speed Seat Leon 5D 2012 Manual PDF

223
Wheels and tyres
Wheels and tyres
Wheels
General notes
– When driving with new tyres, be especially careful during the
first 500 km (300 miles).
– If you have to drive over a kerb or similar obstacle, drive very
slowly and as near as possible at a right angle to the obstacle.
– Check from time to time if the tyres are damaged (punctures,
cuts, cracks or dents). Remove any foreign objects embedded in
the treads.
– Damaged wheels and tyres must be replaced immediately.
– Keep grease, oil and fuel off the tyres.
– Replace any missing valve caps as soon as possible.
– Mark the wheels before taking them off so that they rotate in
the same direction when put back.
– When removed, the wheels or tyres should be stored in a cool,
dry and preferably dark place.
New tyres
New tyres do not give maximum grip straight away and should therefore be
“run in” by driving carefully and at moderate speeds for about the first 500
km (300 miles). This will also increase the useful life of the tyres. The tread depth of new tyres may
vary, according to the type and make of
tyre and the tread pattern.
Concealed damage
Damage to tyres and rims is often not readily visible. If you notice unusual
vibration or the car pulling to one side, this may indicate that one of the
tyres is damaged. Reduce speed immediately if there is any reason to sus-
pect that damage may have occurred. Inspect the tyres for damage. If no ex-
ternal damage is visible, drive slowly and carefully to the nearest special-
ised workshop and have the car inspected.
Tyres with directional tread pattern
An arrow on the tyre sidewall indicates the direction of rotation on single
drive tyres. Always note the direction of rotation indicated when mounting
the wheel. This guarantees optimum grip and helps to avoid aquaplaning,
excessive noise and wear.
Retrofitting Accessories
If you wish to change or fit wheels, rims or wheel trims, we recommend that
you consult with a SEAT Official Service centre for advice regarding current
techniques. 
Useful life of tyres
Correct inflation pressures and sensible driving habits will
increase the useful life of your tyres.
– Check tyre pressure at least once a month, and also prior to any
long trip. 
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224Wheels and tyres
–The tyre pressure should only be checked when the tyres are
cold. The slightly raised pressures of warm tyres must not be re-
duced.
– Adjust tyre pressure to the load being carried by the vehicle.
– In vehicles with a tyre pressure indicator, save the pressure of
modified tyres ⇒ page 175, ⇒  page 223.
– Avoid fast cornering and hard acceleration.
– Inspect the tyres for irregular wear from time to time.
The useful life of your tyres depends on the following factors:
Tyre pressure
Tyre pressure values are indicated on the inside of the fuel tank flap.
Insufficient or excessive pressure greatly reduces the useful life of the tyres
and adversely affects vehicle performance and ride. Correct inflation pres-
sures are very important, especially at high speeds.
If you want a more comfortable ride, you can inflate tyres to the pressure
corresponding to the normal vehicle load (up to 3 people) if the vehicle is
carrying a normal load. If the vehicle is going to carry the maximum load,
the tyre pressure should be increased to maximum value indicated.
The tyre pressure must be adjusted according to the load the vehicle is car-
rying. We recommend adhering to the tyre pressure specifications for a max-
imum load.
Do not forget the spare wheel when checking the tyre pressures: Keep the
spare wheel inflated to the highest pressure required for the road wheels.
In the case of a minimised temporary spare wheel (125/70 R16 or 125/70
R18) inflate to a pressure of 4.2 bar as indicated on the tyre pressure label
on the fuel tank flap. Driving style
Fast cornering, heavy acceleration and hard braking (squealing tyres) all in-
crease tyre wear.
Wheel balance
The wheels on new vehicles are balanced. However, certain circumstances
may lead to imbalance (run-out), which is detected as vibrations in the
steering wheel.
Unbalanced wheels should be rebalanced, as they otherwise cause exces-
sive wear on steering, suspension and tyres. A wheel must also be reba-
lanced when a new tyre is fitted or if a tyre is repaired.
