fuel consumption Seat Altea Freetrack 2008 User Guide
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Page 238 of 317
Wheels and tyres
236Changing wheels around
If the front tyres are worn considerably more than the rear ones it is advisable
to change them around as shown ⇒page 235, fig. 174. All the tyres will then
last for about the same time.
Wheel balance
The wheels on new vehicles are balanced. However, various factors encoun-
tered in normal driving can cause them to become unbalanced, which results
in steering vibration.
Unbalanced wheels should be rebalanced, as they otherwise cause excessive
wear on steering, suspension and tyre s. A wheel must also be rebalanced
when a new tyre is fitted.
Incorrect wheel alignment
Incorrect wheel alignment causes excessiv e tyre wear, impairing the safety of
the vehicle. If tyres show excessive wear, you should have the wheel align-
ment checked by an Authorised Service Centre.
WARNING
There is a serious danger of accidents if a tyre bursts during driving!•
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. Worn
tyres do not grip well at high speeds on wet roads. There is also a greater
risk of “aquaplaning”.
•
At continuously high speeds, a tyre with insufficient pressure flexes
more. This causes it to overheat. This can cause tread separation and tyre
blow-out. Risk of accident. Always observe the recommended tyre pres-
sures.
•
If tyres show excessive wear, you should have the running gear checked
by an Authorised Service Centre.
•
Keep chemicals such as oil, fuel and brake fluid away from tyres.
•
Damaged wheels and tyres must be replaced immediately!
For the sake of the environment
Under-inflated tyres will increase fuel consumption.Puncture proof tyres
Anti-puncture tyres allow you to continue driving even with a
punctured tyre, in the majority of cases.Vehicles that are factory-fitted with puncture proof tyres
22)
indicate
on the instrument panel when there is a loss of tyre pressure.
Driving with anti-puncture tyres (emergency gear)
– Leave the ESP/TCS (electronic stabilisation programme) switched on, or switch on ⇒page 183.
– Continue driving carefully and slowly (80 km/h maximum).
– Avoid sudden manoeuvres and sharp turns.
– Avoid driving over obstacles (for example kerbs) or potholes.
– Look out for the ESP/TCS intervening often, smoke coming from the tyres or the smell of rubber, the vehicle vibrating or a clat-
tering noise. If any of these occur, stop the vehicle.
The anti-puncture tyres have a tag on the side of the tyre, with the description:
“DSST”, “Eufonia”, “RFT”, “ROF”, “RSC”, “SSR” or “ZP”.
The sides of this type of tyre are reinforced. When the tyres lose air they are
supported on the sides (emergency driving).22)Depending upon version and country.
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Page 242 of 317
Wheels and tyres
240
WARNING
The maximum speed for the winter tyres must not be exceeded. Otherwise,
this could lead to tyre damage and thus, an accident risk.
For the sake of the environment
Fit your summer tyres in good time. They are quieter, do not wear so quickly
and reduce fuel consumption.Snow chainsSnow chains may be fitted only to the front wheels, and only to certain tyre
sizes ⇒page 237.
Snow chains must have fi ne-pitch links which do not protrude more than 9
mm, including tension device.
Remove wheel hub covers and trim rings before fitting snow chains. For safety
reasons cover caps, available in any Authorised Service Centre, must then be
fitted over the wheel bolts.
Four-wheel drive : where snow chains are compulsory on certain roads, this
normally also applies to cars with four -wheel drive. Snow chains may only be
fitted to the front wheels (also on vehicles with four-wheel drive).
WARNING
Observe the fitting instructions provided by the snow chain manufacturer.
Caution
You must remove the snow chains to drive on roads which are free of snow.
Otherwise they will impair handling, damage the tyres and wear out very
quickly.
Note
•
In some countries, the speed limit for using snow chains is 50 km/h. The
legal requirements of the country should be followed.
•
We recommend that you ask your Approved Service Centre for information
about appropriate wheel, tyre and snow chain size.
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Page 277 of 317
General notes on the technical data 275
Safety First
Operating instructions
Tips and Maintenance
Te c h n i c a l D a t a
Te c h n i c a l D a t aGeneral notes on the technical dataWhat you should be aware ofGeneral notes
All data in the official vehicle documents take precedence over this data.All data in these documents are valid for the basic model as offered in Spain.
The vehicle data card included in the inspection and maintenance schedule
in the vehicles registration documents show which engine is installed in the
vehicle. The figures may be different if addition
al equipment is fitted, for different
models, for special vehicles and for other countries.
Abbreviations used in this paragraph of the Technical Data Abbreviation MeaningkW Kilowatt, engine power measurement.
bhp Brake horse power, formerly used to denote engine power
at rpm Revolutions per minute - engine speed. Nm Newton metres, unit of engine torque.
l/100 km Fuel consumption in litres per 100 kilometres g/km Carbon dioxide emission s in grams per kilometre.
CO
2
Carbon dioxide
CN Cetane number, indication of the ignition quality of the diesel.
RON Research octane number, indication of the knock resistance of petrol.
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Page 279 of 317
General notes on the technical data 277
Safety First
Operating instructions
Tips and Maintenance
Te c h n i c a l D a t a
How are the figures measured?Fuel consumption
The consumption and emission details shown on the vehi cle data sticker differ from one vehicle to another.The fuel consumption and CO
2 emissions of the vehicle can be found on the
vehicle data sticker.
The fuel consumption and emissions figures given are based on the weight
category of the car, which is determined according to the engine/gearbox
combination and the equipment fitted. The consumption and emission figures are calculated in accordance with the
EC test requirements 1999/100/EC. The
se test requirements specify a real-
istic test method based on normal everyday driving.
The following test conditions are applied:
Note
•
Actual consumption may vary from quoted test values, depending on
personal driving style, road and traffic conditions, the weather and the condi-
tion of the vehicle. Urban cycle
The urban cycle starts with an engine cold start. City driving is then simulated.
Extra urban cycle In the extra urban cycle the vehicle undergoes frequent acceleration
and braking in all gears, as in normal everyday driving. The
road speed ranges from 0 to 120 km/h.
Combined The average overall consumption is calculat
ed with a weighting of around 37% for the urban cycle and 63% for the extra urban
cycle.
CO2 emissions The exhaust gases are collected during both driving cycles to calculate carbon dioxide emissions. The gas composition is then
analysed to evaluate the CO
2 content and other emissions.
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