2017 AUDI TT ROADSTER Owners Manual

co
co
.... N
" N .... 0
" "' c:o
(D Tires for passenger vehicles
(if applicable)
P indicat es a tir e for a p asse ng er
vehi cle. T indi cates a tire de sig­
nated for tempor ary us e.
@ Nominal width
Nominal width of the tire be­
tween the sidew alls in millime­
ters. In general: the larger the number, the wider the tire.
@ Aspect ratio
Height /width ratio expressed as a
percentage.
@ Tire construction
R indicates a radial tire.
® Rim diameter
Siz e of the rim diameter in inches.
@ Load index and speed rating
The load ind ex indi cates the tire' s
lo ad-ca rry in g ca pacity.
The speed rating indicates the maximum permitted speed¢.&
in
W inter tires o n page 261 .
"EXTRA LOAD", "xl" or "RF" indi­
cate s that the tire i s reinfor ced or
is an Extra Load tire.
Speed rat- Maximum permitted speed
ing
p
up t o 93 mph ( 150 km/h)
Q up to 99 mph (160 km/ h)
Wheels
Speed rat- Maximum permitted speed
ing
R up to 106 mph (170 km/h)
s u p to 11 0 mph ( 180 km/h)
T up to 118 mph (190 km/h)
u u p to 124 mph ( 200 km/h)
H up to 130 mph (210 km /h)
V u p to 14 9 mph (2 40 km/h) al
z above 149 mph (240 km/h)al
w up to 168 mph (270 km/h)al
y up to 1 86 mph (300 km/h)al
a) For tir es ab ove 149 mph (2 40 km/h),
t ir e man ufact ure rs sometimes use the
co de "Z R".
(j) US DOT number (TIN) and
manufacture date
The m anufac ture date i s listed on
the tire sidewall (it ma y only ap­
pear on the inner side of the tire):
DOT ... 2216 ...
means, for example , that the tire
was produced in the 22nd week of
the year 2016.
@ Audi Original equipment
tires
Audi Original equipment tire s
with th e designation "AO " hav e
b een specially mat ch ed to your
Audi. When u sed correctly, thes e
tires meet the high est stand ards
for safety and handling. An au­
thorized Audi dealer or author­
ized Audi Service Facility will be
247

Wheels
able to provide you with more in­
formation.
® Mud and snow capability
"M/S" or "M+S" indicates the tire
has properties making it suitable
to drive in mud or snow.
& indi­
cates a w inter t ire.
@ Compos ition of the tire cord
and materials
The number of plies indicates the
number of rubberized fabric lay­
ers in the tire . In general: the
more layers, the more weight a
tire can carry. Tire manufacturers must also specify the materia ls
used in the tire. These include
steel, nylon, polyester and other
materials .
@ Maximum permitted load
This number indicates the maxi ­
mum load in k ilograms and
pounds that the tire can carry.
@ Uniform tire quality grade
standards for treadwear,
traction and temperature
resistance
Tread wear, t raction and temper ­
ature ranges ¢
page 262.
248
@ Running direction
~ Maximum permitted
inflation pressure
This number indicates the maxi ­
mum pressure to wh ich a t ire can
be inflated unde r normal operat­
ing condit ions .
Glossary of tire and loading
terminology
Accessory weight
means the combined weight (in
excess of those standard items
which may be replaced) of auto­
matic transmission , power steer­
ing , power brakes , power win­
dows, power seats , radio, and
heater, to the extent that these
items a re available as fac tory-in­
stalled equipment (whet her in ­
stalled or no t).
Aspect ratio
means the rat io of the height to
the width of the tire in pe rcent.
Numbers of 55 or lower indicate a
low sidewall fo r imp roved steer­
ing response and better overa ll
handling on dry pavement .
Bead
means the part of the tire that is
made of steel wires, wrapped or ...

