2014 AUDI A7 tire size

140 Safety belts
Safety belts
General notes
Always wear safety belts!
Wearing safety belts correctly saves lives!
This chapter explains why safety belts are nec­
essary, how they work and how to adjust and
wear them correctly .
.. Read all the information that follows and
heed all of the instructions and WARNINGS.
A WARNING
Not wearing safety belts or wearing them
improperly increases the risk of serious
personal injury and death.
- Safety belts are the single most effective
means available to reduce the risk of se­
rious injury and death in automobile acci­
dents. For your protection and that of
your passengers, always correctly wear
safety belts when the vehicle is moving.
- Pregnant women, injured, or physically
impaired persons must also use safety
belts . Like all vehicle occupants, they are
more likely to be seriously injured if they
do not wear safety belts. The best way to
protect a fetus is to protect the mother -
throughout the entire pregnancy.
Number of seats
Your Audi has a total of four seating positions: two in the front and two in the rear. In some
vehicles, there are five seating positions: two in the front and three in the rear. Each seating
position has a safety belt.
A WARNING
Not wearing safety belts or wearing them
improperly increases the risk of serious
personal injury and death.
- Never strap more than one person, in­
cluding small children, into any belt.
It is
especially dangerous to place a safety
belt over a child sitting on your lap. -
Never let more people ride in the vehicle
than there are safety belts available.
- Be sure everyone riding in the vehicle is
properly restrained with a separate safe­
ty belt or child restraint.
~ Safety belt warning light
Your vehicle has a warning system for the
driver and front seat passenger (on USA mod­
els only) to remind you about the importance
of buckling-up.
Fig. 150 Safety belt warning light in the instrument
cluster -enlarged
Before driving off, always:
.. Fasten your safety belt and make sure you
are wearing it properly.
.. Make sure that your passengers also buckle
up and properly wear their safety belts.
.. Protect children with a child restraint sys-
tem appropriate for the size and age .
The warning light . in the instrument cluster
lights up when the ignition is on as a reminder
to fasten the safety belts. In addition, you will hear a warning tone for a certain period of
time .
Fasten your safety belt and make sure that
your passengers also properly put on their
safety belts.
A WARNING
-- Safety belts are the single most effective
means available to reduce the risk of se­
rious injury and death in automobile acci­
dents. For your protection and that of
your passengers, always correctly wear
safety belts when the vehicle is moving.

198 Intelligent technology
@ Tips
-ABS and ASR on ly work correctly when
all four wheels are equipped w ith identi­
ca l tires. Different tire sizes can lead to a
reduct ion in engine power.
- You may hear noises when the systems described are working.
Switching on and off
- If the indicator light DJ or til] (USA
mode ls)/ [I] (Canada models) appears,
there may be a malfunction
¢ page 20 ,
¢page 19.
ESC turns on automatically when you start the engine.
Fig. 18 2 Cent er co nsole, f). O FF bu tton
ESC levels
Sport mode on
The following situations are exceptions where
it may be usefu l to switch on sport mode to
allow the wheels to sp in:
- Rocking the vehicle to free i t when i t is st uck
- Dr iving in deep snow or on loose g round
- Driving with snow chains
Sport mode off
Beha vio r
The ESC a nd ASR stabilization fun ct ions The fu ll stabilization function o f the ESC
are limited¢ .&,.
Op eration Pr ess the 1.$ O FFI button .
Indicato r I) turns o n.
lights
Driv er mes- Stabiliza tion control (ESC ): Sport.
sage s Warning! R educed stability
,8. WARNING
You should only switch sport mode on if
your driving abilities and road cond itions
permit.
- The stabilization function is limited
when sport mode is sw itched on. The
dr iv ing whee ls could spin and the vehicle
cou ld swe rve, especially on slick or slip­
pery road surfaces .
{D) Tips
-Sport mode cannot be switched on when
adaptive cruise control* is switched on.
-
and ASR is availab le again .
Press the
1 .$ O FF I button again.
fl tu rns off.
