among tires. The
UTQG is not a safety rating and
not a guarantee that a tire will
last for a prescribed number of
miles (kilometers) or perform in a
certain way . It simply gives tire
buyers additional information to
combine with other considera ­
tions, such as price, brand loyalty and dealer recommendations. Un­
der UTQG, tires are graded by the
tire manu facturers in three areas:
treadwear, traction, and tempera ­
ture res istance . The UTQG infor­
mation on the tires, molded into
the sidewalls.
U.S. DOT Tire Identification
Number (TIN)
T his is the tire 's "seria l number" .
It beg ins with the letters "DO T"
and indicates that the tire meets
all federal s tandards. The next
two numbers o r letters indicate
the plant where it was manufac­
tured , and the last four numbers
represent the week and year of
manufactu re . For example,
DOT ... 2216 ...
means that the tire was produced
in the 22nd week of 2016 . The
other numbers are marketing co­ des that may or may not be used
Wheels
by the tire man ufact urer. This in­
formation is used to contact con­
sumers if a tire defect requires a
recall.
Vehicle capacity weight
means the rated cargo and lug­
gage load plus 150 lbs. (68 k ilo ­
grams) times the vehicle's desig­
na ted seating capacity.
Vehicle maximum load on the
tire
means that load on an individual
tire that is determined by dist rib­
uting to each ax le its share of the
maximum loaded veh icle weight
an d div id in g
by two.
Vehicle normal load on the tire
means that load on an individual
tire that is determined by distrib­ uting to each ax le its share of the
curb weight , accessory weight,
and normal occupant weight (dis­
trib uted in acco rdance with
¢ page218) and dividing by two .
Occupant loading and distri ­
bution for vehicle normal load
for various designated seating
capacities
R efer to the t ire inflation pres­
sure label
¢ page 217, fig.181
for the number of seating .,.
213

Wheels
positions. Refer to the table
¢
page 218 for the number of
people that correspond to the ve­
h icle normal load.
New tires or wheels
Audi recommends having all work
on tires or wheels performed by
an authorized Audi dealer or au­
thor ized Audi Service Facility.
These facilit ies have the proper
knowledge and are equipped with
the required tools and replace­ ment parts.
.,. New tires do not yet have the
optimum gripping properties .
Drive carefully and at moderate
speeds for the first 350 miles
(500 km) with new tires.
1>-Use ti res of the same construc­
tion , size (rolling circumference)
and as close to the same tread
pattern as possible on all four
wheels.
1>-0o not replace tires individually.
At least replace both tires on the
same axle at the same time.
1>-Audi recommends that you use
Audi Original Tires. If you would like to use different tires, please
note that the tires may perform
differently even if they are the
same size ¢
.&..
214
1>-Ifyou would like to equip your
vehicle with a tire/rim combina­
tion that is different from what
was installed at the factory, con­
sult with an authorized Audi
dealer or authorized Audi Service Facility before making a pur­
chase ¢,&. .
The spare tire* is different from
the regular tires installed on the
vehicle -for example, if winter
tires or wide tires are installed -
so only use the spare tire* tempo­
rarily in case of emergency and
drive carefully while it is in use. It
should be replaced with a regular
tire as soon as possible.
On
all wheel drive vehicles, all
four wheels must be equipped
with tires that are the same brand and have the same construction
and tread pattern so that the
drive system is not damaged by
different tire speeds . For this rea­
son, in case of emergency , only
use a spare tire* that is the same
circumference as the regular
tires.
! WARNING
- Only use tire/rim combina­
tions and suitable wheel bolts
that have been approved by .,.

