2015 AUDI R8 SPYDER snow chains

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Anti-loc k br aking sy stem (ABS )
ABS prevents the wheels from locking up when
brak ing . T he vehicle can st ill be stee red even dur ­
ing hard braking. App ly steady pressure to the
brake peda l. Do not pump the peda l. A pulsing in
the brake pedal indicates that the system is help­
ing you to brake the vehicle.
Brake assist sy ste m
The brake assist system can decrease braking dis ­
tance. It increases braking power when the dr iver
presses the brake pedal quick ly in emergency sit­
uations. You must press and ho ld the brake pedal
until the situation is over.
Anti -slip regulation (ASR )
ASR reduces engine power when the drive whee ls
begin to spin and adapts the force to the road
conditions. This makes it easier to start, acceler ­
ate and dr ive up h ills.
Electronic diff erential lock (EDL )
The EDL brakes wheels that are spinning and
transfers the drive power to the other drive wheel or wheels if the vehicle is equipped w ith all-whee l
drive*. This function is available up to about 60
mph (100 km/h) .
I n extreme cases , EDL automatically switches off
to help keep the brake on the braked wheel from
overheating . EDL wi ll switch on again automati­
cally when conditions have returned to normal.
A WARNING
- ESC, ABS, ASR and EDL cannot overcome the
laws of phys ics. Th is is especially important
on slippery or wet roads. If the syst ems be­
gin act ing to stab ilize your vehicle, you
sho uld immediately cha nge your speed to
match the roa d and traffic con ditions. Do
not let the increased safety provided by
these systems tempt you to take risks . Do­
ing so wi ll increase the risk of a loss of vehi­
cle contro l, collis ion and serio us personal in­
juries .
- Always adapt your speed to road, traffic and
weather cond it ions. The risk of losing con­
tro l of the veh icle increases when driving
Int ellig ent t echnolo gy
too fast, especially through curves and on
slippery or wet roads, and when dr iving too
close to vehicles up ahead. ESC, ABS, the
brake assist system, EDL and ASR cannot
prevent coll is ions .
- Always accelerate with special care on even,
smooth surfaces such as those that are wet
or covered with ice and snow. The drive
wheels can spin even with these assistance sys tems that cannot always help to reduce
the risk of loss of veh icle control.
(D Tips
- ABS and ASR only wo rk correctly when all
four wheels are eq uipped with ident ical
tire s. Different tire s izes can lead to a reduc­
t ion i n engine power.
- Yo u may hear noises when the systems de­
sc ribed a re wo rking.
- If the ind icator light GJ or II (USA mod­
els) ;tiJ (Canada models) appea rs, there
may be a malfunction~
page 15,
~ page 15.
Switching on/off
ESC turns on automatically when you start the
engine.
SPORT •
Fig . 12 6 Cente r co nsole wit h lJ bu tto n
ESC sport mode
In certain situations, it might make sense to a l­
low some slip. For example:
- Rocking the vehicle to free it when it is st uck
- Driving in deep snow or on loose gro und
- Dr iving with snow chains
135

Intelligent technology
Snow chain s
Where tire cha ins are mandatory on certai n
roads, this normally a lso applies to vehicles with
all-wheel drive
¢ page 194, Snow chains .
Replacing wheels /tires
Vehicles w ith all-whee l drive must a lways have
tires of the same si ze. Also avoid t ires with differ ­
ent tread depths. Fo r deta ils see page
¢ page 186, New tires and replacing tires and
wheels.
Off-Road driving?
Your Audi does not have enough ground clear­
an ce to be used as an off-road veh icle.
It is there ­
fore best to avo id rough tracks and uneven ter­
rain as m uch as possible . A lso re fer to
¢ page 142.
A WARNING
-Always adjust your driving to road and traf­
fic cond itions. Do not let the extra safety af·
forded by all-whee l dr ive tempt you into tak­
ing extra r isks .
- Althoug h the all-wheel dr ive is very effec­
t ive, always remember that brak ing capac ity
is limited by tire tract ion. You should there­
fore not dr ive at excessive speeds on icy o r
slippery road su rfaces.
- On wet road su rfaces, be careful not to drive
too fast because th e front whee ls cou ld be­
gin to slide o n top of the water (aquap lan­
ing).
If t his s hou ld o cc ur , you will have no
warning from a sudde n increase in engine
speed as with a front -whee l drive vehicle .
Always drive at speeds which are s uited to
the road conditions. -ris k of crash.
Energy management
Starting ability is optimized
Energy management controls the distribution of
electrical energy and thus optimizes the availa­
bility of electrical energy for starting the engine.
If a vehicle w it h a conventional energy system is
not drive n for a long per iod of t ime, the battery
is discharged by idli ng cur rent consumers (e.g .
140
immob ili zer). In certain c ircumstances it can re ­
s ul t in the re being insufficient energy available to
start the eng ine.
I ntelligent energy managemen t in your veh icle
hand les the d istribution of electrical energy .
Starting ability is markedly improved and the life
of the battery is extended.
B asically, energy managemen t consis ts of
bat­
tery diagnosi s, idling current management
and
dynamic energy management.
Battery diagnosis
Battery diagnosis continuously dete rm ines t he
st ate of the bat tery. Sensors dete rm ine battery
vo ltage, batte ry cur rent and battery tempera­
ture . This de termines the current state of cha rge
and t he power of the battery.
Idling current management
Idli ng cur ren t management reduces energy con­
sumption whi le the vehicle is s tanding. W it h the
i gni tion swi tched off, it contro ls the energy s up­
ply to the various electrical components . Data
from battery d iagnosis is considered.
Depend ing o n the ba tte ry's st ate of ch arge, indi­
vidual consumers are gradua lly tur ned o ff to pre­
vent excessive discharge of the batte ry and thus
maintain starting capa bility .
Dynamic energy management
While t he ve hicle is being driven, dynamic e ne rgy
m anag eme nt dis trib utes the energy ge nerated
accord ing to the needs of the individ ua l compo ­
nents . It regu lates consumption, so that more
e lectrica l ene rgy is not be ing used than is being
generated and ens ures an optima l state of
c h arge for the battery.
(D Tips
- But even ene rgy management cannot neg­
ate the lim its of physics. Cons ider that the
p ower and life of a batte ry are lim ited.
- If start ing ability is threa tened, you are in ­
formed by a warning ¢
page 141, Driver
notification in the instrument cluster dis ­
play.