Incorrect wheel alignment
Incorrect wheel alignment causes excessive tyre wear, impairing the safety
of the vehicle. If you notice excessive tyre wear, you should check wheel
alignment at a SEAT Official Service.
WARNING
● Always adapt the tyre pressure accordingly when the vehicle load
changes.
● A tyre with low air pressure has to flex a lot more when the vehicle is
heavily loaded or at high speeds, therefore causing overheating to occur.
Under these conditions, the tyre bead may be released or the tyre may
burst. Risk of accident!
For the sake of the environment
Under-inflated tyres will increase fuel consumption. 

225
Wheels and tyres
Indications of wear
Tread wear indicators indicate if a tyre is worn.
Fig. 115 Tyre tread:
tread wear indicators
The original tyres on your vehicle have 1.6 mm high “tread wear indicators”
running across the tread. Depending on the manufacturer, there will be 6 to
8 of them spaced at equal distances around the tyre. Markings on the tyre
sidewall (for instance the letters “TWI” or a triangle) indicate the positions
of the tread wear indicators.
The minimum tread depth required by law is 1.6 mm (measured in the tread
grooves next to the tread wear indicators). (Different figures may apply in
other countries.)
WARNING
The tyres must be replaced at the latest when the tread is worn down to
the tread wear indicators. Failure to do so could result in an accident.
● Especially in difficult driving conditions such as wet or icy roads, it is
important that the tyres have sufficient tread depth. The tread depth
should same on the tyres of both the front and the rear axles.
● The decrease in driving safety due to insufficient tread depth is par-
ticularly evident in vehicle handling, when there is a risk of aquaplaning
in deep puddles of water and when driving through corners. Braking is
also adversely affected.
● The speed has to be adapted accordingly, otherwise there is a risk of
losing control over the vehicle.

Changing wheels
Fig. 116 Changing
wheels around 
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226Wheels and tyres
To ensure that the wear is equal on all tyres the wheels should be changed
round from time to time according to the system ⇒ Fig. 116. The useful life
of all the tyres will then be about the same time. 
Replacing wheels and tyres
It is important to use the correct wheels and tyres when re-
placement is necessary.
– All four wheels must be fitted with tyres of the same type, size
(rolling circumference) and preferably the same tread pattern.
– Tyres should be replaced at least in pairs and not individually
(i.e. both front tyres or both rear tyres together).
– Do not use tyres whose effective size exceeds the dimensions
of the factory-approved makes of tyre.
– If you wish to fit the vehicle with rims or tyres that are different
to those installed in manufacture, it is advisable to consult a
SEAT Official Service before purchasing them.
The tyres and wheel rims are an essential part of the vehicle's design. The
tyres and rims approved by SEAT are specially matched to the characteris-
tics of the vehicle and make a major contribution to good roadholding and
safe handling ⇒ 
.
The sizes of the rims and tyres approved for your vehicle are listed in the
vehicle documentation (e.g. EC Certificate of Conformity or COC docu-
ment 1)
). The vehicle documentation varies depending on the country of resi-
dence. A knowledge of tyre designations makes it easier to choose the correct
tyres. The following wording can be read on the sides of the tyre:
205/55 R 16 91 V
This contains the following information:
205Tyre width in mm55Height/width ratio in %RTyre construction: Radial16Rim diameter in inches91Load rating codeWSpeed index
The manufacturing date is also indicated on the tyre sidewall (possibly only
on the inner side of the wheel): DOT ... 2212 ...
means that the tyre was produced in the 22nd week of 2012.
Please note that with some types of tyre, the actual tyre size can differ from
the nominal size marked on the tyre (for instance 205/55 R 16 91 W), and
there may be significant differences in the contours of the tyres, even
though the tyres are marked with the same nominal size designation.
When replacing the tyres, it is therefore important to make sure that the
actual size of the new tyres does not exceed the dimensions of the factory-
approved makes of tyre.
