brakes AUDI A8 2017 User Guide

Assist
Audi adaptive cruise
control
Description
Applies to: vehicles with Audi adapt ive cruise control
F ig. 103 Detection range
The adaptive cruise control system is a combina­
tion of speed and distance regulation. It assists
the driver by both regulating the speed and
maintaining a distance to the vehicle driving
ahead, within the limits of the system .
If the sys­
tem detects and object ahead, adaptive cruise
control can brake and acce lerate your vehicle.
This makes driving more comfortable both on long stretches of highway and in stop-and-go
traffic .
What can adaptive cruise control do?
The adaptive cruise control system uses video, ra­
dar and ultrasound . Objects driving ahead can be
recognized up to 650 feet (200 m) away.
On open roads with no traffic, it functions like a
cruise control system . The stored speed is main­
tained. When approaching an object ahead, the
adaptive cruise control system automatically
brakes to match that object's speed and then
maintains the stored distance . As soon as the
system does not detect an object ahead, adaptive
cruise control accelerates up to the stored speed .
In stop-and -go traffic, adaptive cruise control can
brake until the vehicle is stat ionary and then be·
gin driving again under certain conditions
¢page 97.
Audi braking guard can warn you about an im ­
pending collision and initiate braking maneuvers
¢ page 99.
94
Which functions can be controlled?
When yo u switch adaptive cruise control on, you
can set the current speed as the "contro l speed"
¢ page 96, Switching on/off.
When driving, you can stop cruise control
¢page 98 or change the speed ¢page 97 at
any time.
You can also set the distance to the object mov­
i ng ahead and set the driving mode of the adap­
tive cruise control¢
page 98.
General information
Applies to: vehicles with Audi adaptive cruise control
Fig. 104 Front of the vehicle: sensors and video came ra
The areas that contain the radar and ultrasonic
sensors and the video camera ¢
fig. 104 must
not be covered by stickers, deposits o r other ob­
jects because they can interfere with the function
of the adaptive cruise control system and braking guard . For information on clean ing, refer to
¢
page 306. The same applies for any modifica­
tions made in the front area.
The function of the adaptive cruise control sys­
tem and braking guard is limited under some
conditions.
- Objects can only be detected when they are
with in the sensor range
¢page 94, fig. 103.
-The system has a limited ability to detect ob­
jects that are a sho rt distance ahead, off to the
side of your vehicle or moving into your lane.
- Objects that are difficult to detect such as mo­
torcycles, vehicles with high ground clearance
or an overhanging load are detected late or not
detected at all.
- When driving through curves ¢
page 95. ll>

Ass is t
When driving into a curve ¢ fig. 105 and out of a
curve, the adaptive cruise control may react to an
object in the neighbor ing lane and apply the
brakes. You can prevent that by pressing the ac­
celerator pedal brief ly .
Stationary objects
App lies to: vehicles with Audi adaptive cruise contro l
Fig . 1 06 Example: ob ject c hangin g lanes and stat ionary
object
The adaptive cruise contro l system only reacts to
objects that are mov ing or that the system has
a lready detected as movi ng. For examp le, it can
react when a vehicle that has a lready been de ­
tected @turns or changes lanes, but adaptive
cru ise control does not react to a stat ionary vehi ­
cle @.
Switching on /off
Applies to: vehicles with Audi adaptive cruise control
Fig. 1 07 Opera ting lev er: sw itch ing on a nd o ff
96
Fig. 108 In strument cl uste r: adapt ive c ruise control
You can set any speed between 20 mph (30 km/
h) a nd 95 mph ( 150 km/h).
Ind icator lights and messages in the instrument
cluster display inform you about the current sit­
uat ion and setting .
An additional indicator appears in the Head-up display* .
Switching adapti ve cruise contr ol on
.,. Pull the lever toward you into position (D
¢ fig. 107 . ACC: standby appears in the dis­
play .
Saving the speed and acti vating regulation
.,. To save the current speed, press the ISETI
¢ fig . 107 button. The sto red speed is shown in
the speedomete r in the LED line @and appears
briefly in the information line@¢
fig. 108 .
.,. To act ivate the regulation w hile stationary, also
press the brake pedal.
