Ford 2004 Crown Victoria v.1 Manuel d'utilisateur télécharger pdf (Page 222)

TIRE CARE

Improper or inadequate vehicle maintenance can also cause tires to wear

abnormally. Here are some of the important maintenance items

Tire inflation pressure

Use a tire gauge to check the tire inflation pressure, including the spare,

at least monthly and before long trips. You are strongly urged to buy a

reliable tire pressure gauge, as automatic service station gauges may be

inaccurate.

Use the recommended cold inflation pressure for optimum tire

performance and wear. Under-inflation or over-inflation may cause

uneven treadwear patterns.

Under-inflation is the most common cause of tire failures and

may result in severe tire cracking, tread separation or ⬙blowout⬙,

with unexpected loss of vehicle control and increased risk of injury.

Under-inflation increases sidewall flexing and rolling resistance,

resulting in heat buildup and internal damage to the tire. It also may

result in unnecessary tire stress, irregular wear, loss of vehicle control

and accidents. A tire can lose up to half of its air pressure and not

appear to be flat!

When weather temperature changes occur, tire inflation pressures also

change. A 10 degree temperature change causes a corresponding drop of

7 kPa (1 psi) in inflation pressure. Check your tire pressures frequently

and adjust them to the proper pressure which can be found on the tire

label or certification label.

If checking tire pressure when the tire is hot, (i.e. driven more than 1.6

km [1mile]), never “bleed” or reduce air pressure. The tires are hot from

driving and it is normal for pressures to increase above recommended

cold pressures. A hot tire at or below recommended cold inflation

pressure could be significantly under-inflated.

To check the pressure in your tire(s):

1. Make sure the tires are cool, meaning they are not hot from driving

even a mile.

Note: If you have to drive a distance to get air for your tire(s), check

and record the tire pressure first and add the appropriate air pressure

when you get to the pump. It is normal for tires to heat up and the air

pressure inside to go up as you drive. Never “bleed” or reduce air

pressure when tires are hot.

2004 Crown Victoria (cro)

Owners Guide (post-2002-fmt)

USA English (fus)

Maintenance and Specifications

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Ford 2004 Crown Victoria v.1 Manuel d'utilisateur Page 222