Stabilization c ontrol (ESC ): On
- If the rear spo iler system malf unct ions,
s port mode may no t switch on o r it may
sw it c h off ag ain autom atically.

202 Intellig ent technol ogy
Tire chain s
Where t ire cha ins are mandatory on certain
roads, this normally a lso applies to vehicles
with a ll- wheel drive
c::> page 259, Snow
chains .
Replacing wheels /t ir es
Vehicles with all-whee l drive must a lways
have tires of the same size. Also avoid t ires
with different tread depths. For details see
page
c::> page 2 54, New tires and replacing
tires and wheels.
Off -Ro ad dri ving?
Your Aud i does not have enough ground clear­
ance to be used as an off -road veh icle.
It is
therefore best to avoid rough tracks and un ­
even terrain as much as possible . Also refer to
c::> page206.
A WARNING
Always adjust your driving to road and traf­
fic condit ions. Do not let the extra safety
afforded by all-wheel dr ive tempt you into
taking extra r isks.
- Although the all-wheel dr ive is very ef­
fective, always remember that braking capacity is limited by t ire traction . You
should the refore not dr ive at excessive
speeds on icy or slippery road su rfaces.
- On wet road surfaces, be careful not to
dr ive too fast because the front wheels
cou ld beg in to s lide on top of the w ater
(aquaplaning) .
If this should occ ur, you
wi ll have no warning from a sudden in ­
crease in engine speed as with a front­
wheel drive vehicle. A lways drive at
speeds wh ich are suited to the road con­
ditions -risk of crash.
Energy management
Starting ability is optimized
Energy management controls the distribution
of electrical energy and thus optimizes the
availability of electrical energy for starting the engine.
If a vehicle with a conventional energy system
is not driven for a long per iod of t ime, the bat­
tery is discharged by idling current consumers (e .g. immobilize r). In certa in circumstances it
can resu lt in the re be ing insufficient energy
available to start the engine.
Intelligent energy management in your vehi­
cl e ha ndles the distribution of e lectr ica l ene r­
gy . Start ing ability is ma rkedly improved and
the life of the battery is extended .
Bas ica lly, energy management consists of
b att ery diagn osis, idlin g current manage ­
m ent
and dynamic en erg y manag em ent .
Battery di agnosis
Battery diagnosis continuously determines
the state of the battery. Sensors determine
battery voltage, battery cu rrent and battery
tempe rature. This determines the current
state o f charge and the power of t he battery .
Idling current management
Idling current management reduces energy
consumption while the vehicle is standing .
With the ig nition sw itched
off, it controls the
energy supply to the various electri ca l compo ­
nents. Da ta from ba ttery diagnos is is cons id ­
ered.
Depend ing on the batte ry's state of cha rge,
individual cons ume rs a re g radually turned
off
to prevent excessive discharge of the battery
and th us maintain starting capability.
Dynamic energy manag ement
While the vehicle is being d riven, dynamic en­
ergy ma nagement distr ibutes the energy gen­
era ted a ccord ing to t he needs of the individ u-
al components .
It regula tes consumption, so
t h at more electrical energy is not being used ..,.

Groove
means the space between two adjacent tread
ribs.
Load rating (code)
means the maximum load that a tire is rated
to carry for a given inflation pressure. You
may not find this information on all tires be­
cause it is no t req uired by law.
Maximum load rating
means the load rating for a t ire at the max i­
mum permissible inflation 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 inflation 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 occupants in a vehicle.
Outer diameter
means the overa ll diamete r of an inflated new
tire.
Overall width
means the linear distance between the exteri­
ors of the sidewalls of an inflated tire, includ ­
in g elevations due to labeling, decorations, or
protective bands or ribs.
Ply
means a layer of rubber-coated parallel cords.
Tires and wheels 245
Production options weight
means the combined weight of those installed
regular production options we ighing over 5
lbs. (2.3 kg) in excess of those standard items
which they replace, not previously considered
in curb weight or accessory weight, including
heavy duty brakes, ride levelers, roof rack,
heavy duty battery, and spec ial tr im .
