2014 AUDI R8 SPYDER wheel size

Front airbags
Description of front airbags
The airbag system can provide supplemental
protection to properly restrained front seat
occupants .
Fig. 117 Loca tion of driver airbag: in steering whee l
Fig. 118 Locatio n of front passe nger 's ai rb ag : in th e in­
st rument panel
Your vehicle is equipped with an "Advanced
Airbag System" in compliance w ith United
States Federal Motor Vehicle Safety Standard
(FMVSS) 208 as app licable at the time your
veh icle was manufactured . The safety be lts
fo r the front seats have "pretensioners" that
h e lp to take s lack out of the belt system. The
pretensioners are also activated by the elec ­
tronic control unit for the airbag system.
The fron t safety belts a lso have load limiters
to help reduce the forces applied to the body
in a crash.
The airbag for the driver is in the steer ing
wheel hub¢
fig. 117 and the airbag for the
fro nt passenger is in the instrumen t panel
¢ fig . 118. The genera l location of the airbags
is marked "AIRBAG".
There is a lot you need to know about the air­
b ags in your veh icle. We urge you to read the
A irba g sy stem 115
detailed information about airbags, safety
belts and child safety in this and the other
chapters t hat make up t he owner's literature .
Please be sure to heed the WARNINGS - they
are extremely important for your safety and
the safety of your passengers, especially in ­
fants and small child ren.
A WARNING ,.;;
Neve r rely on airbags alone for protection .
- Even when they deploy, airbags provide
only s upplementa l protect ion.
- Airbag work most effective ly when used
with properly wor n safety belts.
- Therefore, always wear your safety belts
and make sure that everybody in your ve­
hicle is p roperly restrained.
A WARNING
A person on the front passenger seat, es­
pec ia lly infants and sma ll children, will re­
ceive serious i njuries and can even be kil ­
l ed by being too close to the ai rbag when
it inflates .
- Al tho ugh the A dvanced Airbag Sys tem in
your veh icle is designed to tur n off the
front passenger airbag if an infant or a
sma ll child is on t he front passenger
seat, nobody can absolutely guarantee
that deployment under these special
conditions is imposs ible in all conceiva­
ble situat ions that may happen during
the useful life of your veh icle .
- The Advanced Airbag System can dep loy
in acco rdance with the "low risk" option
unde r the U .S. Fede ral Standa rd if a child
that is heav ie r than the typical one-year
old c hild is on the front pas senge r seat
and the other condi tions for airbag de­
p loyment are met .
- For its own safe ty, a c hild sho uld always
ride proper ly restrained for its age and
size .
Advanced front airbag system
-
Your vehicle is equipped with a front Advanced
Airbag System in compliance with United
Ill>

A WARNING
-=
If, in exceptional circumstances, you must
install a forward-facing child restraint on
the front passenger's seat:
- Always make sure the forward-facing
seat has been designed and certified by
its manufacturer for use on a front seat
with a passenger front and side airbag.
-Always follow the manufacturer's in­
structions provided with the child safety
seat or carrier.
- Always move the passenger seat into its
rearmost position in the seat's fore and
aft adjustment range, as far away from
the airbag as possible before installing
the child restraint. The backrest must be
adjusted to an upright position.
- Always make sure that the
PASSENGER
AIR BAG OFF light comes on and stays
on all the time whenever the ignition is
switched on.
(D Tips
Always replace child restraints that were
installed in a vehicle during a crash. Dam­
age to a child restraint that is not visible
could cause it to fail in another collision
situation.
Advanced front airbag system and children
Your vehicle is equipped with an "Advanced
Airbag System" in compliance with United
States Federal Motor Vehicle Safety Standard
(FMVSS) 208 as applicable at the time your
vehicle was manufactured.
The Advanced Airbag system in your vehicle
has been certified to meet the "low-risk " re­
quirements for 3- and 6- year-old children on
the passenger side and small adults on the
driver side. The low risk deployment criteria
are intended to reduce the risk of injury
through interaction with the airbag that can
occur, for example, by being too close to the
steering wheel and instrument panel when
the airbag inflates. In addition, the system
Child Safety 133
has been certified to comply with the "sup­
pression" requirements of the Safety Stand­
ard, to turn off the front airbag for infants up
to 12 months who are restrained on the front passenger seat in child restraints that are list­
ed in the Standard .
