2014 AUDI TT ROADSTER weight

Tires and wheels
Tires
General notes
Tires may be the least appreciated and most
abused parts of a motor vehicle .
Tires may be the least appreciated and most
abused parts of a motor vehicle . Tires are,
however, one of the most important parts of a
vehicle, particularly considering the compara­
tively small patch of rubber on each tire that
assures that a ll- important contact between
you, your vehicle and the road.
Maintaining the correct tire pressure, mak ing
sure that your vehicle and its tires do not have
to carry more weight than they can safely han­
d le, avoiding damage from road hazards and
r eg ularly inspect ing t ires for damage i nclud­
ing cuts, slashes irregu la r wear and ove rall
condition are the most important things that
you can do to he lp avoid sudden tire failure in­
cluding tread separat ion and blowouts.
A vo idin g damage
If you have to drive over a curb or similar ob­
stacle, drive very slow ly and as close as possi ­
b le at a right angle to the curb.
A lways keep chemicals includ ing grease, o il ,
gasoline and brake fluid off the t ires .
I nspect the t ires regularly for damage (cuts,
cracks or b listers, etc.). Remove any fo reign
bod ies embedded in the treads.
Storing tires Mark tires when you remove them to indicate
the direction of rotation . Th is ensures you to
be ab le to mount them correctly when you re­
i nstall them .
When removed, the wheels or t ires should be
sto red in a cool, dry and preferably dark place .
Store tires in a vertical pos ition if they are not
mounted on rims, in a horizontal pos it ion if
they are mounted on rims .
Tires an d wheel s 181
New tires
New ti res have to be broken in¢& .
The tread depth of new t ires may vary, accord­
ing to the type a nd make of t ire and the tread
patte rn.
H idden damage
Damage to tires and r ims is often not readily
visible . If you notice unusual v ib rat ion or the
vehicle pulls to one s ide, th is may ind icate
that one of the t ires has been damaged . T he
ti res m ust be chec ked immed iate ly by an au­
thorized Audi dea le r or q ua lified wor kshop .
Unidirectional tires
A un idirectional tire can be identified by ar­
rows on the sidewa ll, that po int in the direc­
tion the t ire is designed to rotate. You must
f ol low the specified di rection of rotation . T his
is necessary so that these tires can develop
their optimum characteristics regarding grip, road noise, wear and hydrop laning resistance.
For more information
¢ page 212.
A WARNING
New tires or t ires that are o ld, worn or
damaged cannot provide maximum con­
trol and braking ability .
-
-New tires tend to be slippery and must
be broken in. To reduce the r isk of losing
control, a co llision and ser ious personal
in ju ries, d rive with special ca re for the
fi rst 350 m iles (560 km).
- Driving with worn or damaged tires can
lead to loss of control, sudden tire fail­
ure, including a blowout and sudden de­
fl ation, cras hes and se riou s personal in­
juries . Have worn or damaged t ires re­
placed immediate ly.
- 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 special care and at low
speed.
•
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182 Tire s and wheel s
-Never mount used tires on yo ur 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 t ire failure
and loss of vehicle control.
- If you notice unusual vibration or if the
vehicle pulls to one side when driving, al­
ways stop as soon as it is safe to do so
and check the wheels and tires for dam­
age.
(D Note
Please note that summer and wi nte r tires
are designed for the cond itions that are
Glossary of tire and loading terminology
Accessory weight
means t he comb ined we ight (in excess of
those sta ndard items which may be rep laced)
of au toma tic tra nsmission, power s teer ing,
power brakes, power windows, power seats,
ra dio, and heater, to the extent that th ese
items are availab le as factory -installed equip­
ment (whether installed or not) .
Aspect ratio
means t he ratio of the he ight to the w idth of
the tire in percent . Numbers of 55 or lower in ­
dicate a low sidewall for improve d steering re­
sponse and better overall handling on dry pavement .
Bead
means the part of the ti re that is made of
steel wires, wrapped or reinforced by ply cords
and that is shaped to fit the rim.
Bead separation
means a b reakdown of the bond between
components in the bead.