CX)
CX)
-N ,.... N
-0
0 l,L
CX)
Audi. Otherwise, damage to the vehicle and an accident
could result.
-For technical reasons, it is not
possible to use tires from oth­
er vehicles -in some cases,
you cannot even use tires from the same vehicle model.
-Make sure that the tires you
select have enough clearance
to the vehicle. Replacement
tires should not be chosen
simply based on the nominal
size, because tires with a dif­
ferent construction can differ
greatly even if they are the
same size. If there is not
enough clearance, the tires or
the vehicle can be damaged
and this can reduce driving
safety and increase the risk of
an accident.
-Only use tires that are more than six years old when abso­lutely necessary and drive
carefully when doing so.
-If you install wheel covers on
the vehicle, make sure they al­ low enough air circulation to
cool the brake system. If they
do not, this could increase the risk of an accident.
Wheels
Tire wear/damage
Fig. 179 Tire profi le: treadwear indica­
tor
Tire wear
Check the tires regularly for wear.
-Inflation pressure that is too low or high can increase tire wear
considerably.
-Driving quickly through curves,
rapid acceleration and heavy
braking increase tire wear .
-Have an authorized Audi dealer
or authorized Audi Service Facili­
ty check the wheel alignment if
there is unusual wear.
-Have the wheels rebalanced if an
imbalance is causing noticeable
vibration in the steering wheel. If you do not, the tires and other
vehicle components could wear
more quickly.
Treadwear indicator
Original equipment tires contain
treadwear indicators in the tread pattern, which are bars that are
215
...

Wheels
1/16 inch (1.6 mm) high and are
spaced evenly around the tire per­ pendicular to the running direc­
tion
¢fig . 179. The letters "TWI"
or triangles on the tire sidewall
indicate the location of the tread­
wear indicators.
The tires have reached the mini­
mum tread depth
l) when they
have worn down to the treadwear
indicators. Replace the tires with
new ones
¢ .&. .
Tire rotation
Rotating the tires regularly is rec­
ommended to ensure the tires
wear evenly. To rotate the tires;
install the tires from the rear axle
on the front axle and vice versa.
This will allow the tires to have
approximately the same length of
service life.
For unidirectional tires, make
sure the tires are installed accord­
ing to the running direction indi­
cated on the tire sidewall
¢page 233.
Hidden damage
Damage to tires and rims can of­
ten occur in locations that are
1> Obey any applicable regulations in your
country.
216
hidden. Unusual vibrations in the
vehicle or pulling to one side may indicate that there is tire damage .
Reduce your speed immediately.
Check the tires for damage. If no
damage is visible from the out­
side, drive slowly and carefully to
the nearest authorized Audi deal­
er or authorized Audi Service Fa­
cility to have the vehicle inspect­
ed.
_&. WARNING
Tread that has worn too low or different tread depths on the
tires can reduce driving safety.
This can especially have a nega­
tive effect on handling, on the
risk aquaplaning when driving
through water, when driving
through curves and when brak­ ing, which increases the risk of
an accident.

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co
.... N
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Tire pressure
Fig. 180 Driver 's side B -pillar : tire pres­
sure label
"' -,,-------------------- ,.
9c:=:=. ~_:: I =:: I :.. I)@ :l! n. ...... _..,_ ... ___ ......, ____ .... _ ..
ui ............... ~-.... ~ .... .... ...
TR IIZI. 00lO TW.PMSIUl'll '""' ONiNSIC)N$ ,...._0UntlUSAN1011
-KPA. . PSI
Fig. 181 Tir e pressur e label
The correct tire pressure for tires
mounted in the factory and for
the spa re tire* is indicated on a la­
bel. The label is located on the 8-
pillar ¢
fig. 180, ¢ fig. 181.
Use the tire press ure specified for
a normal vehicle load when the
vehicle is partially loaded
¢page 218. If driving the vehicle
when fully loaded, you must in­ crease the tire pressure to the
maximum specified pressure¢
A-
Checking/correcting tire
pressure
Wheels
.. Check the tire pressure at least
once per month and also check it before every long drive .
.. Always check the tire pressure
when the tires are
cold. Do not
reduce the pressure if it increas­
es when the tires are warm.
.. Check the label¢
fig. 181 for
the correct tire pressure based on vehicle load.
..correct the tire pressure if nec ­
essary .
.. Vehicles with Tire Pressure Mon­
itoring System*: store the modi­
fied tire pressure in the Infotain ­
ment system ¢
page 226.
.. Check the pressure in the emer­
gency tire* /spare t ire*. Always
maintain the maximum temper­
ature that is specified for the
tire.
A WARNING
-
Always adapt the tire pressure
to your driving style and vehicle
load.
-Overloading can lead to loss of vehicle control and increase
the risk of an accident. Read
217