Switching adaptiv e cruise contr ol off
.,. Push the lever away from you into position @
until it cl icks into place . The message ACC : off
appears .
@ Indicator lights
II-adap tive c ruise control is switched on. No
ob jects are detected ahead . The stored speed is
maintained.
• -An object ahead w as de tected . The adaptive
cruise contro l sys tem regu lates the speed and
distance to the object ahead and accelerates/
brakes automatically .
IJ>

Assist Interrupting cruise control
Applies to: vehicles with Audi adaptive cruise contro l
Fig. 110 Selector leve r
Requirement: adaptive cruise control mus t be
sw itched on .
Overriding cruise control
• To accelerate manually , pull the lever toward
you into position @and hold it there . T he mes­
sage
ACC: override appears . Or
• press the accelera tor pedal.
• To resume cruise control , release the lever or
take your foot off the accelerator pedal.
Canceling cruise control while driving
• Move the lever into position @. The message
ACC: standby appears . Or
• press the brake pedal.
• To resume the stored speed, move the lever in ­
to posit ion @.
Canceling cruise control when stopped
• Push the lever away from you into position @.
The message
ACC : standby appears.
• To resume cruise control, press the brake pedal
and pull the lever toward you into position @.
.&, WARNING
It is dangerous to activate cruise control and
resume the stored speed when the current
road, traffic or weather conditions do not per­
mit this. This increases the risk of an accident.
98
Setting the distance
Applies to: vehicles with Audi adaptive cruise control
Fig. 111 Ope rating leve r: sett ing th e dis tan ce
• Tap the switch to display the current set dis­
tance
¢ fig . 111 .
• To increase or reduce the distance in incre­
ments, tap the switch again to the right or left .
The distance between the two veh icles will
change in the instrument cluster display .
When approaching an object ahead, the adaptive
cruise contro l system brakes to match that speed
and then adjusts to the set distance.
If the object
ahead accelerates, adaptive cruise control will al­
so accelerate up to the stored speed .
The higher the speed, the greater the distance
¢ ,&. .The
Distance 3 setting is recommended .
That is equal to the general recommendation of
"half the speed shown on the speedometer".
The distances provided are spec ified values . De ­
pending on the driving situation and the way the
object ahead is dr iving, the actual distance may
be more or less than these target distances .
The var ious symbo ls for the time increments ap­
pears briefly in the information line @
¢
page 96 , fig . 108 when you change the set­
tings .
c::::,_c::::, ___ Distance 1 : this setting corresponds
to a distance of 92 ft (28 m) when traveling at 62
mph (100 km/h), for example (time between: 1
second) .
c::::, __ c::::, __ Distance 2: this setting cor responds
to a distance of 118 ft (36 m) when traveling at
62 mph (100 km/h) , for example (time between:
1.3 seconds) . ""

C) C0 ....
"' " "' .... 0 0 :r ~-- -~ -Di st a nce 3: this setting corresponds
to a distance of 164
ft (SO m) when traveling at
62 mph (100 km/h), for examp le (time between :
1.8 seconds).
~-- --~ Dist a nce 4: This setting corresponds
to a distance of 210
ft (64 m) when traveling at
62 mph (100 km/h), (time distance of 2.3 sec­
onds).
A WARNING
Following other vehicles too closely increases
the risk of coll isions and ser ious personal in ­
jury.
- Setting short distances to the traffic ahead
reduces the t ime and distance available to
br ing your vehicle to a safe stop and makes
it even mo re necessary to pay close atten­
t ion to traffic.
- Always obey applicable traffic laws, use
good j udgment, and select a safe following
distance for the traffic, road and weather
condit ions .
@ Tips
- Di stance 3
is set automatically each time
you switch the ignition on.
- Your settings are automatically stored and
assigned to the remote control key being
used.
Selecting the driving mode
A pp lies to: ve hicles with Audi adaptive cruise co ntrol
.,. Se lect the des ired driving mode in dr ive se lect
c> page 110 .
@ Tips
Your se ttings a re au toma tical ly s to red and as­
signed to the remote control key being used.