Cord
means the strands forming the plies in the
tire . typ
ica l in those seasons . Aud i recommends
using winter tires during the winter
months . Low temperatures signif icant ly
decrease the e lasticity of summer tires,
which affects tract ion a nd brak ing ability.
If summer tires are used in very co ld tem­
peratures, cracks ca n form on the tread
bars, res ulting in permanent tire damage
that can cause loud driving no ise and un­
balan ced t ires. Audi i s not responsible for
th is type of damage .
Cold tire inflation pressure
means the tire p ress ure recommended by t he
vehicle manufacture r fo r a tire of a des igna ted
s iz e t hat has not bee n driven for more than a
coup le of miles (k ilometers) at low speeds in
t h e three hour period before the tire pressure
is measured or adjusted.
Curb weight
mea ns the we ight of a motor ve hicle with
standard equipment in clu din g the max imum
capacity of fuel, oil, and coolant, air condi ­
tioning and additional weight of optiona l
equipment.
Extra load tire
me ans a tire designed to ope rate a t higher
loads and at highe r inflation p ress ures than
the corresponding standard tire. Extra load
tires my be identified as "XL", "xl", "EXTRA
LOAD", or "RF" on the sidewall.
Gross Axle Weight Rating ("GAWR ")
me ans the lo ad -c a rry ing c apac ity of a s ingle
axle system , measured a t the tire-ground in­
terfaces.
Gross Vehicle Weight Rating ("GVWR ")
mea ns the max imum total loaded we ight of
t h e ve hicl e. .,.

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 183
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 182, 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. •
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184 Tires and wheels
Speed rating (letter code)
means the speed at wh ic h a tir e is des igned to
be d riven for extended per io d s o f time. The
ratings range from 93 mph (150 km/h) to
186 mph (298 km/h)
¢ page 193. You may
not find this in format ion on all tires because
it is not required by law.
The speed rating letter code, w here a pplica­
b le, is molded on the tire s idewa ll and indi­
cates the maxim um permissible road speeds
¢ &. in Winter tires on page 197.
Tire pressure monitoring system
means a sys tem that detects whe n one or
mo re of a vehicle's t ires a re under inflated and
il lum inates a low t ire p ress ure warn ing te ll­
tale.
Tread
means t hat port ion of a tire tha t comes into
con tact w it h t he road.
Tread separation
means pull ing away of the t read from the t ire
car cass .
Treadwear indicators (TWI)
means t he p rojections withi n the pr inc ipal
g rooves desig ned to give a v isua l ind ication of
the deg rees of wea r of the tre ad . See
¢
pag e 191, Tread W ear Indicator (TWI) for
mo re inf ormat io n on measu ring tire we ar.
Uniform Tire Quality Grading
is a ti re i nfo rmation system developed by the
United States Nat io nal Highway Traffic Safety
Admi nistration (N HTSA) that is designed to
h e lp buye rs m ake re lative compa risons among
tires. The UT QG i s n ot a safety r ating an d no t a
g ua ran tee t hat a tir e will las t fo r a presc ribed
n umber of m iles or per form i n a certa in way .
It sim ply g ives tire buyers a dditio na l info rma­
tion to combine w ith other considerations, s
u ch as pr ice, brand loyalty a nd dealer recom ­
me ndations. Under U TQG, tires are gra ded by
t h e tire man ufact urers in three areas : tread­
wear, traction and temperature resistance .
The UTQG informat io n on the tires, m olded in ­
to the sidewalls .
U.S. DOT Tire Identification Number (TIN )
This is the tire's "se ria l numbe r" It begins
with the letters "DOT" and ind icates that the
t ir e meets all federa l standards. The next two
numbers or letters ind icate the plant where it
was ma nufactu red, and the last four numbe rs
r eprese nt the week and year of ma nufact ure.
Fo r exampl e,
DOT ... 2213 ...
means that the tire was produced in t he 22nd
wee k of 2013. The ot her numbers are market­
ing codes that may or may not be used by the
t ire manufacturer . This information is used to
contact consumers i f a tire defect requires a
r ecall .