Even though your vehicle is equipped with an
Advanced Airbag system, a child should al­
ways ride in the seat properly restrained for
its age and size . The airbag on the passenger
side makes the front seat a potentially dan­
gerous place for a child to ride. The front seat
is not the safest place for a child in a forward­
facing child safety seat .
It can be a very dan­
gerous place for an infant or a larger child in a
rearward-facing seat.
Advanced Airbags and the weight­
sensing mat in the front seat
The Advanced Airbag System in your vehicle
detects the presence of an infant or child in a
child restraint on the front passenger seat us­
ing the weight-sensing mat in the seat cush­
ion and the sensor below the safety belt latch
on the front passenger seat that measures the
tension on the safety belt.
The weight-sensing mat measures total
weight of the child and the child safety seat
and a child blanket on the front passenger
seat. The weight on the front passenger seat
is related to the design of the child restraint
and its "footprint", the size and shape of the
bottom of the child restraint as it sits on the
seat. The weight of a child restraint and its
"footprint" vary for different kinds of child re­
straints and for the different models of the
same kind of child restraint offered by child restraint manufacturers.
The weight ranges for the individual types,
makes and models of child restraints that the
NHTSA has specified in the Safety Standard
together with the weight ranges of typical in­
fants and typical 1 year-old child have been
stored in the control unit of the Advanced Air­
bag System. When a child restraint is being
used on the front passenger seat with a
ll-
•
•

150 Intellig ent technolog y
Snow chain s
Where t ire cha ins are mandatory on certain
roads, this normally a lso applies to vehicles
with a LL-wheel drive
¢ page 204, Snow
chains .
Replacing wheels /t ir es
Vehicles with all-wheel drive must a lways
have tires of the same size. Also avoid t ires
with different tread depths. For details see
page
¢ page 199, 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
¢ page 153.
A WARNING
-Always adjust your driving to road and
traffic conditions. Do not let the extra
safety afforded by all-wheel drive tempt
yo u into taking extra risks.
- 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
will 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 m anagem ent
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 g iven 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 191
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, heavy duty
battery, and special trim.
Radial ply tire
means a pneumatic tire in wh ich 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 190, Cold tire inflation pressure.
Reinforced tire
means a t ire designed to operate at higher
loads and at higher inflat ion pressures than
the corresponding standard tire. Reinforced
tires my be identified as "XL", "xl", "E XTRA
LOAD", or "RF" on the sidewall.
Rim
means a metal support for a tire or a tire and
tube assembly upon which the tire beads are
seated.
Rim diameter
means nom inal d iameter 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 193
Occupant loading and distribution for vehicle normal load for various designated seating
capacities
Designated seating capacity, Vehicle normal load, Normally loaded vehicle,
occupant distribution
number of occupants number of occupants
2 2 2 in front
Cold tire inflation pressure
Tire pressure affects the overall handling, performance and safety of a vehicle.
Fig. 149 Tir e pressure label: located on driver 's s ide B·
pillar
Tire pressure generally refers to the amount
of air in a tire that it needs it to do its job and
safely carry the combined load of the entire
vehicle and its contents . Tire pressure is
measured in kilopasca ls (kPa), the interna­
tional measuring unit and in pounds pe r
square inch (PSI). Tire pressure is based in
part on the vehicle's design and load limit -
the greatest amount of weight that the vehi­
cle can carry safe ly and the t ire size . The prop­
er tire pressure is frequent ly referred to as the
"recommended cold tire inflation pressure."
Air in the tires expands when the tire heats up
because of internal friction when it flexes in
use . The tire pressu re is higher when the tire
has warmed up than when it is "cold ."
It is the
in flat ion p ressure i n a "cold" tire that counts.
Therefo re, you shou ld neve r let air out of a
warm tire to ma tch "cold tire inflat ion pres­
sure" recommendations. The tires would then
be underinflated and could fail suddenly.
Maintaining proper tir e pressure is one of the
most impor tant things you can do to help
avoid sudden tire failure. Underinflated tires
are a ma jor cause of s udden tire failure . Keep·
ing tires at the right pressure is also impor­
tant for safe and responsive vehicle handling,
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&..p0idit,101111-~- -.,...,....- -..... ~ .... ..
-··-­.....
-
-Dlst<:OURS
- KPA.. a PSI
- KPA..
a PSI
- KPA..
a PSI
Fig. 150 Tire pressu re labe l
traction, braking and load carrying. Tire pres­
sures are particularly important when the
vehicle is being driven at higher speeds, and
then especially when heavily loaded even
within the permissible load-carrying capaci­
ties approved for your vehicle.