Failure to observe this requirement can affect the clearance needed for the
tyres. This could result in contact between the tyres and suspension com-
ponents or bodywork causing damage. The brake lines could also be dam-
aged and vehicle safety could be severely impaired ⇒ 
.
1)
COC = certificate of conformity

227
Wheels and tyres
If you use tyres that are approved by SEAT you can be sure that the actual
tyre dimensions will be correct for your vehicle. If you decide to fit a differ-
ent type of tyre, you must obtain the appropriate manufacturer's certificate
from the tyre retailer to confirm that the tyres are suitable for your vehicle.
Keep this certificate in a safe place.
Your SEAT Official Service will be able to advise you on which tyres may be
fitted to your vehicle.
It is best to have all servicing of wheels and tyres performed by a special-
ised workshop. They are familiar with the procedure and have the necessary
special tools and spare parts as well as the proper facilities for disposing of
the old tyres.
WARNING
● It is very important to ensure that the tyres you have chosen have ad-
equate clearance. When selecting replacement tyres, do not rely entirely
on the nominal tyre size marked on the tyre; with some makes of tyre the
effective tyre size can differ significantly from the nominal dimensions,
even though the tyres have the same size designation. Inadequate tyre
clearance can result in damage to the tyres or the vehicle, causing a seri-
ous safety risk. It may also invalidate the vehicle's registration for use on
public roads.
● Avoid running the vehicle on tyres that are more than 6 years old. If
you have no alternative, you should drive slowly and with extra care at all
times.
● If wheel trims are fitted after the car is purchased, ensure that there
is an adequate flow of air for cooling the brake system.
For the sake of the environment
Old tyres must be disposed of according to the laws in the country con-
cerned.
Note
● Never mount used tyres if you are not sure of their “previous history”.
● For technical reasons, it is not generally possible to use the wheels from
other vehicles. In some cases, this may also be true for the same model of
wheel. 
Wheel bolts
The wheel bolts are designed to suit the rims on your car.
The wheel bolts are matched to the rims. When installing different wheels
(for instance alloy wheels or wheels with winter tyres) it is important to use
the correct wheel bolts with the right length and correctly shaped bolt
heads. This ensures that wheels are fitted securely and that the brake sys-
tem functions correctly.
The wheel bolts must be clean and turn easily.
A special adapter is required to turn the anti-theft wheel bolts*
⇒ page 237. 
Winter tyres
Winter tyres will improve the vehicles handling on snow and
ice.
– Winter tyres must be fitted on all four wheels.
– Only use winter tyres that are approved for your vehicle.
– Please note that the maximum permissible speed for winter
tyres may be lower than for summer tyres. 
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228Wheels and tyres
–Also note that winter tyres are no longer effective when the
tread is worn down.
– After fitting the wheels you must always check the tyre pres-
sures. The correct tyre pressures are listed on the sticker on the
inside of the fuel tank flap ⇒ page 223.
In winter road conditions winter tyres will considerably improve vehicle han-
dling. The design of summer tyres (width, rubber compound, tread pattern)
gives less grip on ice and snow. This applies particularly to vehicles equip-
ped with wide section tyres or high speed tyres (code letters H, V or Y on
the sidewall).
Only use winter tyres of the correct type approved for your vehicle. The sizes
of the winter tyres approved for your vehicle are listed in the vehicle docu-
mentation (e.g. EC Certificate of Conformity or COC document 1)
). The vehi-
cle documentation varies depending on the country of residence. See also
⇒ page 226.
Winter tyres lose a great deal of their properties when the tread is worn
down to a depth of 4 mm.
The performance of winter tyres is also severely impaired by ageing, even if
the tread is still much deeper than 4 mm.