Vehicle capacity weight
means the rated cargo and luggage load p lus
150 lbs. (68 k ilograms) times the vehicle's to­
ta l seating capacity as listed on the label lo­
cated on the driver's side B-pilla r.
Vehicle maximum lo ad on the tire
means that load on an individua l tire that is
determined by distrib uting to eac h axle its
share of the maxim um loaded vehicle weight
and divid ing by two .
Vehicle normal load on the tire
means that load on an individua l t ir e that is
determined by distrib uting to eac h ax le its
share of the curb weight, accessory weight,
and normal occ upant weig ht (d istr ibuted in
accorda nce wit h tab le below¢
page 185)
and divid ing by two .

Tires and wheels 185
Occupant loading for vehicle normal load (no luggage)
Designated seating capacity, number of occu- Vehicle normal load (no luggage), number of
pants occupants
2 2
Cold tire inflation pressure
Tire pressure affects the overall handling, performance and safety of a vehicle.
Fig . 138 Tire 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 per
square inch (PSI) . Tire pressure is based in
part on the vehicle's desig n and load limit -
the greatest amount of weight that the vehi­
cle can carry safely and the tir e size. The prop­
er tire pressure is frequently referred to as the
"recommended cold tire inf lation 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 neve r let air out of a
warm tire to match "cold tire inflation pres­
sure" recommendations. The tires would then
be underi nflated and could fail suddenly .
Maintaining proper tire pressure is one of the
most important things you can do to help
avoid sudde n tire failure . Underinflated tir es
are a major cause of sudden tire failure . Keep­
ing tires at the right press ure is also impor­
tant for safe and responsive vehicle handling,
traction, braking and load carrying.
Tire pres-
-"' -
-----------------~ ,.
•(=~: I := I :::. I) ('::- ) :8
n- ............ .,~-------...---- .... _ ... &,. ............................... ~----·-..
TN Sill COI.DJN ""5Ulll PHW DIMUCSl:>HS PM.ISIOHOHPHEUSA,...,
-AVANT -KPA. • PSI
-- -KPA. a PSI
-°'"""""' -KPA. a PSI
Fig. 139 Tire pressure labe l
SEE OWNER"$ MAMJAl FOR A L _.,..,..
VOIIIUMAM..JEt OU PROPAIETAI~ ,OUft P'l us Of RENSEIGHEMEN'TS
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 vehicle
and the number 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 inflation pressures
for the vehicle at its maximum capacity
weight and tires that were on your vehicle at
the time it was manufactured .
If you wish to improve comfort when operat­
ing the vehicle at normal load (no luggage)
up to 2 occupants, you can adjust tire pres­
sures to those specified for normal vehicle
load. Before operating the vehicle at maxi­
mum load, you must increase the tire pres­
sures to those specified for maximum vehicle
load ¢,& .
Bea r in mind that the tire pressure mon itor ing
system can only monitor the tire pressures ..,_

186 Tire s and wheel s
you have stored . The system does not
recognize the load condition of your vehicle.
The effectiveness of the tire pressu re monito r­
ing system w ill be impaired if yo u store nor­
mal load pressures but then operate the vehi ­
cle at its maximum load¢.&..
See the il lustration¢
fig. 138 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 a t
the time o f go ing to press and is subject to change. In the
event of discrepancies, the t ire
pressure label (on driver's side 8-pi llar) a lways
takes precedence .
T he table below lists the recommended cold
ti re inflation pressu res for the Audi mode l
covered by your Owner's Literature at the vehi­
cle's capacity weight and the t ire sizes instal­
l ed on the respective models as original
equipment, or as a factory option.
