2008 AUDI S8 weight

ffl.___T_ r_a _il _e_ r_ t_o _w_ i_ n """g"'- ---------------------------------------------------
Speed
The higher the speed, the more difficu lt it becomes for the driver to
control the rig. Do not drive at the maximum permissible speed. Reduce your speed even more if load, weather or wind conditions
are unfavorable
-particularly when going downhi ll.
Reduce vehicle speed
i mm edia te ly if the trailer shows the slightest
sign of swaying.
Do not try t o stop the sway ing by accelerating.
Observe speed lim its. In some areas, speeds for vehicles towing
trai lers are lower than for regular ve hicles .
Always apply brakes ear ly. When driving down hill, shift into a lower
gear to use the engine braking effect to slow the vehicle. Use of the
brakes a lone can cause them to overheat and fail.
Cool ant temp era tu re
The coolant temperature gauge=> page 12 must be observed care­
ful ly. If the needle moves close to the upper end of the scale, reduce
speed immed iately and/or turn off the air conditioner.
If the coolant temperature warning light in the instrument cluster
starts flas hing
-F- , pul l off the road, stop and let t he engine idle for
about two m inutes to prevent heat build-up.
& WARNING
An yone n ot properl y re str aine d in a mo ving vehi cle is at a mu ch
g re ate r ri sk in an accid ent . N ever let any on e rid e in y our car who
i s not properl y wea rin g th e res tra int s pr ov ided by Audi.
•
Trailer towing tips
Important to know
Your vehicle handles differently when towing a trailer because of
the additional weight and different weight distribution. Safety, performance and economy wi
ll greatly depend on how carefully you
l oad your trailer and opera te your r ig.
Before you actual ly tow your trailer, practice turn ing, stopping and
backing up in an area away from traffic . Keep practicing unti l you
have become comp letely fam iliar with the way your vehicle-trai ler
combination behaves and responds.
Backing up is di fficult and requires practice. Backing up with a
trai ler generally requires steering action opposite to that when
backing up your veh ic le without a tra iler.
Ma inta in a greater distance between your veh ic le and the one in
front of you . You will need more room to stop. To compensate for
the trai ler, you w ill need a larger than norma l turning radius.
When passing, remember that you cannot accelerate as fast as you n or mally wou ld because of t he added load . Make su re you have
enough room to pass . After passing, al low plenty of room for your
t rai ler befo re changing lanes again .
Avo id jerky starts, sharp turns or rapid lane changes.
[ i ] T ips
• Do not tow a tra iler during the break-in period o f your veh ic le.
• I f you tow a trailer, your Audi may require more frequent main te­
nance due to t he extra
load=> page 380. •
Parking on a slope
Do n ot park on a slope with a trailer. If it cannot be
avoided, do
so o nly after doing the followi ng:
When p arking :
-Apply the foot b rake.
- Have someone p lace chocks under both the vehicle and
the trailer wheels. _,,,

Tires and wheels -
----------------
•
& WARNING (continued)
crashes and serious personal injuries . Have worn or damaged tires
replaced immediately.
• 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
low speed.
Glossary of tire and loading terminology
Accessory weight
means the combined weight (in excess of those standard items
which may be replaced) of automatic transmission, power steering,
power brakes, power windows, power seats, radio, and heater, to
the extent that these items are available as factory-installed equip­
ment (whether installed or not).
Aspect ratio means the ratio of the height to the width of the tire in percent.
Numb ers of 55 or lower indicate a low sidewall for improved
steering response and better overall handling on dry pavement.
Bead
means the part of the tire that is made of steel wires, wrapped or
reinforced by ply cords and that is shaped to fit the rim.
Bead separation
means a breakdown of the bond between components in the bead.
Cord
means the strands forming the plies in the tire.
& WARNING (continued)
• Never mount used tires on your vehicle if you are not sure of
their
"previous history." Old used tires may have been damaged
even though the damage cannot be seen that can lead to sudden
tire failure and loss of vehicle control.
• If you notice unusual vibration or if the vehicle pulls to one side
when driving, always stop as soon as it is safe to do so and check
the wheels and tires for damage.
•
Cold tire inflation pressure
means the tire pressure recommended by the vehicle manufacturer
for a tire of a designated size that has not been driven for more than
a couple of miles (kilometers) at low speeds in the three hour period
before the tire pressure is measured or adjusted.