A ss ist
Driver intervention request
App lies to : vehicles wit h Aud i ada ptive cr uise control
Fig. 112 Instrume nt cl uster : request fo r drive r in terven ­
tio n
In certain situa tions, the system will request you
to take action:
- if the braking from the adap tive cruise contro l
system is not enough to ma intain eno ugh dis­
t ance to the object ahead.
The da nger is indicated by the. indicator light
r:!> fig . 112. An audio signal will a lso sound .
- Press the brake pedal to slow your vehicle
down.
Audi braking guard
Appl ies to: vehicles wit h Audi ada ptive cr uise control
Fig. 113 Instrument cluster : approach wa rnin g
The braking guard uses radar sensors and a v ideo
camera. It also functions within the limits of the
system when adaptive cru ise control is switched
off .
Wh at can the b raking guard do?
When detected in time, the system can assess
dangerous situations where an object ahead
brakes suddenly or if your own vehicle is traveling .,..
99

Ass is t
at a high speed and approaching an object that is
moving more slowly. The braking guard does not
react if it cannot detect the s ituation.
The sys tem advises you of various dangerous si t­
uations :
- T he
distan ce warning occurs if you drive too
closely to t he object ahead for a long period of
time . If the ob je ct ahead b rakes strongly, you
would not be able to avoid a collis ion . The .
indicator light appears as an indication for this.
- T he
app roach wa rning occurs when an object
ahead is traveling more slow ly or brakes
strongly . When this warning occurs, it may on ly
be possib le to avoid a co llision by swerv ing or
braking strong ly. The danger is indicated by the
• indicator light
c> fig. 113. An audio signal
will also sound.
If you do not react early enough or at a ll to a dan­
gerous situation, the braking guard supports you
with a brak ing intervention. The approach warn­
ing indicators and the message
Braking guard :
e n gaged
also appear .
- If a collision is imminent, the system will first
provide an
ac ute wa rni ng by braking sharply.
- If you do not react to the acute warning, the braking guard can increase the braking force
within the limits of the system. This reduces
the vehicle speed in the event of a co llision.
- The system can init iate comp lete deceleration
sho rtly before a collision
ll . Full decele ration at
high speeds occurs only in vehicles with adap­
tive cru ise cont rol and s ide assist (pre sense
pl us).
- If the braking guard determines that you are
not brak ing strongly enough when there is an
impending co llision, it can increase the bra king
f o rce .
- T he pre se nse functions also engage when
the re is an impend ing collision
c:> page 216.
Which functions can be controll ed ?
You can switch the braking guard and the dis ­
tance/approach warn ing on or off in the lnfotain-
l ) Ma rket -spe cific
100
ment system c:> page 101, Settings in the Info­
tainment system.
A WARNING
Lack of attent ion can cause collisions, other
accidents and ser ious personal inju ries. The
braking guard is an assist system and cannot
p revent a collision by itself . The driver must
a lways inte rvene . The driver is always respon­
sib le for braking at the co rrect t ime .
- Always pay close attention to traffic, even when the b raking guard is sw itched on. Be
ready to intervene and be ready to take
comp lete contro l whenever ne cessa ry . Al­
ways keep the sa fe and legal dist ance be­
t ween your vehi cle and veh icles up ahead .
- Br ak ing g uard works w ithin limits and will
no t respond o utside the system limits, for
examp le when approaching a stopped vehi ­
cle or stationary obstacle (en d of a traffic
jam or vehicle that has broken down in traf­
fic).
- Always remember that the radar sensor for
the brak ing g uard works only within def ined
detection and range limits that may prevent
the prope r detection o f other vehicles.
- The radar sensor 's function and range can
be reduced by rain, snow and heavy spray.
Moving vehicles up ahead may not be
promptly detected or may not be detected
at al l.
- Reflective surfaces including crash barr iers
or tunnel entrances may impair the function
of the radar sensor.
(D Tips
- You can cancel the braking with increas ing
force that is initiated by the system by bra k­
ing yourself, by acce le ra ting not iceably or
by swerving.
- Keep in mind that braking gua rd can brake
unexpectedly. Always secure any cargo or
objects tha t you are transpo rting to redu ce
t h e risk of damage or injury.