Model/ Tire designation
Tire pressure front Tire pressure rear
Engine full load full load
no rmal load
condition normal load
condition
condition (2 occupants condition
(2 occu-
( up to 2 oc-
plus lug- (up to 2 oc-
pants plus
cupants)
gage) cupants)
luggage)
PSI kPA PSI kPA PSI kPA PSI kPA
TT /TTS : 22 5/50 Rl 7 94H All Sea -
32 220 32 220 29 200 29 200 2.0 liter son
4-c ylin-225 /50 Rl 7 94W XL High
d er
Perf orm ance
32 220 32 220 29 200 29 200
2
45 /4 5 Rl 7 95 H All Sea-
32 220 32 220 29 200 29 200 son
245 /45 Rl7 95YX L High
32 220 32 220 29 200 29 200 Perf ormance
245 /40 R1 8 93H All S ea-
32 220 32 220 29 200 29 200 son
2 45 /40 Rl8 9 3Y XL High
32 220 33 230 29 200 30 210 Perform ance
25 5/35 Rl 9 96Y XL Hi gh
32 220 32 220 29 200 29 200 Perf or mance
X L= r ein for ce d or e xtra lo ad tire . It m ay also a ppear as xl, EX TRA LO AD, or RF on th e tire side-
w all.
The correct tire pressure for the spare wheel is
l ocated on a label on the driver's side 8-pillar.
Because technical changes may be made to
vehicle equ ipment dur ing the model year, al­
ways compare the tire size designation on the
tire pressure labe l on your vehicle w ith the
tires on your vehicle. Ma ke sure that the tire
size information on the vehicle label is the same
as the size of the tires on the veh icle.
T his is espec ially important if the veh icle be­
longs to someone e lse or you boug ht the vehi­
cle w ith different rims/tires or you bought the
vehicle as a previously owned veh icle.
Remember, your safety and that of your pas-
sengers also depends on making sure that
II>-

load limits are not exceeded . Vehicle load in­
cludes everybody and everything in and on the
veh icle. These load limits are technically refer­
red to as the vehicle's G ross Vehicle We ight
Rating ("GVWR") . The Gross Axle Weight Rat­
ing ("GAWR") is th e ma ximum load that can
be ap plied at each of the veh icle's two axles .
The Gross Ve hicle We ight Rating and the
Gross Axle We igh t Rating a re listed on the
safety compliance st icker labe l located on the
d river's side 8-p illa r. T he tire pressure label on
your Audi lists the maximum combined weight of all of the occupants and luggage or
other cargo that the vehicle can carry. For the locat ion of the tire pressure label¢
fig. 138.
A WARNING
Overloading a vehicle can cause loss of ve­
hicle control, a cras h or other accident, se­
r ious personal inju ry, and even death.
- Carry ing more weight than your vehicle
was designed to carry will prevent the
vehicle from handling properly and in­ cr ease the ris k of a loss of veh icle con­
t ro l.
- T he bra kes on a veh icle that has been
overloaded may no t be ab le to stop t he
vehicle within a sa fe distance.
- T ires on a vehicle that has been ove rload­
ed can fail suddenly causing loss of con­
t ro l and a c rash.
A WARNING
- Incorre ct ti re pressures and/or underin­
fla tion can lead to a serious o r fata l acci ­
dent.
- Incorrect tire pressures and/or underin­
flation cause increased tire wea r and can
affect the handling of the vehicle .
- Incorrect tire pressures and/or underin ­
flation can also lea d to sudden tire fa il­
u re, incl uding a b lowo ut and sudden de­
flation, causing loss of vehicle control.
Tire s an d wheel s 187
Checking tire pressure
The correct tire pressure for the tires original­
ly installed on your vehicle is listed on the tire
pressure label located on driver's side 8-pil­ lar.
The recommended tire pressures are on the
ti re pressu re label and in the table
¢
page 185, Cold tire inflation pressure. This
mea ns tha t the pressu re m ust be chec ked and
adjus ted when the t ire has not been dr iven fo r
more than a couple of miles (kilometers) a t
low speeds d uring the previous three ho urs.
Air in the tires expands when the tire heats up
as a result of interna l frict ion as it flexes in
use. The tire pressure is higher when the tire
has warmed up than whe n it is "cold."
It is the inflation pressure in a "co ld" t ire that
counts. Therefore, you should never let a ir o ut
of a warm tire to match "Cold t ire inflat ion
pressure" recomme ndat io ns¢
page 185 . The
ti res wou ld then be underinflated and could
fail suddenly .
