2018 AUDI TT ROADSTER inflation pressure

Safe driving
on the safety compliance sticker on the left
door jamb. Exceeding permissible weight
standards can cause the vehicle to slide and handle differently .
- Please observe information on safe driving
9 page 179.
A WARNING
To help prevent poisonous exhaust gas from
being drawn into the vehicle, always keep the
rear lid closed while driving.
- Never transport objects larger than those
fitting completely into the luggage area be­ cause the rear lid cannot be fully closed .
- If you absolutely must drive with the rear lid open, observe the following notes to reduce
the risk of poisoning:
- Close all windows,
- Close the convertible top,
- Open all air outlets in the instrument pan-
el,
- Switch off the air recirculation,
- Set the fresh air fan to the highest speed .
A WARNING
.
-
Always make sure that the doors, all win­
dows, the convertible top and the rear lid are
securely closed and locked to reduce the risk
of injury when the vehicle is not being used.
- After closing the rear lid , always make sure
that it is properly closed and locked.
- Never leave your vehicle unattended espe­
cially with the rear lid left open . A child
could crawl into the vehicle through the lug­
gage compartment and close the rear lid be­
coming trapped and unable to get out. Be­
ing trapped in a vehicle can lead to serious
personal injury.
- Never let children play in or around the vehi­
cle.
- Never let passengers ride in the luggage compartment. Vehicle occupants must al­
ways be properly restrained in one of the ve­
hicle's seating positions.
184
@ Tips
- Air circulation helps to reduce window fog­
ging. Stale air escapes to the outside
through vents in the trim panel, on the left
side of the luggage compartment. Be sure
to keep these slots free and open.
- The tire pressure must correspond to the
load. The tire pressure is shown on the tire
pressure label. The tire pressure label is lo­
cated on the driver's side B-pillar . The tire
pressure label lists the recommended cold
tire inflation pressures for the vehicle at its
maximum capacity weight and the tires that
were on your vehicle at the time it was man­
ufactured. For recommended tire pressures
for normal load conditions , please see chap­
ter ¢page255.
Tie -downs
The luggage compartment is equipped with four
tie-downs to secure luggage and other items.
I A UD I I
Fig. 151 Lu ggage compartmen t: loca tion of the tie -dow ns
Use the tie-downs to secure your cargo properly
9page 183, Loading the luggage compartment.
In a collision, the laws of physics mean that even
smaller items that are loose in the vehicle will
become heavy missiles that can cause serious in­
jury. Items in the vehicle possess energy which
vary with vehicle speed and the weight of the
item . Vehicle speed is the most significant factor.
For example , in a frontal collision at a speed of
30 mph (48 km/h), the forces acting on a 10 lbs
(4.5 kg) object are about 20 times the normal
weight of the item. This means that the weight
of the item would suddenly be about
...

Wheel s
0 US DOT number (TIN) and
manufacture date
T he manufacture date is listed on
the tire sidewall (it may only ap­
pear on the inner side of the tire) :
DOT ... 2217 ...
means, for example, that the tire
was produced in the 22nd week of
the year 2017.
@ Audi Original Tires
Audi Original equipment tires
with the designation
"AO" have
been specially matched to your
Audi. When used correctly, these
tires meet the highest standards
for safety and handling. An au ­
thorized Audi dealer or author­
ized Audi Service Facility will be
able to provide you with more in­
formation.
® Mud and snow capability
"M/5" or "M+S" indicates the tire
has properties ma king it suitable
to drive in mud or snow.
& indi­
cates a winter t ire .
@) Compos ition of the tire cord
and materials
T he number of plies indicates the
number of rubberized fabric lay­
ers in the tire . In general: the
more layers, the more weight a
246
tire can carry. Tire manufacturers
must also specify the materials
used in the tire . These include
steel , nylon, po lyester and other
materials .
@ Maximum permitted load
This number indicates the max i­
mum load in kilograms and
pounds that the tire can carry.
@ Uniform tire quality grade
standards for treadwear,
tr action and temper ature
resistance
Treadwear, traction and tempera­
ture
ranges ~ page 260.
@ Running direction
@Maximum permitted
inflation pressure
This number indicates the maxi ­
mum pressure to which a tire can
be inflated under normal operat­
ing condit ions .
Glossary of tire and loading
terminology
Accessory weight
means the comb ined weight (in
excess of those standard items
which may be replaced) of auto­ matic transmission, power steer -
ing, power brakes, power
..

