wheel Seat Arona 2018 Manual PDF

Operation
● Sw it
c
h off the ignition and switch it on
again.
● OR: accelerate above 10 km/h (6 mph) be-
for
e reducing speed below this number
again.
● OR: place the selector lever in position P
and then mov
e it from this position.
● OR: switch on and off the automatic activa-
tion in the Ea
sy Connect system menu.
The automatic activation with parking aid
miniature indication can be switched on and
off from the Easy Connect system menu
›››  page 34:
● Switch the ignition on.
● Select:  button > Settings
> Parking
and manoeuvring .
● Select the Automatic activation op-
tion. When the f
u

nction button check box is
activated , the function is on.
If the system has been activated automatical-
ly, an audible sound warning will only be giv-
en when obstacles in front are at a distance
of less than 50 cm. CAUTION
The automatic connection of the Parking Aid
only w

orks when you are driving slowly. If
driving style is not adapted to the circum-
stances, an accident and serious injury or
damage may be caused. Segments of the visual indication
Fig. 218
Parking Aid display on the Easy Con-
nect sy
s

tem screen. The distance of separation from the obstacle
c
an be e
s

timated using the segments around
the vehicle.
The optical indication of the segments works
as follows:
a white segment is dis-
played when the obstacle is not within
the vehicle's trajectory or the direction
of travel is in the opposite direction to
its location, and it is more than 30 cm
from the vehicle.
obstacles located in the
vehicle's trajectory and which are more
than 30 cm away from the vehicle are
displayed in yellow.
White segments:
Yellow segments: obstacles that are less than
30 cm aw

ay from the vehicle are dis-
played in red.
Moreover, with the SEAT Media System
Plus/Navi System radios, a yellow trail indi-
cates the vehicle's expected journey based
on the steering wheel angle.
Whenever the obstacle is located in the vehi-
cle’s direction of travel, the corresponding
audible warning will sound.
As the vehicle approaches an obstacle, the
segments are displayed closer to the vehicle.
When the penultimate segment is displayed,
this means that the vehicle has reached the
collision zone. In the collision zone, the ob-
stacles are represented in red, including
those out of the path. Do not continue to
move forward (or backward) ››› in General
inf orm
ation on p

age 240, ››› in General in-
f orm
ation on p
age 240 !
Adjusting the display and audible
warning
s The settings for the display and audible
w
arnin
g

s are controlled via the Easy Con-
nect*.
Automatic activation
 on – activates the Automatic activa-
tion option ››› page 243.
Red segments:
244

Operation
Parking and manoeuvring with the
r e
ar a
ssist Fig. 221
Display on the Infotainment system
s c
r

een: orientation lines. Switching the system on and off
●
The rear assist will switch on when the igni-
tion i s
on or the en

gine running, on engaging
reverse gear (manual gearbox) or on chang-
ing the selector lever to the R position (auto-
matic gearbox).
● The system switches off 8 seconds after
diseng
aging reverse gear (manual gearbox)
or removing the selector lever from the R po-
sition (automatic gearbox). The system will
also disconnect immediately after the igni-
tion is switched off. ●
The camera w
ill stop transmitting images
above the speed of 15 km/h (9 mph) with re-
verse engaged.
In combination with the Parking System Plus
››› page 240, the camera image will cease to
be transmitted immediately when reverse
gear is disengaged or when the selector lever
is moved from the R position, and the optical
information provided by the Parking Aid sys-
tem will be displayed.
Also in combination with the system, the rear
assist image can also be concealed:
● By pressing one of the Infotainment system
button
s on the display.
● OR: By pressing the miniature vehicle that
appe
ars on the left of the screen (which
switches to the full-screen mode of the Park-
ing System Plus's optical system).
If you wish to display the rear assist image
again:
● Disengage reverse, or change the selector
lever's
position, engage reverse again or
move the selector lever to position R.
● OR: Press the RVC fu
nction button1)Meaning of the orientation lines
›››
Fig. 221
Side lines: extension of the vehicle (the
approximate width of the vehicle plus the
rear view mirrors) on the road surface.
End of the side lines: the area marked in
green ends approximately 2 m behind
the vehicle on the road surface.
Intermediate line: indicates a distance of
approximately 1 m behind the vehicle on
the road surface.
Red horizontal line: indicates a safe dis-
tance of approximately 40 cm at the rear
of the vehicle on the road surface.
Parking manoeuvre
● Place the vehicle in front of the parking
spac
e and engage reverse gear (manual
gearbox) or move the selector to the R posi-
tion (automatic gearbox).
● Reverse slowly, and turn the steering wheel
so that the s
ide orientation lines lead to-
wards the parking space.
● Guide the vehicle into the parking space so
that the s
ide orientation lines run parallel to
it. 1
2
3
4
1)
WARNING: the RVC (Rear
View Camera) function
button will only be activated and available when the
reverse gear is engaged or the selector lever is set to
position R.
248