a, a, .... N
" N .... 0
" V, a:,
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.
Cold tire inflation pressure
means the tire pressure recom­
mended by the vehicle man ufac­
turer for a tire of a designated
size that has not been driven for
more than a couple of miles (kilo­
meters) at low speeds in the
three ho ur period before the tire
pressure is measured or adjusted.
Curb weight
means the weight of a motor ve­
hic le with standard equipment in­
c lud ing the maximum capac ity of
fuel, oil, and coolant, a ir condi­
tioning and add itional weigh t of
optional equ ipment .
Extra load ti re
means a tire designed to operate
at higher loads and at h igher in­
flation pressures than the corre­
sponding standard tire . Extra load
tires may be ident ified as "XL",
Wheels
"xl" "EXTRA 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 in terfaces.
Gross Vehicle Weight Rating
( " GVWR ")
means the maxim um total loaded
weight of the vehic le.
Groove
means the space between two ad ­
jacent tread ribs .
Load rating (code)
means the maxim um load that a
tire is rated to carry for a g iven in­
flation pressu re. You may not find
this informat ion on all tires be­
ca use it is no t requ ired 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 we ight
2 4 9
...

Wheel s
(c) Vehicle capaci ty weight, and
(d) Production options we ig ht
Maximum (permissible)
inflation pressure
means the maximum cold infla­
tion pressure to which a tire may be inflated . Also called "max i­
mum i nflation pressure ."
Normal occupant weight
means 150 lbs (68 kg) times the
number of occupants seated in
the vehicle up to the to tal seat ing
capacity of your vehicle .
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 luding
e levations due to label ing, deco­
rations, or protective bands or
ribs .
Ply
means a layer of rubber-coated
parallel cords .
250
Production options weight
means the combined weight of
those installed regular product ion
options weighing over 5 lbs (2.3 kg) in excess of those standard
items which they replace, not pre­
viously considered in curb weight or accessory weight, including
heavy duty brakes , ride levelers,
roof rack, heavy duty ba ttery, a nd
special trim.
Radial ply tire
means a pneumatic tire in which
the ply cords that extend to the
beads are la id at substantially 90
deg rees to the centerline o f the
tread.
Recommended inflation
pressure
see ¢ page 249 , Cold tire infla­
tion pressure.
Reinforced tire
means a tire designed to operate
at higher loads and at higher in­
flation pressures than the corre­
sponding standard tire . Rein ­
forced tires may be identified as "XL", "xl", "EXTRA LOAD", or "RF"
on the s idewall. ...

a, a, .... N
" N .... 0
" V, a:,
Rim
means a metal support for a tire
or a tire and tube assembly upon
which the tire beads are seated.
Rim di amet er
means nominal diameter of the
bead seat. If you change your
wheel size, you will have to pur­
chase new tires to match the new
rim diameter.
Rim size designation
means rim diameter and width.
Rim width
means nominal distance between
rim flanges.
Sidewall
means that portion of a tire be­
tween the tread and bead.
Speed rating (letter code )
means the speed at wh ich a tire is
designed to be driven for extend­
ed periods of time . The ratings
range from 93 mph (150 km/h)
to 186 mph (298 km/h)
¢ table
on page 247.
You may not find
this information 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 the
Wheels
maximum permissible road
speeds
¢ A in Winter tires on
page 261.
T ire pressure mon itoring
system *
means a system that detects
when one or more of a vehicle's
tires are underinflated and illumi­
nates a low tire pressure warning
telltale.
T read
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 255, Treadwear indicator
for more information on measur­
ing tire wear .
Uniform Tire Quality Grading
is a tire information system devel­
oped by the United States Nation ­
a l Highway Traffic Safety Admin­
istration (NHTSA) that is designed
to help buyers make relative
25 1
..