Radial ply tire
means a pneumatic tire in which the ply cords
that extend to the beads are laid at substan­
tia lly 90 degrees to the center line of the
tread .
Recommended inflation pressure
see ¢ page 244, Cold tire inflation pressure.
Reinforced tire
means a t ire design to operate at higher loads
and at h igher inflation pressures than the cor­
re sp onding standard tire. Reinforced tires
may be identified as "XL", "xl", "EXTRA LOAD",
or "RF" on the sidewa ll.
Rim
means a metal support for a tire or a t ire and
tube assembly upon which the tire beads are
seated.
Rim diameter
means nom inal diameter of the bead seat. If
you change your wheel s ize, you will have to
purchase new tires to match the new rim di­
ameter.
Rim size designation
means r im diameter and width .
Rim width
means nominal distance between rim flanges .
Sidewall
means that portion of a tire between the
tread and bead.
•
•

Tires and wheels 247
Occupant loading and distribution for vehicle normal load fo r various d esignated seat ing
capaci tie s
Designated seating capacity , Vehicle normal load , number Occupant distribution in a nor-
number of occupants of occupants mally loaded vehicle
4 2 2 in front
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.
Fig. 2 00 Tire pressu re lab el: located o n drive r's side B­
p ill ar
Tire pressure generally refers to the amo unt
of air in a t ire that it needs it to do its job and
safely car ry the combined load of the entire
vehicle and its contents . T ire pressure is
measured in kilopascals (kPa) , the interna ­
tional measu ring unit and in pounds per
s quare inch (PSI). Tire p ressure is based in
part on the vehicle's design and load limit -
the greatest amount of weight that the vehi ­
cle can carry safely and the t ire size . The prop­
er tire pressure is frequent ly referred to as the
" recommended cold tire inf lation pressure ."
Air in the tires expands when the ti re heats up
beca use of internal fri ct ion when it flexes in
use. The tire p ressure is higher when the tire
has warmed up than when it is "cold ." It is the
inflat ion p ressure in a "cold" ti re that counts.
Therefore, you should never let air out of a
warm tire to match "cold tire inflation p res­
sure" recommendations. The t ires would then
be underinflated and could fail suddenly .
Maintaining proper tire pre ssure is one of the
most important things you can do to help
avoid sudde n tire failure . Underinflated t ires
are a majo r cause of sudden tire failure . Keep­
i ng tires at the r ight pressure is also impor-
-"' --~ -- ,e
• (:::=~. ~: I =: I :,.. I)( ::: ) l3 n,........,..,.__...,~ ........ ....,_...... • ... _ .. , ....................................... ..,_ "" ..
-""u
--
-...........
- KPA. a PSI
-KPA. a PSI
-KPA. a PSI
Fi g. 201 Ti re pres sure label
tant for safe and respons ive ve hicle hand ling,
tra ction, braking and load carrying.
Tir e pre s­
sure s are parti cul arly important when the
v ehicle i s being dr iven at higher sp eed s, and
then e speciall y when hea vily loaded even
withi n the pe rmissible load -carrying capaci­
t ies app roved for your veh icle .
The recommended t ire pressures for your Audi
depend on th e kind of tires on your vehicle
and the n umber of passengers and/or amount
of luggage you will be transporting.
The tire pressure label is located on the driv­
er 's side B-pillar. The tire pressure labe l lists
the recommended cold tire inflat ion pressures
for the vehicle at its maximum capacity
weight and tires that were on your veh icle at
the time it was manufactured .
If you wish to imp ro v e co mfort when operat­
ing the vehicle at normal lo ad (up to 2 /3*
occup ants ), you can adju st ti re pres sures to
those specified for normal v ehicle load . Be­
fore operating the vehicl e at maximum load ,
you must increase th e tire pre ssu res to tho se
spe cified for maximum v ehicl e load
¢ ,&. . IJi,,-

248 Tires and wheels
Bear in mind that the tire press ure monitoring
system* can only monitor the tire pressures
you have stored . The system does not recog ­
n ize the load condit ion of yo ur vehicle.