Towing bracket device
Anti-theft alarm When the vehicle is locked, the alarm is trig-
ger
ed when the el
ectrical connection be-
tween vehicle and trailer is interrupted.
Always turn off the anti-theft alarm system
before connecting or disconnecting a trailer
››› page 138.
Conditions for the integration of a trailer in
the anti-theft alarm system.
● The vehicle is factory-equipped with an an-
ti-theft al

arm system and a towing bracket
device.
● The trailer is connected electrically to the
tow
ing vehicle by the trailer connector.
● The electrical system of the vehicle and the
trail
er are prepared for operation.
● The vehicle is locked with the ignition key
and the anti-theft al
arm system is activated.CAUTION
For technical reasons, trailers fitted with rear
LED lights ar

e not integrated in the anti-theft
alarm system. Driving tips
Driving with a trailer always requires extra
c
ar e. W

eight distribution
The weight di
stribution of a loaded trailer
with an unladen vehicle is very unfavourable.
However, if this cannot be avoided, drive ex-
tra slowly to allow for the unbalanced weight
distribution.
Speed
The stability of the vehicle and trailer is re-
duced with increasing speed. For this reason,
it is advisable not to drive at the maximum
permissible speed in an unfavourable road,
weather or wind conditions. This applies es-
pecially when driving downhill.
You should always reduce speed immediately
if the trailer shows the slightest sign of snak-
ing. Never try to stop the “snaking” by in-
creasing speed.
Always brake in due course. If the trailer has
an overrun brake, apply the brakes gently at
first and then, firmly. This will prevent the
jerking that can be caused by locking of trail-
er wheels. Select a low gear in due course
before going down a steep downhill. This en-
ables you to use the engine braking to slow
down the vehicle.
Reheating
At very high temperatures and during pro-
longed slopes, driving in a low gear and high
engine speed, always monitor the coolant
temperature gauge ››› page 120. Electronic stability control*
The ESC* sys
tem helps to stabilise the trailer
in case of skidding or rocking.
Retrofitting a towing bracket* Fig. 235
Attachment points for towing brack-
et . » 257
Technical data
Advice
Operation
Emergencies
Safety

Care and maintenance
WARNING
● Car -c
are products can be toxic. Because of
this, they must always be kept closed in their
original container. Keep them out of the reach
of children. Failure to comply could result in
poisoning.
● Always read and observe the instructions
and warning
s on the package before using
car-care products. Improper use could cause
health problems or damage the vehicle. The
use of certain products may produce noxious
vapours; they should be used in well ventila-
ted areas.
● Never use fuel, turpentine, engine oil, nail
varnish r
emover or other volatile fluids.
These are toxic and highly flammable. Risk of
fire and explosion.
● Before washing your vehicle, or carrying
out any
maintenance, switch the engine off,
apply the handbrake firmly and remove the
key from the ignition. CAUTION
Never attempt to remove dirt, mud or dust if
the sur f

ace of the vehicle is dry. Never use a
dry cloth or sponge for cleaning purposes.
This could damage the paintwork or the win-
dows of your vehicle. Soak dirt, mud or dust
with plenty of water. For the sake of the environment
● When pur c

hasing car care products, try to
select ones that are not harmful to the envi-
ronment.
● The waste from car-care products should
not be dis
posed of with ordinary household
waste. Observe the disposal information on
the package. Care of the vehicle exterior
Autom atic

car wash tunnel The vehicle paintwork is so durable that the
v
ehic
l

e can normally be washed without
problems in an automatic car wash tunnel.
However, the paintwork wear depends to a
large extent on the kind of the car wash tun-
nel, the brushes used, its water filtering and
the type of cleaning and preservative prod-
ucts.
Before going through a car wash, be sure to
take the usual precautions (close the win-
dows and rear-view mirrors). There is nothing
to note apart from that.
If the vehicle has special accessories such as
spoilers or a roof rack or two-way radio aerial,
etc., it is advisable to consult the car wash
tunnel operator first. After washing, the brake

