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Owner's Manual Cadillac BLS - IFS Europe BV

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460_OM_MY09.book Page 212 Wednesday, April 2, 2008 10:32 AM<br />

212 Car care<br />

Tyre date code<br />

Tyres should be considered as perishable<br />

goods. As they age, they become progressively<br />

harder, resulting in deteriorating road<br />

grip. This is particularly marked for winter<br />

tyres.<br />

Tyres have a code that specifies their date<br />

of manufacture. The first two digits denote<br />

the week number and the last two digits the<br />

year followed by a filled triangle.<br />

Tyres’ direction of rotation<br />

Direction of rotation is important for most<br />

types of tyre. These tyres have a marking on<br />

the sidewall. The marking can be made up<br />

of the text "Tyre rotation" together with an<br />

arrow or the text "Facing out".<br />

The tyre must have the same direction of<br />

rotation for its entire service life.<br />

Wear indicator<br />

The tyres incorporate so-called wear indicators.<br />

When treadless bands appear across<br />

the width of the tyre surface, only 1.6 mm of<br />

tread pattern remains. This indicates that<br />

the tyre should be changed.<br />

Make sure you are familiar with the legal<br />

limit for minimum tread depth in your<br />

country and also any regulations governing<br />

the use of winter tyres.

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