T he effectiveness of the tire p ressu re monitor ­
ing system * will be impaired if you store nor­
mal load pressures but the n operate the vehi ­
cle at its max imum load
c:> &. .
See the i llustra tion c:> fig. 2 00 for the location
of the la b el on dr iver's side B-pillar (co lor of
the act ua l labe l and exact location on the ve ­
h icle w ill vary slig htly).
Model / Tire designation
Note that the fo llowing ta ble is acc urate at
t h e time of going to press and is s ubject to
c h ange . In the event of d iscrepancies, the t ire
pressure label is located on the d river's side B­
pillar always takes precedence.
T he table below lists t he recommen ded cold
t ir e inflat ion pressu res for the Audi mode l
cove red by your Owner's Lite rat ure at the vehi ­
cle's capacity weig ht and the t ire sizes instal­
l ed on the respective models as or ig inal
equipmen t, or as a factory opt ion.
Tire pressure
Engine normal load condition full load condition
fronta > reara
>
front rear
PSI kPA PSI kPA PSI kPA PSI kPA
A7 : 235/55 Rl 7 99Y
32 220 29 200 35 240
38 260 3.0 liter High Performance
6-cylinder 255/45 R18 99H
All Season
3 2 2 20 29 200 35 24 0 3 8 260
255/45 Rl8 99Y 32 220 29 200
35 2
4 0
38 260
High Perfo
rmance
255 /40 R19 lOOH XL
35 240 32 220 38 260 280 All Season 4 1
255/40 Rl9100YXL
36 2 50 32 220 38 260 41 280 High Performance
265/35 R20 99H XL
35 240
32 220 38 260 41
280 All Season
265 /35 R20 99Y XL
36 250 32 22 0 38 26 0 41 280 High Performance
S7: 255/40 Rl9 lOOY XL
39
270
33 230
42 290 42 290 4.0 liter High Performance
a-cylinder 265/35 R20 99V XL
High Performance
41 280 35 240 44 300 44 300
XL= reinforced or extra load tire. It may also appear as xl, EXTRA LOAD, or RF on the tire side-
wall.
al no
rm al load co ndi tio n r:::., page 24 7.
The correct tire pressure for the spare wheel is
l ocated o n a label o n the dr ive r's side B -pillar .
Because technical changes may be made to
ve hicle equ ipment dur ing the model year, a l­
ways compare the tire size designation on the
tire pressure labe l on your vehicle w it h the t
ires on you r vehicle. Make sure that the tire
s ize informa tion on the vehicle labe l is the
same as the size o f the tires on the veh icle .

254 Tires and wheels
Unbalanced wheels must be rebalanced to
avoid excessive wear on steering, suspension
and tires. A wheel must also be rebalanced
when a new tire is installed .
Incorrect wheel alignment
Incorrect wheel alignment can cause exces­
sive tire wear, impairing the safety of the vehi­
cle. If tires show excessive wear, have the
wheel alignment checked by an authorized Audi dealer or qualified workshop.
All-wheel drive
Vehicles with quattro must always have tires
of the same size, construction and tread type .
For details see
~page 201.
A WARNING
Sudden tire failure can lead to loss of con­
trol, a crash and serious personal injury!
- Never drive a vehicle when the tread on
any tire is worn down to the wear indica­
tors.
- Worn tires are a safety hazard, they do
not grip well on wet roads and increase
your risk of"hydroplaning" and loss of control.
- Always keep chemicals that can cause
tire damage, such as grease, oil, gasoline
and brake fluid away from t ires.
- Tires age even if they are not being used
and can fail suddenly, especially at high
speeds . Tires that are more than 6 years
old can only be used in an emergency
and then with special care and at lower
speeds.
- Never mount used tires on your vehicle if
yo u are not sure of their "previous histo­
ry." Old used tires may have been dam­
aged even though the damage cannot be
seen that can lead to sudden tire failure
and loss of vehicle control.
New tires and replacing tires and wheels
New tires and wheels have to be broken in .