s could take some
time to respond as the brake discs and pads
could be wet, or even frozen in winter. “Dry”
the brakes by braking several times. WARNING
Water, ice and salt on the brake system can
reduc e br

aking effectiveness. Risk of acci-
dent. Hand-washing
Vehicle washing
– First soften the dirt and rinse it off with wa-
ter
.
– C

lean your vehicle from top to bottom with
a soft s
ponge, a glove or a brush. Use very
light pressure.
– Rinse the sponge or glove often with clean
water

.
– Special car shampoo should only be used
for v

ery stubborn dirt.
– Leave the wheels, sill panels etc. until last,
usin

g a different sponge or glove.
– Rinse the vehicle thoroughly with water.
– Dry the vehicle surface gently with a cha-
mois l

eather.
– In cold temperature, dry the rubber seals
and their sur

faces to prevent them from »
261
Technical data
Advice
Operation
Emergencies
Safety

Advice
freezing. Apply silicone spray to the rubber
se al
s.
Af
ter washing the vehicle
– After washing, avoid sudden and sharp
brakin

g. “Dry” the brakes by braking sever-
al times. WARNING
● Wa sh

your vehicle with the ignition switch-
ed off.
● Protect your hands and arms from cuts on
sharp meta
l edges when cleaning the under-
body, the inside of the wheel housings etc.
Risk of injury.
● Water, ice and salt on the brake system can
reduce br
aking effectiveness. Risk of acci-
dent. CAUTION
● Never r emo

ve dirt, mud or dust if the vehi-
cle surface is dry. Never use a dry cloth or
sponge for cleaning purposes. This could
scratch the paintwork or glass on your vehi-
cle.
● Washing the vehicle in low temperatures:
when washin
g the vehicle with a hose, do not
direct water into the lock cylinders or the
gaps around the doors. Risk of freezing. For the sake of the environment
To protect the environment, the vehicle
shoul d be w

ashed only in specially provided
wash bays, to prevent toxic, oil-laden waste
water from entering the sewer system. In
some places, washing vehicles outside wash
bays is prohibited. Note
Do not wash the vehicle in direct sunlight. Washing the vehicle with a high pres-
s
ur
e c

leaner Be particularly careful when using a high
pr
e
s

sure cleaner!
– Always observe the instructions for the
high-pres

sure cleaner, particularly those
concerning the pressure and the spraying
distance.
– Increase the spraying distance for soft ma-
terial

s and painted bumpers.
– Do not use a high pressure cleaner to re-
move ic

e or snow from windows
››› page 263.
– Never use concentrated jet nozzles (“rotat-
ing jets”) ›

›› .–
Af t
er w

ashing, avoid sudden and sharp
braking. “Dry” the brakes by braking sever-
al times ››› page 179. WARNING
● Never w a

sh tyres with a concentrated jet
(“rotating nozzle”). Even at large spraying
distances and short cleaning times, damage
can occur to the tyres. This may cause an ac-
cident.
● Water, ice and salt on the brake system can
reduce br
aking effectiveness. Risk of acci-
dent. CAUTION
● Do not u se w

ater hotter than +60°C
(+140°F). This could damage the vehicle.
● To avoid damage to the vehicle, keep a suf-
ficient di
stance from sensitive materials such
as flexible hoses, plastic, soundproofing ma-
terial, etc. This also applies to bumpers pain-
ted in the colour of the bodywork. The closer
the nozzle is to the surface, the greater the
wear on the material. Factory-fitted adhesive sheets
The following indications should be taken in-
t
o ac
c

ount to avoid damaging adhesive
sheets:
● Do not use high pressure cleaners.
262

Care and maintenance
Steel wheel rims –
Clean steel wheel rims regularly using a
separ at
e sponge.
Use an industrial cleaner to remove brake
dust. Any damage to the paint on steel wheel
rims should be repaired before starting to
rust. WARNING
● Never w a