Curb weight
means the weight of a motor vehicle with standard equipment
including the maximum capacity of fuel, oil, and coolant, air condi­
tioning and additional weight of optional equipment.
Extra load tire
means a tire design to operate at higher loads and at higher infla ­
tion pressures than the corresponding standard tire. Extra load tires
may be identified as
"XL", "xi", "EXTRA LOAD", or "RF" on the side ­
wall.
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.
Vehicle care

_L--_T_ ir_e_ s_ a_ n_d _ w_ h_ e_e _l_s _________________________________________________ _
Groove
means the space between two adjacent tread ribs.
L oa d r atin g (code)
means t he m aximum load that a t ire is rated to carry for a given
inf lation pressure . You may not find this information on a ll tires
because it is not required by law.
M ax imum l oad r ating
means t he load rating for a tire a t the maximum permissib le infla­
tion pressure for that tire.
Maximum l oaded v ehi cle wei ght
means the sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capaci ty weight, and
(d) Product ion options weight
M ax imum (p er mis sibl e) infl ati on pr essure
means the maximum cold i nflation pressure to wh ic h a t ire may be
inflated. Also cal led "maximum inflation pressure."
Normal occ upant we ight
means 150 lbs. (68 ki lograms) times the number of occupants
seated in the veh ic le up to the total seating capacity of your vehicle.
Oc cupant distributi on
means distribution of occupants in a vehicle .
Outer di ameter
means the overal l diameter of an inf lated new tire.
O verall width
means the linear distance between the exteriors of the sidewa lls of
an infla ted t ire, includ ing elevat ions due to labe ling, decorat ions, or
protective bands or ribs .
Ply
means a layer of rubber -coated para llel cords.
P rodu cti on opt ion s we ig ht
means the co mbined weight of those insta lled regular product ion
options weighing over 5 lbs. (2.3 kg) in excess of those standard
items which t hey replace, not previously considered in curb weight
or accessory weight, inc luding heavy duty brakes, ride levelers, roof
rack, heavy du ty bat tery, and special trim .
Rad ia l pl y tir e
means a pneumat ic t ire in wh ich t he ply cords that extend to the
beads are laid at substantially 90 degrees to the centerline of the
t read .
Recomm ended infl ation pres su re
see :::::> page 325, "Cold tire inflat ion pressure".
R einforc ed tir e
means a tire des ign to operate at higher loads and at higher infla­
tion pressures than the corresponding standard tire. Reinforced
t ires may be iden tified as
"XL", "xi", "EXTRA LOAD", or "RF" on the
sidewa ll.
Rim
means a metal support for a tire or a tire and tube assembly upon
whic h the t ire beads are seated.
Rim di ame ter
means nominal diameter of the bead seat. If you change your whee l
size, you wi ll have to purchase new tires to match the new rim diam ­
eter.
Rim siz e design ation
means rim diameter and width.
Rim w idth
means nominal distance between rim flanges .

Tires and wheels -
-----------------------------
•
Sidewall
means that portion of a tire between the tread and bead.
Speed rating means the speed at which a tire is designed to be driven for
extended periods of time. The ratings range from 93 mph (150 km/h)
to 186 mph (298
km/h)=> page 338. You may not find this informa­
tion on all tires because it is not required by law.
The speed rating letter code, where applicable, is molded on the tire
sidewall and indicates the maximum permissible road
speeds=> &
in "Winter tires" on page 341.
Tire pressure monitoring system
means a system that detects when one or more of a vehicle's tires
are underinflated and illuminates a low tire pressure warning tell­
tale.
Tread
means that portion of a tire that comes into contact with the road.
Tread separation
means pulling away of the tread from the tire carcass.
Treadwear indicators (TWI)
means the projections within the principal grooves designed to give
a visual indication of the degrees of wear of the tread . See
=> page 335, "Tread Wear Indicator (TWI)" for more information on
measuring tire wear .
Uniform Tire Quality Grading
is a tire information system developed by the United States National
Highway Traffic Safety Administration (NHTSA) that is designed to
help buyers make relative 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 considerations, such as price, brand loyalty and dealer recom- mendations
. Under UTQG, tires are graded by the tire manufac­
turers in three areas: treadwear, traction, and temperature resis­
tance . The UTQG information on the tires, molded into the
sidewalls.