Intelligent Technology
Intelligent Technology
Electronic Stabilization
Control (ESC)
Description
The ESC increases driving safety . It reduces the
risk of s lipping and improves driving stabi lity.
ESC detects critical situations such as when the
veh icle is oversteer ing and understeering or the
wheels are spinning. The vehicle is stabilized by
apply ing the brakes or reducing eng ine torque .
When ESC engages, the
Ji] ind icator light blinks
in the inst rument cluste r.
The fo llow ing systems are integrated in the ESC:
Anti -lock b raking system (ABS)
ABS prevents the whee ls from locking when brak­
i n g . The vehicle can sti ll be steered even d uring
hard brak ing. Apply steady press ure to the brake
pedal. Do not pump the pedal. A puls ing in the
brake pedal indicates that the system is acting to
stabilize the vehicle.
Brake a ssi st sy stem
The brake assist system can dec rease braking dis­
tance. It increases brak ing power when the driver
presses the brake pedal quick ly in emergency sit­
uations . You must press and hold the brake pedal
until the dangerous situat io n is over . In veh icles
w ith adapt ive c ruise control*, the bra ke assis t
system is more sensitive if the distance detected
to the veh icle dr iv ing ahead is too small. On
ve hicles w ith act ivated and functi oni ng night vi­
sion assist*, the brake assist system can respond
more sensit ively if there is a warning .
Anti-slip regulation (ASR)
A SR red uces eng ine power when the d rive wheels
begin s pinning and ad apts the force to the road
conditions. This makes it easier to sta rt, acceler ­
ate and dr ive up hi lls.
Electronic differential lock (EDL )
EDL applies the brakes to a wheel that sta rts
sp inning and t ransfe rs t he d rive powe r to t he
o ther d riving w heels. This f unct ion is not av aila ­
b le at higher speeds .
126
In extreme cases, ED L automat ically switches off
to keep the b rake on the braked whee l from over­
heating. The veh icle is still working correct ly. ED L
will switc h on again automatically when condi­
tions have returned to normal.
Steering recommendat ion
The E SC he lps to stabili ze the vehicle by changing
the steering torque.
I n veh icles with dyna mic steer ing*, ESC a lso
helps to sta bilize the s teer ing in cr it ica l situa ­
tions.
Selective wheel torque control
Se lective wheel to rque cont rol is used when d riv­
i ng on curves.
The fro nt wheel on the ins ide of the curve or bo th
whee ls on the inside of the curve are braked se­
l ectively as needed. This allows more pre cise d riv­
i ng in cu rves. The applicab le system may no t ac ti­
vate when dr iv ing in we t or snowy condi tio ns.
Automatic post -collision braking system
The "automat ic post-coll is io n braking system"
can help to reduce the risk of sl iding and of addi­
tiona l co llisions after an acc iden t. If the a irbag
c ontro l modu le detects a collision above a cer tain
vehicle speed, the ve hicle is braked by the ESC.
The veh icle does not b rake automatically if:
- the drive r presses the acce lerator pedal, or
- the bra king force generate d by the pressed
brake pedal is greater than the b raking force
that would be in itiated by the system, or
- the ESC, the bra ke system or the vehicle electri­
cal system are not functioning.
A WARNING
- The ESC and its integ rated systems can not
overcome the lim its imposed by natura l
p hys ica l laws. Th is is es pec ially impor tan t
on s lippery or wet roads. If the system s be­
g in a cting to stabilize yo ur vehicle, you
should immedi ately alte r your speed to
match the road and tra ffi c conditions. Do
not let t he i ncreased safety provi ded tempt

Intelligent Technology
Brakes
New brake p ads
New b rake pads do no t achieve the ir full b raking
effect during the firs t 250 mi (400 km) . They
m ust be "broken in" first . The b reak -in period can
be considerably longe r for vehicles with ceram ic
brake rotors* . However, you can compensate for
the slightly reduced braking force by pressing
firm ly on the brake pedal. Avo id heavy braking
during the break-in period .
Wear
Brake pad wear depends largely on the way the
veh icle is driven and on operat ing cond itions.