The tire pressure label on your Audi lists the recommended co ld tire inflation pressures for
the new, orig inal equ ipment tires that we re
on your veh icle at the time it was manufac­
tured. Fo r the location of t he labe l
¢page 185, fig. 138.
Most tires lose air natura lly ove r time . They
can a lso lose some air if you d rive over a pot­
hole or hit a curb while par king.
It is usually
not po ss ible to see whethe r the rad ia l t ires
u sed today are underinflated just by loo king
at them .
T he refore, be sure to check t ire p ressu res at
l east once a mo nth and a lways befo re goi ng
on a long t rip. M ake s ure to ta ke the n umber
of peop le and the amount o f luggage into ac ­
count when adjusting tire pressure for a trip -
even one that yo u wou ld not conside r to be
"long." See ¢
page 189, Tires and vehicle
load limits
for more important information .
A lways use an acc urate tire pressure ga uge
when checking and ad justing inflation pres­
s u res. Check all of the tires and be sure not to ..,.
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•

-If the tire pressure is too low or too high,
the tires w ill wear prematurely and the
vehicle will not handle we ll.
- If the tire is not flat and you do not have
to change a wheel immed iate ly, drive at
reduced speed to the nearest service sta­
t ion to check the tire pressure and add
air as required.
([) Note
Driving without va lve stem caps ca n cause
damage to the tire va lves . To prevent this ,
always make su re that facto ry installed
valve stem caps on all wheels a re secure ly
mounted on the va lve.
@ For the sake of the environment
Underinflated tires will a lso increase the
fue l consumption .
Tires and vehicle load limits
There are limits to t he amount of load or
weight that any veh icle and any t ire can carry.
A veh icle that is overloaded w ill no t handle
well and is more diff icult to stop. Overloading
can not on ly lead to loss of veh icle contro l,
but can a lso damage important parts of the
ve hicle and can lead to sudden tire failure, in­
cluding a blowout and sudden deflation that
can cause the veh icle to crash .
Your safety and that of yo ur passengers a lso
depends on making sure that load limits are
no t exceeded. Vehicle load includes everybody
and everyth ing in and on the vehicle . These
load limits a re techn ica lly refer red to as the
ve hicle's
Gro ss Vehicl e W eight Rat ing
(" GVWR ").
T he "GVWR " includes the we ight of the basic
vehicle, all factory installed accesso ries , a full
tank of fue l, oil, coo lant and other fluids pl us
maximum load. The maximum load includes
the number of passengers th at the ve hicl e is
i ntended to carry ("seating capacity") with an
assumed weight of 150 lbs (68 kg) for eac h
passenger at a designated seating position
Tire s an d wheel s 189
and the total weight of any luggage i n the ve­
hicle .
T he
Gro ss Ax le Weight Rating ( " G AWR ") is
the max imum load th at can be applied at each
of the vehicle's two axles .
T he Gross Vehicle Weight Rat ing and the
G ross Ax le Weig ht Ra ting are l iste d on the
s af ety comp liance s ticke r label lo cated on the
driver's side 8-pillar . Your Audi has 2 seating
positions. Each seating position has a safety
belt ~
page 101, Safety belts.
The fac t that there is an upper limit to yo ur
vehicle's G ross Vehicle Weight Rating means
that the total weight of whatever is being car­ ried in the vehicle is lim ited . The more passen ­
gers in the vehicle or passengers who are
heavier than the standard we ights assumed
mea n that less we ight can be carried as lug ­
gage .
The tire pressure label on your Audi also lists
the maximum combined weight of a ll of the
occupants and luggage or other cargo that
t h e ve hicle can ca rry . Fo r th e locat ion of the
label
~ page 185, fig . 138 .
_&. WARNING
Overloading a veh icle can cause loss of ve­
h icl e co ntro l, a crash or o ther accide nt, se­
rio us pe rsonal inj ury, and even dea th.
- Ca rrying more we igh t tha n your ve hicle
was des igned to carry wi ll prevent the
veh icle from handling properly an d in­
crease the risk of the loss of vehicle con­
trol.
- T he b rakes 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 over load­
ed can fail suddenly, incl uding a blowo ut
and sudden deflation, causing loss of
control and a crash.
•
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