sh tyres with a cylindrical jet. Even
at large spraying distances and short clean-
ing times, damage can occur to the tyres.
This may cause an accident.
● Water, ice and salt on the brake system can
reduce br
aking effectiveness. Risk of acci-
dent. Directly after washing, avoid sudden
and sharp braking. “Dry” the brakes by brak-
ing several times ››› page 179, Braking ca-
pacity and braking distance .Alloy wheel rims
Every two weeks
– Wash salt and brake dust from alloy
wheel s.
– Use an ac

id free detergent to clean the
wheel rims.
Ev

ery 3 months
– Apply a hard wax compound to the wheels. Alloy wheels require regular attention to pre-
serve their ap

pearance. If road salt and brake
dust are not often removed, the aluminium
finish will be impaired.
Always use an acid-free detergent for alloy
wheel rims.
Car polish or other abrasive agents should
not be used for maintaining the rims. If the
protective coating is damaged, e.g. by flying
stones, the damaged area should be re-
paired immediately. WARNING
Observe the safety warnings ›››
in Steel
wheel rims on p
age 265. Vehicle underbody protection
The vehicle underbody is coated to protect it
fr
om c
hemic

al and mechanical damage.
The protective coating can be damaged when
driving. We recommend that you check the
protective coating under the body and on the
running gear, and retouch it if necessary, be-
fore and after the winter season.
We recommend that you go to your Technical
Service to carry out repair work and addition-
al anti-corrosion work. WARNING
Do not apply underseal or anti-corrosion
co atin

gs to the exhaust pipes, catalytic con-
verter or the heat shields on the exhaust sys-
tem. The heat of the exhaust system or the
engine could cause them to ignite. Risk of
fire. Cleaning engine compartment
Take special care when cleaning the engine
comp
ar

tment.
Anti-corrosion treatment
The engine compartment and the surface of
the power unit are given anti-corrosion treat-
ment at the factory.
Good corrosion protection is particularly im-
portant in winter when the vehicle is fre-
quently driven on salted roads. To prevent
the salt corroding the vehicle, the entire en-
gine compartment should be thoroughly
cleaned before and after winter.
Technical Services have the proper products
for cleaning and preservation as well as the
necessary workshop equipment. For this rea-
son, we recommend having this work per-
formed by them.
The anti-corrosion protection is usually re-
moved if the engine compartment is cleaned
with grease removing solutions, or if you »
265
Technical data
Advice
Operation
Emergencies
Safety

Advice
have the engine cleaned. On commissioning
thi s
w
ork, ensure that all surfaces, seams,
joints and components in the engine com-
partment are given anti-corrosion treatment. WARNING
● When work in

g in the engine compartment,
always observe the safety warnings
››› page 273.
● Before opening the bonnet, switch the en-
gine off, app
ly the handbrake firmly and al-
ways remove the key from the ignition.
● Allow the engine to cool before you clean
the engine comp
artment.
● Do not clean, for example, the vehicle un-
derbody, wheel ar
ches or wheel trims without
protecting your hands and arms. You may cut
yourself on sharp-edged metal parts. Failure
to comply could result in injury.
● Moisture, ice and salt on the brake system
may
affect braking effectiveness. Risk of acci-
dent. Directly after washing, avoid sudden
and sharp braking.
● Never touch the radiator fan. It is tempera-
ture-c
ontrolled and could start automatically,
even when the key is removed from the igni-
tion! For the sake of the environment
Fuel, grease and oil deposits can be removed
when the engine i s

washed. The polluted wa-
ter must be cleaned in an oil separator. For
this reason, engine washing should be car- ried out only by a specialised workshop or a
petro
l

station. Caring for the vehicle interior
Scr een f

or the radio/Easy Connect*
and control panel* The display can be cleaned with a soft cloth
and a prof
e

ssionally available “LCD cleaner”.
Moisten the cloth with a small amount of the
cleaning fluid.
The Easy Connect control panel* should first
be cleaned with a brush so that no dirt goes
into the device or between the keys and
housing. Next, we recommend cleaning the
Easy Connect control panel* using a cloth
dampened with water and washing-up liquid. CAUTION
● To av oid s

cratching the screen, do not wipe
the display with a dry cloth.
● To avoid damage, ensure that no liquid
goes
into the Easy Connect control panel*. Cleaning plastic parts and the dash
p
anel –
Use a clean, damp cloth to clean plastic
par ts