U.S. DOT Tire Identification Number (TIN)
This is the tire'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 plant where it was manufactured,
and the last four numbers represent the week and year of manufac­
ture. For example,
DOT ... 2207 ...
means that the tire was produced in the 22th week of 2007 . The
other numbers are marketing codes that may or may not be used by
the tire manufacturer . This information is used to contact
consumers if a tire defect requires a recall.
Vehicle capacity weight
means the rated cargo and luggage load plus 150 lbs. (68 kilograms)
times the vehicle's total seating capacity as listed on the label located either on the driver's side 8-pillar or on the inside of the fuel
filler flap.
Vehicle maximum load on the tire
means that load on an individual tire that is determined by dis trib­
uting to each axle its share of the maximum loaded vehicle weight
and dividing by two.
Vehicle normal load on the tire
means that load on an individual tire that is determined by dis trib­
uting to each axle its share of the curb weight, accessory weight,
and normal occupant weight (distributed in accordance with table
below => page 328) and dividing by two. ..,.
Vehicle care

lllffl...__T_ ir_e _ s_ a_ n
_ d_ w_ h_ e_ e_ls _________________________________________________ _
Occupant loading and distribution for vehicle normal load for various designated seating capacities Designated seating capacity , num­
ber of occupants
4
5
Cold tire inflation pressure
Vehicle no rmal load, number of
oc cupants
2
3
Occupant distribution in a normally
loaded vehicle
2 in front
2 in front, 1 in back seat
Tire pressure affects the overall handling, performance and safety of a vehicle.
Fig . 272 Tire pressure
label: located either on
driver's side B-pillar or
inside the fuel filler flap
llRE AND LOADING INFORMATION
T IRE SIZE COLO TIRE PRESS URE
FRONT -KPa, -PSI
REAR -KP a, -PSI
SPARE -KPa , -PSI \.~__., ::::::::;=~ ===..:;,;_. Fig. 273 Tire pressure
label
Maintaining proper tire pressure is one of the most important
things you can do to help avoid sudden tire failure. Underinflated
tires are a major cause of sudden tire failure. Keeping tires at the
right pressure is also important for safe and responsive vehicle
handling, traction, braking and load carrying.
Tire pressures are
particularly important when the vehicle is being driven at higher
speeds, and then especially when heavily loaded even within the
permissible load-carrying capacities approved for your vehicle.
The recommended tire pressures for your Audi depend on the kind
of tires on your vehicle and the number of passengers and/or
amount of luggage you will be transporting.
•
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 kilopascals
(kPa), the international measuring unit and in pounds per square
inch (PSIJ. Tire pressure is based in part on the vehicle's design and
load limit
-the greatest amount of weight that the vehicle can carry
safely and the tire size. The proper tire pressure is frequently
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 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. Therefore, you should never let air out of a
warm tire to match "cold tire inflation pressure " recommendations .
The tires would then be underinflated and could fail suddenly. On
USA vehicles, the tire pressure label is located on the driver's
side 8-pillar . On Canada vehicles , the tire pressure label is located
either on the driver's side 8 -pillar or inside the fuel filler flap . The tire
l)ll-

________________________________________________ T_ i
_ r_e _s_ a_n_ d_ w_ h_ e_e _ l_s __ fflll
•
pressure label lists the recommended cold tire inflation pressures
for the vehic le at its maximum capacity weight and tires that were
on your vehicle at the time it was manufactured .
If yo u w is h to impro ve comfo rt when oper ating the vehi cle at
norm al lo ad (up to 3 occup ants), y ou can adju st tire pre ssure s to
tho se spe cified for norm al v ehi cle lo ad . Before oper ating the vehi cle
a t maximum lo ad , you mu st incre as e the tire pre ssure s to tho se
s p ec ified for m aximum vehi cle lo ad ::::>
& .
Bear in m ind that the tire pressure monito ring system can only
monitor the tire pressures you have stored . The system does not
recognize the load condition of your vehicle .
The effect iveness of the t ire pressure mon itoring system will be
impaired if you store normal load pressures but then operate the
veh ic le at its maximum
load ::::>& .