windows, power seats, radio, and heater, to the extent that these
items are available as factory- in­
stalled equipment (whether in­
stalled or not) .
Aspect ratio
means the ratio of the height to
the width of the tire in percent .
Numbers of 55 or lower indicate a
low sidewall for improved steer­
ing response and better overall
handling on dry pavement .
Bead
means the part of the tire that is
made of steel wires , wrapped or
reinfo rced 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.
Cold tire inflation pressure
means the t ire pressure recom­
mended by the vehic le manufac­
turer for a tire of a designated
Wheels
three hour period before the tire
pressure is measured or adjusted .
Curb weight
means the weight of a motor ve­
hicle with standar d equipment in ­
c luding the maximum capacity of
f u el, oi l, and coolant, air condi ­
tioning and additional weight of
optional eq uipment.
Extra load ti re
means a t ire designed to operate
at higher loads and at higher in ­
flation pressures than the corre­
sponding s tandard tire. Extra load
ti res may be identified as
"XL",
"xl" "EXT RA LOAD" or "RF" on , ,
the sidewall.
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 maxim um total loaded
weight of the vehic le .
Groove
size that has not been driven for means the space between two ad -
~ more than a co uple of miles (kilo -jacent tread ribs . .,.
"
8 meters) at low speeds in the
" "' a:,
2 47

Wheel s
Load rating (code )
means the maximum load that a
tire is ra ted to carry for a given in­
flation pressure. You may not find
this info rmatio n on all tires be­
cause it is not required by law .
Maximum load rating
means the load rating for a tire at
the maximum permissible infla ­
tion 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
Ma ximum (permissible )
inflation pressure
means the maximum cold infla­
tion pressure to which a tire may be inflated . A lso called "maxi­
mum inflation pressure."
Normal occupant weight
means 150 lbs (68 kg) times the
number of occupants seated in
the vehicle up to the total seating
capacity of your vehicle.
248
Occupant distribution
means distribution of occupants
in a vehicle.
Outer diameter
means the overall diameter of an
inflated new tire.
Overall width
means the linear distance be­
tween the exteriors of the side­
walls of an inflated tire, inc lud ing
elevations due to labeling, deco­ rations, or protective bands or
ribs.
Ply
means a layer of rubber-coated
parallel cords.
Production options weight
means the combined weight of
those installed regular production options weighing over 5 lbs
(2 .3 kg) in excess of those stand­
ard items which they replace, not
previously considered in curb
weight or accessory weight, in­ cluding heavy duty brakes, ride
levelers, roof rack, heavy duty
battery, and special trim.
Radial ply ti re
means a pneumatic tire in which
the ply cords that extend to the
...

0 co .... N
" N .... 0
" "' co
beads are laid at substantially
90 degrees to the centerline of
the tread .
Recommended inflation
pressure
see ¢ page 247, Cold tire infla­
tion pressure .
Reinforced tire
means a tire designed to operate
at higher loads and at h igher in ­
flation pressures than the corre­
sponding standard tire. Rein­
forced tires may be identified as
"XL", "xl", "EXT RA L OAD", or "RF"
on the sidewa ll.
Rim
means a metal support for a tire
or a tire and tube assemb ly upon
which the t ire beads are seated .
Rim diameter
means nominal diameter of the
bead seat . If you change your
whee l size, you will have to pu r­
c h ase new t ires to match the new
rim diameter .
Rim size designation
means rim diamete r and width .
Rim width
means nominal distance between
rim flanges .
Wheels
Sidewall
means that portion of a tire be ­
tween the tread and bead .
Speed rating (letter code)
means the speed at which a tire is
designed to be driven for extend­
ed periods of time. The ra tings
range from
93 mph (150 km/h)
to
186 mph (298 km/h) ¢ table
on page 245 .
You may not find
this informat ion on all tires be ­
cause it is not required by law .
The speed rating letter code,
where applicable, is molded on
the tire sidewall and indicates t he
maximum pe rmissible roa d
speeds . See also ¢
A in General
information on page 244.
Tire pressure monitoring
system *
means a system that detects
when one or more of a vehicle's
ti res are underinflated and illumi ­
nates a low tire pressure warning
telltale .
Tread
means that portion of a ti re that
comes into contact with the road .
.,.
249