and the dash panel. –
If this
does not provide satisfactory results,
use a special solvent-free plastic cleaning
product. WARNING
Never clean the dash panel and the airbag
modul e s

urface with cleaners containing sol-
vents. Solvents cause the surface to become
porous. If the airbag triggered, plastic parts
could become detached and cause injuries. CAUTION
Cleaning products which contain solvents will
dam ag

e the material. Cleaning wooden trim*
–
Clean the wooden trim with a water-mois-
tened c
l

ean cloth.
– If this does not provide satisfactory results,
use a gen

tle soap solution. CAUTION
Cleaning products which contain solvents will
dam ag

e the material. Cleaning textile covers and trim parts
Textile covers and trim parts (e.g. seats, door
trim) shou
l
d be c

leaned regularly with a
266

Advice
seek medical care immediately. Neutralise
any
ac
id splashes on the skin or clothing
with a soapy solution, and rinse off with plen-
ty of water. If acid is swallowed by mistake,
consult a doctor immediately.
● Fires, sparks, open flames and smoking are
prohibit
ed. When handling cables and electri-
cal equipment, avoid causing sparks and
electrostatic charge. Never short the battery
terminals. High-energy sparks can cause in-
jury.
● A highly explosive mixture of gases is re-
lea
sed when the battery is under charge. The
batteries should be charged in a well-ventila-
ted room only.
● Keep children away from acid and batteries.
● Before working on the electrical system,
you mus
t switch off the engine, the ignition
and all electrical devices. The negative cable
on the battery must be disconnected. When a
light bulb is changed, you need only switch
off the light.
● Deactivate the anti-theft alarm by unlock-
ing the v
ehicle before you disconnect the bat-
tery! The alarm will otherwise be triggered.
● When disconnecting the battery from the
vehicl
e on-board network, disconnect first
the negative cable and then the positive ca-
ble.
● Switch off all electrical devices before re-
connecting the b
attery. Reconnect first the
positive cable and then the negative cable.
Never reverse the polarity of the connections.
This could cause an electrical fire. ●
Never c h

arge a frozen battery, or one which
has thawed. This could result in explosions
and chemical burns. Always replace a battery
which has frozen. A flat battery can also
freeze at temperatures close to 0°C (+32°F).
● Ensure that the vent hose is always connec-
ted to the b
attery.
● Never use a defective battery. This could
cause an e
xplosion. Replace a damaged bat-
tery immediately. CAUTION
● Nev er di s

connect the battery if the ignition
is switched on or if the engine is running.
This could damage the electrical system or
electronic components.
● Do not expose the battery to direct sunlight
over a lon
g period of time, as the intense ul-
traviolet radiation can damage the battery
housing.
● If the vehicle is left standing in cold condi-
tions f
or a long period, protect the battery
from “freezing”. If it freezes it will be dam-
aged. Warning lamp

It lights up
Alternator fault. The control lamp
 lights up when the igni-
tion i s

switched on. It should go out when the
engine has started running.
If the control lamp  lights up while driving,
the alternator is no longer charging the bat-
tery. You should immediately drive to the
nearest specialised workshop.
You should avoid using electrical equipment
that is not absolutely necessary because this
will drain the battery.
Checking the battery electrolyte level The electrolyte level should be checked regu-
l
arly
in high-mi

leage vehicles, in hot coun-
tries and in older batteries.
– Open the bonnet and open the battery cov-
er at the front

››› in Safety notes for work
in the en gine c
omp
artment on page 273
››› in Symbols and warnings on handling
the b att
er

y on page 281. For vehicles with
the battery under the spare wheel, open
the rear lid and lift the floor covering. The
battery is located next to the spare wheel.
– Check the colour display in the "magic eye"
on the top of the b

attery.
– If there are air bubbles in the window, tap
the window g

ently until they disperse.
282

Wheels
The position of the battery is shown in the
c orr
e
sponding engine compartment diagram
››› page 275.
The “magic eye” indicator, located on the top
of the battery changes colour, depending on
the charge state and electrolyte level of the
battery.
There are two different colours:
● Black: correct charge status.
● Transparent/clear yellow: the battery must
be repl
aced. Contact a specialised workshop.
Charging or changing the battery The battery is maintenance-free and is
c
hec
k

