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Country Minimum tread depth [mm]
Ukraine
1.6
1)
USA 1.6
1) Larger values for winter tyres where these are mandatory
Performing wheel alignment is a repair measure and should be
charged separately.
Step 1 - checking condition:
– Check for and remove any foreign bodies in tyre tread.
– Check all tyres for following types of damages:
♦ Cuts, cracks, tears
♦ Scuffing or flattened areas on tyre tread
♦ Porous sidewalls
♦ Blisters on sidewalls
– If damage is found: Renew tyres.
Step 2 - checking tyre wear pattern:
– Check tyre wear pattern of front wheels; check for the follow‐
ing:
♦ Feathering on tread indicating possible incorrect toe setting
♦ One-sided tread wear indicating possible incorrect camber
– If the above types of wear are found: Check wheel alignment
to determine the cause.
Step 3 - checking tread depth:
– Measure tread depth on all tyres (including spare tyre) at sev‐
eral points using test pin - T40139- . Uneven tread depth
indicates damage.
– Record average measurement for each tyre in Maintenance
table.
– If minimum tread depth has been reached (as specified for
your country; see table of test values and procedure guidelines
⇒ page 33 ): Renew tyre.
Note
Vehicles with four-wheel drive must be fitted with tyres with the
same tread pattern. Otherwise the centre differential may be
damaged.
3.16 Tyres: checking tyre pressures and ad‐
justing if necessary
Note
The tyre valves have to be sealed with valve caps. Otherwise, dirt
could enter the valve, which will then become blocked and will no
longer seal properly.
Audi A8 2003 ➤
Maintenance - Edition 06.2014
34 3. Maintenance
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