The recommended tire pressures for your Audi
depend on the kind of tires on your ve hicle
and the number of passengers and/o r amount
of luggage you will be transporti ng.
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 io n pre ssures
for the vehicle at its maximum capacity
weight and tires that were on your veh icle at
t he time it was manufactured.
If you wish to improve comfort when operat­
ing the vehicle at normal load (up to 2 occu­
pants), you can adjust tire pressures to those
specified for normal vehicle load. Before op­
erating the vehicle at maximum load, you
must increase the tire pressures to those
specified for maximum vehicle load
¢ &.
Bear in mind that the tire pressure monitoring
system can only monitor the tire pressures
II>

194 Tire s and wheel s
that are stored . The system does not recog ­
nize the load cond ition of your vehicle.
See the il lustration ~
fig. 149 for the location
of the label on dr iver's side 8-pillar (color of
the actua l labe l and exact location on the ve­
hicle wi LL vary slightly).
Note that the followi ng tab le is accurate at
the time o f go ing to press and is subject to
change. In the event of discrepancies, the tire pressure label on driver's s
ide 8 -pillar always
takes precedence .
T he table below l ists t he recommended cold
t ire inflat ion pressu res for the Aud i mode l
covered by your Owner's Literat ure at the vehi ­
cle's capacity weight and the tir e sizes i nstal­
l ed on the respective models as orig inal
equipment, or as a facto ry option.
I Model / \I Tire designation
Tire pressure front Tire pressure rear I
Engine
normal load full load normal load full load
condition condition condition condition
PSI II kPA PSI II kPA PSI ]I kPA
PSI II kPA
RS: 235/35 R19 91 Y XL 45
310 45 310
4 .2 liter
295 /30 R19 lOOY X L 280
8-c ylin-
305/30 R1 9 102V
XL
der 41
280 41
280
RS: 235/35 R19 91 Y XL 45
5.2 liter 295 /30 R19 l00Y XL 41 280 41
280
10-cyl-
305 /30 R19 102V XL
inder 41 280 41 280
--XL= reinforc ed or extra load tire. It may also a ppear as xl , EXTRA LOAD, or RF on the tire side·
wall.
Because tec hnical changes may be made to
ve hicle equ ipment dur ing the model yea r, a l­
ways compare the tire size designation on the
tire pressure labe l on your vehicle w ith the
tires on your vehicle . Make s ure that the t ire
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 be­
longs to someone else or you bough t the veh i­
cle with different rims/tires or you bought the
ve hicle as a previously owned vehicle .
Remember, your safety and that of your pas­
sengers also depends on mak ing sure that
load limits are not exceeded . Vehicle load in ­
cludes everybody and everything in and on the
vehicle. These load lim its are technically refer­
r ed to as the vehicle 's Gross Vehicle We ight
Rating ("GVWR"). The G ross Ax le Weight Rat­
ing ("GAWR") is the maximum load that can
be applied at each of the vehicle's two axles .
The Gross Vehicle Weight Rating and the
G ross Axle Weight Rating are listed on the safety compl
iance sticker label located on the
driver's side 8-pillar. The tire p ressure labe l on
yo ur Audi lists the max im um combined
weight of all o f the occ upants and luggage or
othe r ca rgo that the vehicle can carry. Fo r the
location of the tire pressure label
~ fig . 149.
A WARNING
Overloading a vehicle can cause loss of ve­
h icle contro l, a crash or other accident, se­
rious personal injury, and even death.
- Carrying more we ight than your veh icle
was designed to carry will prevent the
veh icle from handling properly a nd i n­
crease the risk of a loss of vehicle con ­
trol.
- The brakes on a vehicle that has been
overloaded may not be able to stop the
veh icle w ith in a safe distance.
- Tires on a vehicle that has been overload ­
ed can fail suddenly ca using loss of con­
trol and a crash.

and tires. A wheel must also be rebalanced
when a new tire is installed.
Incorrect wheel alignment
I nco rrect whee l alignment can cause exces­
sive tire wea r, impair ing t he safety of the vehi­
cle. If tires show excess ive wear, have the
wheel alignment checked by an authorized
Audi dealer or qualified workshop.
All-wheel d rive
Only the wheel/tire sizes specified by the
manufacturer may be used on vehicles wi th
all-wheel drive. For details see
<:!) page 149.