This is especially true if you are driving frequently
in the c ity and on curves or with a sporty driving
style .
Operating noise
Noises may occur when braking depend ing on the
speed, braking force and outs ide cond itions such
as temperature and humidity.
Noises may become more appare nt at lowe r
speeds due to the nature of the materia ls in the
ceramic brake rotors*.
Effect of water and road salt
I n cer tain s ituations, for example a fter driving
through water, in heavy rain, afte r ove rnig ht con ­
densation or after washing your car, the braking
effect can be red uced by moisture or ice on the
brake rotors and b rake pads . The brakes must be
"dr ied" first w ith a few care ful b rake applica­
tions .
At higher speeds and with the windshie ld wipers
turned on, the brake pads press aga inst the brake
rotors for a short amount of time. T his action,
which is no t felt by the driver, happens at regular
i n tervals a nd ensu res a better react ion time for
the bra kes in wet weather.
The braking effect can also be reduced if you are
driving on salted roads a nd you do not apply the
brakes fo r long pe riods of time. The laye r of salt
o n th e brake roto rs and pads mus t be wo rn off
fi rs t when the brakes are app lied.
128
D ue to its s urface, the ce ram ic brake rotor * ab ­
sorbs moisture in ce rtain situations. The refore,
there will tempora rily be less brak ing fo rce than
whe n the brakes are d ry . You can compensate for
th is by press ing the brake pedal harder.
Corrosion
Leav ing the ve hicl e pa rked for long periods of
time , low mileage and avoiding heavy b raking
can contrib ute to corros ion on the b rake roto rs
and to dirty brake pads.
If you usua lly avoid heavy bra king or if there is
cor rosion p resent, occasiona l heavy brak ing at
high speeds is recommended to clean the brake
rotors and pads
c> ,& .
Brake system malfunction
if you no tic e th at the b rake peda l t ravel has sud­
denly
increase d, then a bra ke circuit in the dua l­
c ir cuit b rake system may have malfunctioned.
D rive to an authorized A udi dealer or authorized
Audi Service Facility immed iate ly to have the
problem corrected . On the way there, drive w ith
reduced sp eed and keep in m ind that you wilt
need a longe r distance to stop and you will need
to press the b rake peda l ha rder.
Low b rake fluid level
When the brake fluid level is low, malfunctions in
the b rake system may occur . The brake fl uid level
i s e lec tronically moni to red.
Brake booster
The brake booster amp lifies the pressure you ap­
ply to the brake pedal. It only wor ks when the en­
gine is running.
A WARNING
- On ly app ly the brakes for the purpose of
cleani ng the bra ke sys tem w hen road and
t raffic cond itions permit. You must not en­
da nger ot her roa d users . T h is i ncreases the
r isk of an acci den t.
-
- Never le t th e ve hicle roll while t he engi ne is
stop ped bec ause this increa ses the r is k of an
a cciden t. ..,.

0 co .... N ,..._
N .... 0 0 :c ' -New brake pads do not achieve their fu ll
brak ing effect during the first 250 mi
(400 km). They must be "broken in" first.
However, you can compensate for the
sl ightly reduced braking force by pressing
firmly on the brake pedal. Avoid heavy brak­
ing dur ing the b reak-in per iod.
- Certa in weather and operat ing cond it ions
such as dr iving t hrough water, d riving in
heavy ra in or d riving after washing your ve­
hicle ca n impair the effectiveness of the
bra kes . In the w inter, ice may b uild up on
the brake pads, rotors and drums . Check
these components by braking carefu lly. Ap­
plying the brakes carefu lly several times
dr ies the brakes and removes ice bu ild-up.
- The effic iency of the brakes can also be im­
paired by driving for long st retches on roads
cove red w ith salt without using the b rakes.
Yo u can remove sa lt deposits from the
bra ke rotors and pads by caref ully applyi ng
the brakes severa l t imes .
- If the front spoiler is damaged or you install
another spoiler, ma ke sure the front wheel
bra kes are vent ilated prope rly. O therwise,
the br ake system could overheat, wh ic h re­
duces the ir effectiveness.