Wheels
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 considera ­
tions, such as price, brand loyalty
and dealer recommendations. Un ­
der UTQG, tires are graded by the
tire manufacturers in three areas:
treadwear, traction, and tempera ­
ture resistance. The UTQG i nfor­
mation 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 nex t
two numbers or letters indicate
the plant where it was manufac­
tured, and the last four numbers represent the week and year of
manufacture. For example,
DOT ... 2216 ...
means that the tire was produced
in the 22nd wee k of 2016. The
other numbers are marketing co­
des that may or may not be used
252
by the t ire manufacturer . This in­
formation is used to contact con­
sumers if a tire defect requ ires a
recall.
Vehicle capacity weight
means the rated cargo and lug­
gage load pl us 150 lbs (68 kg)
times the veh icle's designated
seating capacity.
Vehicle maximum load on the
tire
means that load on an individual
tire that is determined by distrib ­
uting to each axle its sha re of the
maximum loaded vehic le we ight
and dividing
by two.
Vehicle normal load on the tire
means that load on an individual
tire that is determined by d istrib­
ut ing to each axle its share of the
curb weight, accessory weight,
and normal occupan t weight (dis­
tr ibuted in accordance with
¢ ta­
ble on page 258) and d ividing by
two.
~

a, a, .... N
" N .... 0
" V, a:,
Occupant loading and distri­
but ion for vehicle normal load
for various design ated se ating
c a pa cit ies
Refer to the tire inflation pres­
sure label for the number of seat­
ing positions. Refer to the table
¢ table on page 258 for the
number of people that corre­
spond to the vehicle normal load.
New tires or wheels
Audi recommends having all work on tires or wheels performed by
an authorized Audi dealer or au­
thorized Audi Service Facility.
These facilities have the proper knowledge and are equipped with
the required tools and replace­ ment parts.
... New ti res do not yet have the
optimum gripping properties.
Drive carefully and at moderate
speeds for the first 350 miles (500 km) with new tires.
... Use ti res of the same construc ­
tion, size (rolling circumference)
and as close to the same tread
pattern as possible on all four
wheels.
11> D0 not replace tires individually .
At least replace both tires on the
same axle at the same time .
Wheels
11> Audi recommends that you use
Audi Original Tires . If you would
like to use different tires, please
note that the tires may perform
differently even if they are the
same size
c:> A -
.. If you would like to equip your
vehicle with a tire/rim combina­
tion that is different from what
was installed at the factory, con ­
sult with an authorized Audi
dealer or authorized Audi Service Facility before making a pur ­
chase
c:::> A .
The spare tire* is different from
the regular tires installed on the
vehicle -for example, if winter
tires or wide tires are installed -
so only use the spare tire* tempo­
rarily in case of emergency and
drive carefully while it is in use . It
should be replaced with a regular
tire as soon as possible.
On
a ll w heel drive vehicles, all
four wheels must be equipped
with t ires that are the same brand
and have the same construction
and tread pattern so that the drive system is not damaged by
different tire speeds. For this rea­
son, in case of emergency, only use a spare tire* that is the same .,.
253

Wheels
circumference as the regular
tires.
A_ WARNING -
-Only use tire/rim combina­
tions and suitable wheel bolts
that have been approved by
Audi. Otherwise, damage to
the vehicle and an accident could result.
-For technical reasons, it is not
possible to use tires from oth­
er vehicles -in some cases,
you cannot even use tires from
the same vehicle model.
-Make sure that the tires you
select have enough clearance
to the vehicle. Replacement
tires should not be chosen simply based on the nominal
size, because tires with a dif­
ferent construction can differ greatly even if they are the
same size. If there is not
enough clearance, the tires or
the vehicle can be damaged and this can reduce driving
safety and increase the risk of
an accident.
- Only use tires that are more
than six years old when abso­
lutely necessary and drive
carefully when doing so.
254
-Do not use run-flat tires on
your vehicle. Using them when not permitted can lead to ve­
hicle damage or accidents .
-If you install wheel covers on the vehicle, make sure they al­
low enough air circulation to
cool the brake system. If they
do not, this could increase the risk of an accident.
Tire wear/damage
Fig. 189 Tire profile : treadwear indica­
tor
Tire wear
Check the tires regularly 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.
-Hav e an authorized Audi dealer
or authorized Audi Service Facili­
ty check the wheel alignment if
there is unusual wear .
..