A WARNING
Sudden tire failure can lead to loss of con­
tro l, a crash and serious persona l injury!
- Never drive a veh icle when the tread on
any t ire 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"hydrop lan ing" and loss of
co ntrol.
- Always keep chemicals that can cause
tire damage, such as grease, oil, gasoline
and brake fl uid 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 yo ur vehicle if
you 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 s udden tire failure
and loss o f vehicle control.
Tires and wheels 199
New tires and replacing tires and wheels
New tires and wheels hove to be broken in .
Fig. 152 Tir e spec ificat io n codes on t he s idewall o f a
tire
No. De scription
CD Passenger car tire (where applicable)
@ Nomina l width of t ire in mill imeters
® Ratio of height to width (aspect ratio)
© Rad ia l
® Rim diameter code
® Load index and speed rating
(f) U.S. DOT tire identification number
® Aud i O rigina l tire
® Sever snow conditions
@ Tire p ly composi tion and mater ials used
@ Maximum load rating
@ T readwear, tracti on and temperature
grades
@ Maximum permissible inflation pres-
sure
The tires and rims are essentia l parts of the
vehicle 's design . The t ires and rims app roved
by A udi are spec ially matched to the charac­
teristics of the vehicle and can ma ke a major
contr ibu tion to good road holding and safe .,.
•

204 Tire s and wheel s
This also improves the vehicle's braking
performance and reduces stopping distances .
Summer tires provide less g rip on ice and
snow.
W inter t ires (snow t ires) must always be fitted
on all four wheels.
Compat ible tire pressure mon itoring sensors
must be installed on all four winter tires for
the tire pressure monitor ing system to func­
tion properly ~
page 201 .
Ask your authorized Aud i dea le r or qualified
workshop for permitted
wint er tire sizes. Use
on ly radia l wi nte r tires .
W inter t ires lose the ir effectiveness when the
tread is worn down to a depth of 0 .157 inch
(4 mm).
Only drive with winter tires under winter con­
d itions. Summer tires handle better when
there is no snow or ice on the roads and the
temperature is above 45 °F (7 °C).
Please always remember that w inter t ires may
have a lower speed rating than the t ires origi­
na lly installed on your vehicle at the t ime it
was manufactured. Please see~
page 200,
Speed rating (letter code)
for a List ing of the
speed rat ing letter codes and the maximum
speed at wh ic h t he t ires ca n be dr iven .
The speed rating letter code
( ~ page 192) is
on the s ide wall of the tire~
page 199 .
A WARNING
Winter tires have maximum s peed limits
th at may be lowe r than you r vehi cle's m ax­
im um speed. Always know the maxim um
speed befo re d riving off . Never d rive faster
than the speed permitted for your specific
w inte r tires. This will cause damage to the
tires leading to an accident and serious
personal in jury to you and yo ur passen­
gers.
A WARNING
Dr iv ing faster than the maximum speed
for which the w inter t ires on your vehicle
-
were designed can cause t ire fail ure in­
cluding a blowout and sudden deflation,
l oss of contro l, crashes and ser ious per­
sona l injuries. Have worn o r damaged tires
r eplaced immediately .
- W inter tires have maximum speed rating
that may be lower than yo ur vehicle 's
maximum speed.
- Never d rive faster than the speed for
which the w in ter or othe r tires installed
on yo ur vehicle a re rated .
A WARNING
-Always ad just your dr iv ing to the road and
traffic condit ions . Never let the good ac­
ce ler ation o f the w in ter t ires and a ll-wheel
d rive tempt yo u into t aking extra risks. Al­
ways remember:
- W hen braking, an all-wheel drive veh icle
handles in the same way as a front drive
vehicle .
- D rive c arefully and redu ce your spee d on
icy and slippery roads, even w inter t ires
cannot help under black ice conditions .
@ For the sake of the environment
Use summer tires when weather condi­
tions permi t. T hey are qu iete r, do no t wear
as quickly and reduce fuel consumpt ion .
Snow chains
Snow chains may be fitted only to the rear
whee ls, and on ly to certain tire sizes . Ask your
authori zed Aud i dea ler on which tire si zes
snow chains ca n be used .
The snow chains must have low -profi le links
and must not be th icker than 0.53 inch
(13 .5 mm), includ ing the lock.
Remove whee l center covers before putt ing
snow c hains on your vehicle
~ CD . For safety
reasons cover caps must then be f itted over
the wheel bolts. These are available from au­
thorized Audi dea le rs.