Engin e II Tire design ati on See the i
llustration::::>
page 328, fig . 272 for the location of the label
e it h er o n driver's side 8 -p illar or inside the fue l fil ler flap (color of
the actual label and exact location on the vehicle will vary slight ly!.
Note that the following tab le is accurate at the time of going to
press and is subject to change . In the event o f discrepanc ies, the t ire
pressure label (On USA vehic les, the tire pressure labe l is located on
the driver's s ide 8 -p illar . On Canada vehicles, the tire pressure label
is located either on the driver's side 8 -pi llar or inside the fuel fil ler
fl ap) always takes precedence .
The table below lists the recommended cold tire inflation pressures
for the Audi mode l covered by your Owner's Literature at the
veh ic le's capacity weight and the tire s izes insta lled on the respec ­
tive models as original equipment, or as a factory option.
Tire pressure front Tire pressure rear
( displa ce-
normal load
II full load norm
al load
full load
ment in
c ondition al condition condition al condition
liter)
PSI II kPA PSI II kPA PSI I I kPA If PSI IT kPA .,
8-c ylinder 255 /45 R1 8 99H All Sea son
33 230 33 230 30 2
10
33 230
4 .2
255/40 R19100V XL All Sea son 36 250 38 260 33 230 36 250
255 /40 R1 9 1 00 Y XL High P erformanc e 33 230 33 230 30 2 10 33 230
275 /35 R20 102V XL High Performance
33 230 36 250 30 2
10
39 270
8-cylinder 2 55/45 R1 8 99H All Sea son
33 230 35 240 30 2
10
33 230
4 .2 L
255/40 R1 9 100V XL All Sea son 36 250 38 260 33 230 36 250
255 /40 R1 9 1 00Y XL High Perfo rman ce
33 230 35 240
30 2
10
33 230
275 /35 R20 102V XL High Performance 33 230 36 250 30 2 10 39 270
Vehicle care
I

___ T_ ir_e _s_ a_n_ d_ w_ h
_ e_e_ l_ s _______________________________________________ _
Engine Tire designation Tire pressure front Tire pressure rear
( displace-
normal load full load normal load
full load
ment in
liter)
condition al condition conditiona l condition
kPA PSI kPA PSI kPA PSI
12-cylinder
255/45 R18 99H All Season 36 250 38 260 32 220 32 220
6.0 Individual
255 /40 R19 100V XL All Season 41 280 4 1 280 36 250 36 250
rear seats
255/40 R19 100V
XL High Performance
36 2
50
38 260 3
2 220 32 2 20
275 /35 R20 102Y
XL High Performance 38 41 280 35 2 40 44 300
12 -cylinder 255 /45 R18 99H All Season 36 250 36 250 32 220 32 220
6 .0
255 /40 R19 100V XL All Season 4 1
280 4
1
280 36 250 36 250
255 /40 R19 100V
XL High Performance
36 250 36 250 32 2 20 32 220
275 /35 R20 102Y XL High Performance 38 260 4 1 280 35 240 44 300
XL = reinforced or extra load tire . It may also appear as xi , EXTRA LOAD , or RF on the tire sidewall .
al norma l load cond ition => page 328.
The co rrect tire pressure for the spare wheel is located on a label
either on the driver 's s ide 8-pillar or inside t he fue l fil ler flap.
Because technica l changes may be made to vehicle equipment
du ring t he mode l year, always co mpare the tire si ze desig nati on on
the tire pressure label on your vehicle with the tires on your vehicle .
M ake s ure t hat the tire si ze info rmat ion o n the ve hicle labe l is the
same as the size of the tires on the vehicle . T his is especial ly impor ­
t an t if t he vehicle bel ongs t o so me one e lse o r yo u boug ht the
vehic le with different rims/tires or you bought the vehicle as a previ ­
ously owned ve hicle.