Tires and wheels
Ask your authorized Audi dealer or qualified
workshop for permitted
winter tire sizes. Use on­
ly radial winter tires.
Winter tires lose their effectiveness when the
tread is worn down to a depth of 0.157 inch
(4 mm).
Only drive with winter tires under winter condi­
tions. Summer tires handle better when there is
no snow or ice on the roads and the temperature
is above 45 °F (7 °().
Please always remember that winter ti res may
have a lower speed rating than the tires originally
installed on your vehicle at the time it was manu­
factured . Please see¢ page 189, Speed roting
(letter code) for a listing of the speed rat ing let­
ter codes and the maximum speed at which the
t ires can be driven.
The speed rating letter code(¢ page 174) is on
the side wall of the tire ¢page 186.
A WARNING
Winter tires have maximum speed limits that
may be lower than your vehicle's maximum
speed. Always know the maximum speed be­
fore driving off . Never drive faster than the
speed permitted for your specific winter tires .
This will cause damage to the tires leading to
an accident and serious personal injury to you
and your passengers.
A WARNING
Driving faster than the maximum speed for
which the winter tires on your vehicle were designed can cause tire failure including a
blowout and sudden deflation, loss of contro l,
crashes and serious personal injuries. Have
worn or damaged tires replaced immediately.
- Winter tires have maximum speed rating that may be lower than your vehicle's maxi­
mum speed .
- Never drive faster than the speed for which
the winter or other tires installed on your
vehicle are rated.
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A WARNING ,_ -
Always adjust your driving to the road and
traffic conditions . Never let the good accelera ­
tion of the winter tires and all-wheel drive
tempt you into taking extra risks. Always re­
member:
- When braking, an all-wheel drive vehicle
handles in the same way as a front drive ve­
hicle.
- Drive carefully and reduce your speed on icy
and slippery roads, even winter tires cannot
help under black ice conditions.
@ For the sake of the environment
Use summer tires when weather conditions
permit . They are quieter, do not wear as
quickly and reduce fuel consumption.
, Snow chains
Snow cha ins may be fitted only to the rear
wheels , and only to certain tire sizes. Ask your au­
thorized Audi dealer on which tire sizes snow
chains can be used.
The snow chains must have low-profile links and
must not be thicker than 0.53 inch (13 .5 mm) ,
including the lock.
Remove wheel center covers before putting snow
chains on your vehicle ¢Ci) . For safety reasons
cover caps must then be fitted over the wheel
bolts . These are available from authorized Audi
dealers .
A WARNING
Using the wrong snow chains for your vehicle
or installing them incorrectly can increase the
risk of loss of control leading to serious per­
sonal injury .
- Snow chains are available in different sizes.
Always make sure to follow the instructions
provided by the snow chain manufacturer .
- When driving with snow chains, never drive
faster than the speed permitted for your
specific snow chains .
- Always observe local regulations.