Winter tyres are subject to the following maximum speed limits according to
speed rating code letter: ⇒ 
Speed rating code
letter ⇒ page 226Maximum speed limit
Q160 km/h (140 mph)S180 km/h (140 mph)T190 km/h (140 mph)
Speed rating code
letter ⇒ page 226Maximum speed limit
H210 km/h (140 mph)V240 km/h (150 mph)
(note restrictions)
Vehicles capable of exceeding these speeds must have an appropriate
sticker attached so that it is visible to the driver. Suitable stickers are availa-
ble from the SEAT Official Service and specialised workshop. Please note
regulations to this effect in your country.
“All-weather” tyres can also be used instead of winter tyres.
Using winter tyres with V-rating
Please note that the generally applicable 240 km/h (150 mph) speed rating
for winter tyres with the letter V is subject to technical restrictions; the max-
imum permissible speed for your vehicle may be significantly lower . The
maximum speed limit for tyres with a V-rating depends directly on the maxi-
mum axle weights for your car and on the listed weight rating of the tyres
being used.
It is best to contact a SEAT Official Service to check the maximum speed
which is permissible for the V-rated tyres fitted on your car on the basis of
this information.
WARNING
Exceeding the maximum speed permitted for the winter tyres fitted on
your car can cause tyre failure, resulting in a loss of control of the vehicle
– risk of accident. 
1)
COC = certificate of conformity

229
Wheels and tyres
For the sake of the environment
Summer tyres should be fitted again as soon as possible; they give better
handling on roads which are free of snow and ice. Summer tyres perform
with less rolling noise, tyre wear and – most important – reduce fuel con-
sumption. 
Snow chains
Snow chains will improve vehicle handling on snow-covered
roads.
– Snow chains can be used on the front wheels only.
– Check that the snow chains are correctly seated after driving for
a few yards. Always take the manufacturer assembly instruc-
tions into account.
– Keep your speed below 50 km/h (30 mph).
– If there is a danger of being trapped despite having mounted
the chains, it is best to disable the driving wheels (ASR) in the
ESC ⇒ page 184, Switching on/off the ESC and ASR.
Snow chains will improve braking ability as well as traction in winter condi-
tions.
For technical reasons snow chains may only be used with the following
wheel rim/tyre combination.
195/65 R15Chains with links of maximum 15 mm205/55 R16Chains with links of maximum 15 mm225/45 R17Chains with links of maximum 9 mm225/40 R18Chains with links of maximum 9 mm
Only use snow chains with fine-pitch links. The links must not protrude
more than 13.5 mm from the tyres (including tensioner).
Remove wheel covers and trim rings before fitting snow chains.
Remove the chains when roads are free of snow. Otherwise they will impair
handling, damage the tyres and wear out very quickly. 
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243
Emergencies
Starting
5. Start the engine of the vehicle with the boosting battery and let it run at idling speed.
6. Start the engine of the vehicle with the flat battery and wait two or three minutes until the engine is “running”.
Removing the jump leads
7. Before you remove the jump leads, switch off the dipped beam headlights (if they are switched on).
8. Turn on the heater blower and heated rear window in the vehi- cle with the flat battery. This helps minimise voltage peaks
which are generated when the leads are disconnected.
9. When the engine is running, disconnect the leads in reverse or- der to the details given above.
Connect the battery clamps so they have good metal-to-metal contact with
the battery terminals.
If the engine fails to start, switch off the starter after about 10 seconds and
try again after about half a minute.
WARNING
● Please note the safety warnings referring to working in the engine
compartment ⇒ page 209.
● The battery providing assistance must have the same voltage as the
flat battery (12V) and approximately the same capacity (see imprint on
battery). Failure to comply could result in an explosion.
WARNING (Continued)
● Never use jump leads when one of the batteries is frozen. Danger of
explosion! Even after the battery has thawed, battery acid could leak and
cause chemical burns. If a battery freezes, it should be replaced.
● Keep sparks, flames and lighted cigarettes away from batteries, dan-
ger of explosion. Failure to comply could result in an explosion.
● Observe the instructions provided by the manufacturer of the jump
leads.
● Do not connect the negative cable from the other vehicle directly to
the negative terminal of the flat battery. The gas emitted from the battery
could be ignited by sparks. Danger of explosion.