0 a, .... N
Tire wear/damage
Fig. 188 Tire profile: treadwear indica­
tor
Tire wear
Check the tires regular ly for wear.
-Inflation pressure that is too low
or high can increase tire wear
considerably.
-Driving quickly through curves, rapid acceleration and heavy
braking increase tire wear.
-Have an authorized Audi dea ler
or authorized Audi Service Facili­
ty check the wheel alignment if
there is unusual wear.
-Have the wheels rebalanced if an imbalance is causing noticeable
vibration in the steering wheel.
If you do not, the tire s and other
vehicle components could wear more quickly.
~ l) Obey any applicable regulations in your 0
[;:; country. 00
Wheels
Treadwear indicator
Original equipment tires contain
treadwear indicators in the tread
pattern, which are bars that are 1/16 in (1.6 mm) high and are
spaced evenly around the tire per­ pendicular to the running direc­
tion
c:> fig. 188. The letters "TWI"
or triangles on the tire sidewall indicate the location of the tread­
wear indicators.
The tires have reached the mini ­
mum tread depth
l) when they
have worn down to the treadwear
indicators. Replace the tires with
new ones
c:> ..1,,. .
Tire rotation
Rotating the tires regularly is rec­
ommended to ensure the tires
wear evenly. To rotate the tires, install the tires from the rear axle
on the front axle and vice versa.
This w ill allow the tires to have
approximately the same length of
service life.
..,.
253

Wheels
Steps for Determining Correct Load Limit
1. Locate the statement "THE
COMBINED WEIGHT OF OCCU­PANTS AND CARGO SHOULD
NEVER EXCEED XXX KG OR XXX
LBS" on your vehicle's placard
(tire inflation pressure label)
c:> page 254 , fig. 189 .
2. Determine the combined
weight of the driver and pas­
sengers that will be riding in
your vehicle.
3 . Subtract the combined weight
of the driver and passengers
from
"XXX " kilograms or "XXX"
pounds shown on the sticker
c:> page 254 , fig. 189 .
4. The resulting figure equals the
available amount of cargo and
luggage load capacity. For ex­
ample, if the
" XXX" amount
equals 1400 lbs and there will be five 150 lbs passengers in
your vehicle, the amount of available cargo and luggage load capacity is 650 lbs
(1400-750 (5
X 150) = 650 lbs)
5 . Determine the combined
weight of luggage and cargo
being loaded on the vehicle.
That weight may not safely ex­
ceed the available cargo and
258
luggage load capa city cal culat­
ed in Step 4.
6. If your vehicle will be towing a trailer, load from your trailer
will be tran sferred to your ve­
hicle. Con sult thi s manual to
determine how this reduces
the available cargo and lug­
gage load capacity of your vehi ­
c le .
~check the tire sidewall
(c:> page 245 , fig. 187) to deter­
mine the designated load rating
for a spe cifi c tire.
Wheel bolts and rims
Wheel bolts
Wheel bolts mus t be clea n and loose n/tighte n
e asi ly.
Rims
Rims with a bo lted r im ring* o r with bo lted wheel
covers* cons ist of mult iple pieces . These com po­
nen ts were bol ted togethe r using s pec ial bol ts
a nd a s pecial proc edur e. Yo u m ust no t rep air or
d isa sse mble th em
¢ & -
_& WARNING
Wh eel bolts th at are tig hte ned or re paired in­
cor re ctly can be come loose and resu lt in los s
of ve hicle contro l, wh ic h increases the risk of
an accident. For t he cor rec t tighten ing s pec ifi­
cation,
see¢ page 27 8, Finishing.
- Always keep the wheel bolts an d the
threads in the w heel h ub clean an d fre e of
greas e.
- On ly us e whee l bolts tha t fit th e rim.
- Always h ave damage d rims repaire d by an
auth orized Audi dealer or auth orized A udi
S erv ice Facility. Neve r repa ir o r disassemb le
~