- Failure of a brake circui t impai rs b raking
perfo rmance, whi ch incre ases bra king dis­
tance . Avoi d driving the vehicle and have it
towed it to the nearest author ized Audi
dealer or authorized A udi Se rvice Facility .
- If the bra ke booster is not wor king, you will
have to press m uch ha rder on the bra ke
peda l to compensate for the lack of the
booster.
(D Note
- Never let the brakes "rub" by pressing the
pedal lightly when braking is not actually
necessary. This causes the brakes to over­
heat and inc reases braking d istance and
causes wear.
- Before driving downh ill a long distance on a
steep h ill, decrease your speed and select a
l ower gear. This makes use of the engine
braking effect and relieves the brakes . If Intellig
ent Technology
you need to bra ke ad ditiona lly, bra ke in in­
terva ls and not continuous ly .
(D Tips
- If the brake boos ter is not wor king, you
must press the brake peda l with much more
force than normal.
- If you retrof it your vehicle with a front spo il­
er, wheel covers or simi lar items, make su re
that the air f low to the front wheels is not
inter rupted. Otherwise the b rake system
can become too hot.
Electromechanical
steering., dynamic
steering
The electromechanical steering supports the
driver's steering movements.
Power s teer ing adapts electronically based on
the ve hicle speed .
Indicator lights and messages
• Do not dr ive vehicle: Steering defective
If this indicator light turns on and stays on and
t hi s message appears, the power steering may
have failed.
Stop the vehicle in a safe location as soon as pos­ s ible. Do
not cont inue drivi ng. See an authorized
Audi dealer or authorized Audi Service Fac il ity for
ass ista nce.
l;rj Steering: System fault You can continue
driving
If the indicator light turns on and the message
appears, the steering wheel may be more d iffi ­
cu lt to move or m ore sensitive than usual. The
steering wheel may also be at an angle when
driv ing stra ight .
Drive slowly to an a uthorized Audi dea ler or au­
thori zed Audi Serv ice Facility to have the mal­
funct ion corrected .
'T-ij Dynamic stee ring: Initializing
If the indicato r ligh t is blinking and this mess age
appe ars, dynamic steering* is be ing ini tialized. .,.
129

able to provide you with more in­
formation .
® Mud and snow capability
"M/5" or "M+S" indicates the tire
has properties making it suitable
to drive in mud or snow .
& indi­
cates a winter tire .
@Composition 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 materials
used in the tire. These inc lude
steel, nylon, polyester 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,
traction and temperature resistance
Tread wear, traction and temper ­
ature ranges ¢
page 300.
0 @ Running direction
"' -~ The arrows indicate the running
-~ direction of unidirectional tires . ...
Wheels
You must always follow the speci­
fied runn ing d irect ion
¢ page 319 .
@ Maximum permitted
inflation pressure
This number indicates the maxi ­
mum pressure to which a tire can
be inflated unde r normal operat­
ing condit ions.
Glossary of tire and loading
terminology
Accessory weight
means the comb ined weigh t (in
excess of those standard items
which may be replaced) of auto­
matic transm ission, power steer­
ing , power brakes, power win­
dows, power seats, radio, and
heater, to the extent that these
items are available as facto ry-in­
stalled equipment (whether in ­
stalled or not) .
Aspect ratio
means the ratio of the heigh t to
the width of the tire in percent .
Numbers of 55 or lowe r indicate a
low sidewa ll for improved steer­
ing response and better overall
handling on dry pavement. .,.
285

0
"' -N
" N
-0
0
:c ...
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight, and
(d) Production options we ight
Ma ximum (permissible)
inflation pressure
means the maximum cold infla­
tion pressure to which a t ire may
be inflated. Also called "maxi­
mum inflation pressure."
Normal occupant weight
means 150 lbs. (68 kilograms)
times the number of occupants
seated in the veh icle up to the to­
tal seating capacity of your vehi­ c le.
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, including
elevations due to labeling, deco­
rations, or protective bands or
ribs .
Wheels
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 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 battery, and
special trim .
Radial ply tire
means a pneumatic tire in which
the ply cords that extend to the beads are laid at substantially 90
degrees to the centerline of the
tread.
Recommended inflation
pressure
see ~ page 286, 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 .,.
287