Reme mber, you r safety and that of y our passengers a ls o depe nds
on making su re that load limits are not exceeded. Vehicle load
i nc ludes every body and everyt hin g in and o n th e veh icle . T hese load
limits are technically referred to as the vehicle's Gross Veh ic le
Weig ht Ratin g ("GVWR"). T he Gro ss Axle Weigh t Ra tin g ("GAWR") is
the maximum load that can be applied at each of the vehicle's two axles
. The Gross Vehic le We ight Rating and the Gross Axle Weight
Rating are l isted on the safety compl iance sticker labe l located
either on the driver's side 8 -pillar or on the inside of the fuel filler
fl ap . T he t ire p ressure label on you r A ud i lists t he m axi mum
combined weight of a ll of the occupants and luggage or other cargo
th at the v ehicle can carry . Fo r the locati on of the t ire press ure la be l
=> page 328, fig . 27 2.
& WARNING
Overloading a vehicle can cause loss of vehicle control , a crash or
other accident, serious per sonal injury , and even death .
• Carrying more weight than your vehicle was designed to carry
will prevent the vehicle from handling properly and increase the risk of a loss of vehicle control. ...,

Tires and wheels Ill
----------------
•
& WARNING (continued )
• 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
c au sing lo ss of control and a cra sh.
• Always make sure that the total load being transported -
including the we ight of a trailer hitch and the tongue weight of a
loaded trailer -does not make the vehicle heavier than the
v ehicle's Gross Vehicle Weight Rating .
& WARNING
• Incorrect tire pressures and /or underinflation can lead to a
serious or fatal accident.
• Incorre ct tire pressures and /or underinflation cause in creased
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,
c ausing loss of vehi cle control.
•
Checking tire pressure
The c orrect tire pressu re f or the tires ori gina lly installe d
on your vehicle is lis ted on the ti re pressure la bel loca ted
either on driver's side 8-pillar or inside the fuel filler flap.
The rec omme nded ti re p ressu res a re on the tire pr essure la be l an d
in the
table~ page 328, "Co ld tire inflation pressure". This means
t ha t th e pres su re m us t be c hecked a nd adjus ted w he n t he ti re has
not been driven for more than a couple of miles (kilometers) at low
speeds du rin g the p revio us th ree hou rs . Ai r in t he tires ex pand s
when the tire heats up as a resu lt of internal fr iction as it flexes in
use. The tire pressure is hig her when the tire has warmed up than
when it is "co ld ." I
t is the inflation pressure in a "cold" t ire that counts . Therefore, you
s h oul d never le t air ou t of a warm ti re to matc h "Co ld t ire in fl ati on
pressure"
recommendations~ pa ge 328 . The tires wou ld then be
u nde rinflate d and could fail sud denly .
The t ire pressure label o n your Au di lists the recomme nded cold t ire
inflation press ures at maximum capacity for the new, origina l equip ­
m ent tires t hat we re on yo ur vehicle at t he t ime it was manufac ­
tured. For the location of the
labe l~ page 328, fig . 272.
M ost tires lose a ir natu rally ove r ti m e. T hey can a lso lose so me air if
you drive ov er a pothole or h it a curb while parkin g. It is usually not
pos sible to see whe the r the rad ial tir es use d today are unde rin flated
just by look in g at t hem .
T herefore, be sure to chec k tire pressures at least once a month and
a lways be fore go ing o n a lo ng trip . Make su re to take the nu mber o f
people and the amount of luggage into account when ad justing tire
pr ess u re fo r a trip -even one t hat you wou ld not conside r to be
" long ."
See~ page 333, "Tires and vehic le load limits" for more
i mp ort ant i nfor mati on .
A lways use a n accu rate ti re p ressure gauge w hen c hec kin g a nd
adjusting inflation pressures . Chec k all of the tires and be sure not
t o fo rget t he spare t ire . If the pressu re i n an y tire is too high when
the tire is "co ld," let air out of the tire slow ly with the edge of the tire
ga uge and kee p checking the press ure u ntil y ou r each th e pr essu re
that is correct for the load (passengers and luggage) and kind of
d riv in g yo u plan to do .
I f the pressure in any tire is too low, note the difference between the
pressure in the cold tire and the pressure you need and add the air
t hat you need to r each the correct pressure for the veh ic le load
(passengers and luggage) for the tires on your vehicle as listed on
t he o n you r vehicl e and i n thi s m anua l a n d t he kind of driving yo u
p lan to do.
Never exceed the maximum inflation pressure listed on the tire
sidewall for any reason .
Remember that the vehic le manufacturer, not the tire manufacturer,
deter mines the correc t tire pressure for the ti res on your vehicle.
~
Vehicle care