Cl 00 .-< N r-­N .-< 0 r-­Vl 00
Tire pressure monitoring system
(J_) General notes
Each tire, incl uding the spare (if provided),
should be checked month ly when co ld and inflat­
ed to the inf lation pressure recommended by the
ve hicle manufacturer on the vehicle placard or
tire inflat ion pressure label. (If your vehicle has
tires of a d ifferent s ize tha n the s ize indicated on
the veh icle placa rd or t ire inflation pressure la­
be l, you s hou ld determine the prope r tir e infla­
tion pressure fo r th ose tires).
As an added safety feature, your ve hicle has been
equ ipped w ith a t ire pressu re monito ring system
(TPMS) that ill uminates a low tire p ress ure tell­
tale whe n one or more of yo ur t ires is sign ificant ­
l y unde r-infla ted. Accord ingly, whe n the low tire
p ressure tellta le illuminates, yo u should stop and
check your tires as soon as possible, and inflate
them to the proper press ure. D riving on a signifi ­
cantly under-inflated tire causes the tire to ove r­
h eat and can lead to t ire failure. Under-inflation
a lso reduces fuel efficiency and ti re tread life,
and may affect the veh icle's handling and stop­
p ing ability .
P lease note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver's re­
sponsib il ity to ma inta in correct tire pressure,
even if u nder-inflation has not reached t he leve l
to tr igger illum inat io n of t he TPM S low tire p res ­
sure telltale.
Your veh icle has also been equ ipped w ith a TPMS
malfunct ion ind icator to indicate when the sys­
tem is not operat ing properly. The TPMS ma l­
f u nction ind icator is combined w ith the low tire
p ressure tellta le. Whe n the system det ects a
mal function, the te lltale wi ll flash fo r approxi ­
mate ly one mi nute and then remain continuous ly
illum inated. This sequence will continue upon
subseq uent ve hicle start-ups as long as the ma l­
function ex ists .
W hen t he malfunctio n indicator is ill uminated,
the system may not be ab le to detect or signa l
low t ire press ure as intended. TPMS ma lfunctions
may occur for a var iety of reasons, including the
Wheels
insta llation o f replacement or alternate tires or
whee ls on the vehicle that prevent the TPMS
from functioning p roperly . Always check the
TPMS ma lfunction te lltale after replac ing one or
more tires or wheels on you r vehicle to ensure
t h at the rep lacement or a lternate tires a nd
wheels allow t he TPMS to continue to function
prope rly.
If the Tire Pressure Monitoring System
indicator appears
Applies to: vehicles with Tire Pressure Monitoring System in­
dicator
The tire pressure indicator in the instrument
cluster informs you if the tire pressure is too low
or if there is a system malfunction.
U sing the ABS se nsors, the t ire pressure monitor­
ing system compares the tire tread c ircumfer­
ence and v ibration characterist ics of the ind ividu­
al tires. If the pressu re changes in one o r more
t ir es, th is is indica ted in the Info tainment sys tem
display wi th an indica to r li ght
ti] and a message.
If only one ti re is affected, the location of tha t
tire will be indicated.
T he tire press ures mus t be store d in the Infota in­
me nt system agai n ea ch t ime t he p ressures
change (switching between partia l and full load
pressure) or after c hanging or replacing a tire on
yo ur vehicle
¢ page 262 . The tire pressure moni ­
toring system on ly monitors the tire pressure you
have stored. Refer to the t ire pressure label for
the recommended t ire pressure for your vehicle
¢ page 254, fig . 190 .
Tire tread c ircumference and vibration character ­
istics can change and cause a tire pressu re warn­
i ng if:
- the ti re pressure in one or more tires is too low
- the tire has str uctural damage
- t he t ire w as replaced or the t ire pressu re w as
changed and it was no t stored ¢
page 262
- the spare tire* is i nstalled
Indicator lights
ti] -loss of pressure in at least one tire ¢,& .
Check the t ires and replace or repair if necessary.
Check/correct the pressures of all fou r tires and
.,.
261