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CD Note
-Remove snow chains before driving on roads
not covered with snow to avoid damaging
tires and wearing the snow chains down un­ necessarily.
- Snow chains, which come into direct contact
with the wheel rim, can scratch or damage
it. Therefore, make sure that the snow
chains are suitably covered . Check the posi­
tion of the snow chains after driving a few
yards and correct if necessary. Follow the in­
structions from the snow chain manufactur­
er when doing so.
(j) Tips
Where snow chains are mandatory on certain
roads, this normally also applies to vehicles
with all-wheel drive.
Wheel bolts
Wheel bolts must always be tightened to the
correct torque .
The design of wheel bolts is matched to the fac­
tory installed rims. If different rims are fitted,
the correct wheel bolts with the right length and
correctly shaped bolt heads must be used. This
ensures that wheels are fitted securely and that
the brake system functions correctly.
In certain circumstances, you may not use wheel
bolts from a different vehicle -even if it is the
same model ¢
page 217.
A WARNING
Improperly tightened or maintained wheel
bolts can become loose causing loss of con­
trol, a collision and serious personal injury.
-
- Always keep the wheel bolts and the threads
in the wheel hubs clean so the wheel bolts
can turn easily and be properly tightened.
- Never grease or oil the wheel bolts and the
threads in the wheel hubs. They can become
loose while driving if greased or oiled, even
if tightened to the specified torque.
- Only use wheel bolts that belong to the rim
being installed.
Tires and wheels
- Never use different wheels bolts on your ve­
hicle.
- Always maintain the correct tightening tor­
que for the wheel bolts to reduce the risk of
a wheel loss. If the tightening torque of the
wheel bolts is too low, they can loosen and
come out when the vehicle is moving. If the
tightening torque is too high, the wheel bolts and threads can be damaged and the
wheel can become loose.
CD Note
The specified torque for the wheel bolts is 90
ft lb (120 Nm) with a tolerance of± 7 .4 ft lb
(± 10 Nm) . Torque wheel bolts diagonally. Af­
ter changing a wheel, the torque must be
checked as soon as possible with a torque
wrench -preferably by an authorized Audi
dealer or qualified workshop.
Low aspect ratio tires
Your Audi is factory-equipped with low aspect ra­
tio tires. These tires have been thoroughly tested
and been selected specifically for your model for
their superb performance, road feel and handling under a variety of driving conditions . Ask your au­
thorized Audi dealer for more details.
The low aspect ratio of these tires is indicated by
a numeral of
55 or less in the tire's size designa­
tion. The numeral represents the ratio of the
tire's sidewall height in relation to its tread width
expressed in percentage. Conventional tires have
a height/width ratio of 60 or more.
The performance of low-aspect-ratio tires is par­
ticularly sensitive to improper inflation pres­
sure. It is therefore important that low aspect
ratio tires are inflated to the specified pressure
and that the inflation pressure is regularly
checked and maintained. Tire pressures should be checked at least once a month and always
before a long trip
c> page 179, Checking tire
pressure.
195

Tires and wheels
and tires are compatible with the tire pres­
sure monitoring system. Otherwise the sys­
tem will register a malfunction and a fault message will be displayed. For more infor­
mation, contact your authorized Audi deal­
er.
- For Declaration of Compliance to United
States FCC and Industry Canada regulations
c:> page 218.
Programming a new set of tires
Applies to veh icles: w ith tire pressure monitoring syste m
When driving with a new set of tires, you can pro­
gram them to the tire pressure monitoring sys­
tem using the menu disp lay.
.,. Turn the ignition on .
.,. Select the menu:
Set> Tire pressure > Wheel
change.
.,. Confirm that you would like to begin the pro­
gramming process . The message
Wheel sen­
sors are being initialised. This may take a few
minutes ...
appears in the instrument cluster
display.
You can switch between programmed tire sets at
any time without reinitializing the system.
(D Tips
- If the programming process was not com­
pleted successfully, the message
Wheel
sensors could not be initialised
appears in
the display and them indicator light
turns on. If this happens, repeat the proce­
dure.
- Do not store the tire pressure if there are
snow chains on the tire.
TPMS Tire pressure monitoring system
malfunction
A malfunction can have various causes.
If the [I] warning light in the instrument cluster
flashes for approximately one minute and then
remains continuously illuminated and additional­
ly
the m symbol appears in the display, the tire
pressure monitoring system is not available. The
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text Tire pressure! System malfunction appears
in the display. This can have various causes.
- A wheel sensor or other component may have
fai led.
- During initialization the system has detected
more than 4 wheels on the vehicle, for example
while driving next to another car with a tire pressure monitoring system.
- Audi replacement parts were not used.
- If snow cha ins are being used, system function
can be compromised due to the shielding prop­
erties of the chains .
- The tire pressure monitoring system may not
be available because of a rad io malfunction.
- Transmitters with the same frequency, such as
radio headphones in the vehicle or radio equip­
ment, can cause a temporary disruption of the
system through excessive electromagnetic
fields .
- Eliminate the interference if you can and then
proceed as follows: Turn off the engine for 20
minutes. Then drive another 10 minutes.
If the
warning light comes on again, you should con­
tact your authorized Audi dealer immediately
to have the problem corrected.
- Do not use commercially available tire sealants.
Otherwise, the electrical components of the
tire pressure monitoring system will no longer
work properly and the sensor for the tire pres­
sure monitoring system will have to be replaced
by a qualified workshop.