Fig. 204 Tire specificat ion codes on the s idewall of a
tire
No. Description
@ Nominal w idth of tire in millimeters
® Ratio of height to width (aspect ratio)
© Radial
® Rim diameter code
® L oad index and speed rating
(J) U.S . DOT tire identification number
® Audi Original tire
® Sever snow conditions
@ Tire ply composition and materials
used
@ Maximum load rating
@ Treadwear, traction and temperature
grades
@ Maximum permissible inflation pres-
sure
The tires and rims are essential parts of the
vehicle 's design . The tires and rims approved
by Audi are spec ially matched to the charac­
teristics of the vehicle and can make a major .,..

256 Tire s and wheel s
T up to 118 mph (190 km/h)
U up to 124 mph (200 km/h)
H up to 130 mph (210 km/ h)
V up to 149 mph (240 km/h)
1l
Z over 149 mph (240 km/h)ll
W up to 168 mph (270 km/h)ll
Y up to 186 mph (298 km/h)l)
Your veh icle is norma lly fac to ry equipped with
tires , which possess excellent driving charac­
teristics and give yo ur Audi opt imum driving
comfort . An e lectronic speed limit er
c:> page 31 wi ll normally prevent your vehicle
from go ing faster th an the tire speed rating
c:> & .
U.S . DOT Tire Identification Numb er (TIN )
a nd tire manufacture d ate
This is the t ire's "serial number". It begins
with the letters "DOT" and indicates that the
tire meets all federal standards . The next two
numbers or letters indicate the p lant whe re it
was manufactured, and the last four numbers r epresent the week and year of manufacture.
F or example, the numbers 2213 mean the ti re
was p roduced in the 22nd week of 2013. The
other numbers are marketing codes that may
or may not be used by the ti re manufacturer .
T his informat ion is used to contact consumers
if a tire defect requires a recall.
Aud i Original tire
Tires wi th the ident ification "AO" or "RO" have
been specially matched with your Audi . We
recommend using only these tires because
they meet the highest standards regard ing
safety and driving character istics when used
correctly . Your authorized Audi dealer will
gladly prov ide you with more information .
Tire ply composition and materials u sed
The number of p lies ind icates the number of
layers of rubber-coated fabric in the t ire. In
general, the greater the number of plies, the mo re weight a tire can support . Tire ma nufac -
ll F t· "t h . or ires w 1 a m ax im um s pee d ca pabil ity ove r
1 4 9 mp h (240 k m/h) , t ir e m anufa ctur ers somet imes
use the letters " ZR."
turers also must indicate the mate rials in the
tire, which incl ude stee l, nylon, po lyester, and
others .
Maximum Load Rating
Th is number ind icates the maximum load in
k ilog rams and po unds that can be carr ied by
the tire .
Tire quality grading for treadwear,
traction , and temperature resistance
Tre ad wear, traction and tempera ture grades
c:>page 257 .
Maximum Permissible Inflation Pressure
This number is the greatest amount of a ir
pressure tha t should ever be put in the tire
u nder norm al driv ing cond it ions .
_& WARNING
= -
-Using incorrect or unmatched tires and/
or wheels or improper tire and wheel
combinations can lead to loss of control
coll is ion and serio us personal in jury.
'
- Always use ti res, rims and whee l bolts
that meet the specifications of original factory-insta lled tires or other comb ina­
tions that have been specifically ap­ proved by the vehicle manufacturer.
- Tires age even if they are not being used
and can fai l sudden ly, especially at hig h
speeds . Tires that are more than 6 years
old can only be used in an emergency
and then w ith specia l care and at lower
speeds.
- Ne ver mo unt used tir es on your veh icle if
you are not sure of the ir "p revio us histo­
ry." O ld used tires may have been dam­
aged even thoug h the damage cannot be
seen that can lead to sudden tire fa ilure
and loss of vehicle control.
- All fo ur whee ls must be fitted with radial
tires of the same type, size (rolling cir­ cumference) an d the same tread pattern . ..,_