● Do not attach the negative cable from the other vehicle to parts of the
fuel system or to the brake line.
● The non-insulated parts of the battery clamps must not be allowed to
touch. The jump lead attached to the positive battery terminal must not
touch metal parts of the vehicle, this can cause a short circuit.
● Position the leads in such a way that they cannot come into contact
with any moving parts in the engine compartment.
● Do not lean on the batteries. This could result in chemical burns.
Note
The vehicles must not touch each other, otherwise electricity could flow as
soon as the positive terminals are connected. 
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247
Emergencies
Tow-starting
As a general rule, tow-starting is not recommended.
– Engage 2nd or 3rd gear before moving off.
– Press the clutch and hold the pedal down.
– Switch the ignition on.
– Once both vehicles are moving, release the clutch.
– As soon as the engine starts: press the clutch and put the gear
lever in neutral.
If the engine will not start, it is best to try starting it using the battery of an-
other vehicle ⇒ page 241 before attempting to tow start. You should only try
to tow-start the engine if jump starting is not successful. Tow-starting is an
attempt to start the engine via the movement of the wheels.
When tow-starting a vehicle with a petrol engine, do not tow it more than a
short distance, otherwise sunburnt fuel can enter the catalytic converter and
cause damage.
WARNING
The risk of accidents is high when tow-starting, as the towed vehicle can
easily be driven into the towing vehicle.
CAUTION
Do not tow vehicles for more than 50 m. Risk of damage to the catalytic con-
verter. Towing vehicles with a manual gearbox
Towing is relatively straightforward.
Please observe the relevant instructions ⇒ page 244.
The vehicle can be towed using a tow bar or tow rope in the normal way,
with all four wheels on the road; it can also be towed with either the front or
rear wheels lifted off the road. The maximum towing speed is 50 km/h (30
mph). 
Towing a vehicle equipped with automatic gearbox
Certain restrictions must be observed when towing your ve-
hicle. Please observe the relevant instructions ⇒ page 244.
The vehicle can be towed with a tow bar or tow rope in the normal way, with
all four wheels on the ground. When doing so, please note the following
points:
● Make sure the selector lever is in the N position.
● The vehicle must not be towed faster than 50 km/h (30 mph).
● The vehicle must not be towed further than 50 km (30 miles). Reason:
when the engine is not running, the gearbox oil pump does not work and
the gearbox is not adequately lubricated for higher speeds or longer distan-
ces.
If the vehicle has to be towed with a breakdown truck, it must only be sus-
pended at the front wheels. Reason: the drive shafts are located on the front
wheels. If the car is towed with the rear wheels lifted off the road (I.e. travel-
ling backwards), the drive shafts also turn backwards. The planetary gears
in the automatic gearbox then turn at such high speeds that the gearbox
will be severely damaged in a short time. 
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263
Technical specifications
Technical specifications Technical specifications
Important
The information in your vehicle's official documents always
take precedence over the information in the current instruc-
tion manual. All technical specifications provided in this documentation are valid for the
standard model in Spain. The vehicle data card included in the Mainte-
nance Programme or the vehicle registration documentation shows which
engine is installed in the vehicle.
The figures may be different depending whether additional equipment is fit-
ted, for different models, for special vehicles and for other countries. Abbreviations used in the Technical Specifications sectionAbbrevia-
tionMeaning
kWKilowatt, engine power measurement.
PSPferdestärke (horsepower), formerly used to denote engine
power.
rpmRevolutions per minute - engine speed.NmNewton metres, unit of engine torque.litres per100 kmFuel consumption in litres per 100 km (70 miles).
g/kmCarbon dioxide emissions in grams per km (mile) travelled.CO 2Carbon dioxideCNCetane number, indication of the diesel combustion power.
RONResearch octane number, indication of the knock resistance
of petrol.
Safety FirstOperating instructionsPractical TipsTechnical specifications