Wheels
and follow the important safe­
ty precautions in
q page 219,
Tires and vehicle load limits.
-The tire must flex more if the
tire pressure is too low or if
the vehicle speed or load are
too high. This heats the tire up
too much. This increases the
risk of an accident because it
can cause the tire to burst and
result in loss of vehicle con­
trol.
-Incorrect tire pressure in­
creases tire wear and has a
negative effect on driving and
Tire pressure table
Please note that the information
contained in the following table
was correct at the time of print­
ing, and the information is sub­
ject to change. If there are differ­
ences between this information
and the tire pressures specified
on the label on the driver's side 8- pillar, always follow the specifica­
tion on the 8-pillar label
Q page217, fig.180.
218
braking behavior, which in­
creases the risk of an accident.
(D Note
Replace lost valve caps to re­
duce the risk of damage to the
tire valves.
@ For the sake of the environment
Tire pressure that is too low in­
creases fuel consumption.
(D Tips
Audi recommends using the
tire pressure specified for a normal load
q page 218 or for
a full load when the vehicle is
partially loaded .
Make sure that the tire designa­
tion on your tire matches the des­ ignation on the tire pressure label
and the tire pressure table.
The following table lists recom­
mended tire pressures in cold
tires according to the load and the size of the tires installed.

Wheels
Model Tire designation Tire pressure
Engine normal load condition full load condition
(up to 2 occupants)a)
front rear front rear
PSI kPA PSI kPA PSI kPA PSI kPA
AS Cabriolet: 225/50 Rl 7 94H
33 230 30 210 36 250 39 270 2.0 liter All Season
4-cylinder 245/40 Rl8 93H
All Season
35 240 32 220 38 260 41 280
245/45 Rl7 95H 32 220 29 200 35 240 38 260
All Season
255/35 Rl9 96Y
32 220 32 220 35 240
38 260 High Performance
SS Cabriolet: 245/40 Rl8 97Y
39 270 35 240 42 290 44 300 3.0 liter High Performance
6-cylinder
255/35 Rl9 96Y
High Performance
39 270
35 240 42 290 44 300
XL= reinforced or extra
load tire. It may also appear as xl, EXTRA LOAD, or RF on the tire sidewall.
a) 2 people in the front
A WARNING
Please note the important safe­
ty precautions regarding tire pressure
¢ page 217 and load
limits
¢ page 219.
Tires and vehicle load limits
There are limits to the amount of
load or weight that any vehicle
and any tire can carry. A vehicle
that is overloaded will not handle
well and is more difficult to stop. Overloading can not only lead to
loss of vehicle control, but can al­
so damage important parts of the
gi vehicle and can lead to sudden ...... N
~ tire failure, including a blowout
0
0
LL 00
and sudden deflation that can
cause the vehicle to crash.
Your safety and that of your pas­ sengers also depends on making
sure that load limits are not ex­
ceeded. Vehicle load includes ev­
erybody and everything in and on
the vehicle. These load limits are
technically referred to as the vehi­ cle's
Gross Vehicle Weight Rat­
ing
("GVWR").
The "GVWR" includes the weight of the basic vehicle, all factory in­
stalled accessories, a full tank of
fuel, oil, coolant and other fluids plus maximum load. The maxi­
mum load includes the number of..,.
219