ed during the inspection service. All
work on the vehicle battery requires special-
ist knowledge.
If you often drive short distances or if the ve-
hicle is not driven for long periods, the bat-
tery should be checked by a specialised
workshop between the scheduled services.
If the battery has discharged and you have
problems starting the vehicle, the battery
might be damaged. If this happens, we rec-
ommend you have the vehicle battery
checked by a Technical Service where it will
be re-charged or replaced. Charging the battery
The vehic

le battery should be charged by a
specialised workshop only, as batteries us-
ing special technology have been installed
and they must be charged in a controlled en-
vironment.
Replacing a vehicle battery
The battery has been developed to suit the
conditions of its location and has special
safety features.
Genuine SEAT batteries meet the mainte-
nance, performance and safety specifications
of your vehicle. WARNING
● We r ec

ommend you use only maintenance-
free or cycle free leak-proof batteries which
comply with standards T 825 06 and
VW 7 50 73. This standard applies as of
2001.
● Before starting any work on the batteries,
you mus
t read and observe the warnings
››› in Symbols and warnings on handling
the batt er

y on page 281. For the sake of the environment
Batteries contain toxic substances such as
su lphuric

acid and lead. They must be dis-
posed of appropriately and must not be dis-
posed of with ordinary household waste. Wheels
Wheel s
and ty

res
General notes Avoiding damage
– If you have to drive over a kerb or similar
ob s

tacle, drive very slowly and at a right
angle.
– Keep grease, oil and fuel off the tyres.
– Inspect the tyres regularly for damage
(cuts, c r

acks or blisters, etc.). Remove any
foreign objects embedded in the treads.
Storing tyres
– When you remove the tyres, mark them in
order to m

aintain the same direction of ro-
tation when they are installed again.
– When removed, the wheels and/or tyres
should be s

tored in a cool, dry and prefera-
bly dark location.
– Store tyres in a vertical position, if they are
not fitted on wheel

rims.
New tyres
New tyres must be run in ›››
page 197.
The tread depth of new tyres may vary, ac-
cording to the type and make of tyre and the
tread pattern. »
283
Technical data
Advice
Operation
Emergencies
Safety

Advice
Concealed damage
Dam ag
e t
o tyres and rims is often not readily
visible. If you notice unusual vibrations or the
vehicle pulling to one side, this may indicate
that one of the tyres is damaged. They
should be checked immediately by a Techni-
cal Service.
Tyres with directional tread pattern
An arrow on the tyre sidewall indicates the di-
rection of rotation on tyres with directional
tread. Always observe the direction of rota-
tion indicated when fitting the wheel. This
guarantees optimum grip and helps to avoid
aquaplaning, excessive noise and wear. WARNING
● New tyr e

s do not have maximum grip dur-
ing the first 500 km. Drive particularly care-
fully to avoid possible accidents.
● Never drive with damaged tyres. This may
cause an ac
cident.
● If you notice unusual vibrations or if the ve-
hicle p
ulls to one side when driving, stop the
vehicle immediately and check the tyres for
damage. Tyre pressure monitoring system
Fig. 239
Location of the tyre pressure sticker. The maximum tyre pressure values are shown
on a s
tic
k

er stuck to the back of the left front
door frame ›››
Fig. 239.
1. Read the required tyre inflation pressure from the stic
ker. The values refer to Sum-
mer tyres.
2. The tyre pressures should only be checked when the tyre
s are cold. The slightly raised
pressures of warm tyres must not be re-
duced.
3. Adjust the tyre pressure to the load you are carr
ying. Tyre pressure
The correct

tyre pressure is especially impor-
tant at high speeds. The pressure should
therefore be checked at least once a month
and before starting a journey.
Depending on the vehicle, tyre pressure can
be adjusted to medium load to improve driv-
ing comfort (“comfort” tyre pressure). When
driving with comfort tyre pressure fuel con-
sumption may increase slightly. WARNING
A tyre can easily burst if the pressure is too
low , c

ausing an accident!
● At continuously high speeds, a tyre with in-
sufficient
pressure flexes more. In this way it
becomes too hot, and this can cause tread
separation and tyre blow-out. Always observe
the recommended tyre pressures.
● If the tyre pressure is too low or too high,
the tyre
s will wear prematurely and the vehi-
cle will not handle well. Risk of accident! For the sake of the environment
Under-inflated tyres will increase fuel con-
sumption. 284