BMW 330CI Manual Do Utilizador

129

The factory-approved tires are matched 
to your vehicle and have been selected 
to provide optimum safety and driving 
comfort when used properly.

It is not merely the tire's service life, but 
also driving comfort and – above all else 
– driving safety that depend on the con-
dition of the tires and the maintenance 
of the specified tire inflation pressure.

Incorrect tire inflation pressure is 
a frequent cause of tire damage. 

Tire pressure also has a major effect on 
your BMW's handling response. Be 
sure to check the tire inflation pressure, 
including the space-saver spare tire or 
the spare tire, on a regular basis, at 
least twice a month and before every 
extended journey, refer to page 

this is not done, incorrect tire pressures 
can cause driving instability and tire 
damage, ultimately resulting in acci-
dents.

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Inspect your tires frequently for tread 
wear, signs of damage and for foreign 
objects lodged in the tread. Check the 
tread depth.

Tread depth should not be allowed to 
go below 1/8 in / 3 mm, even though 
the legally specified minimum tread 
depth is 1/16 in / 1.6 mm.

Below 1/8 in / 3 mm tread depth, there 
is a great risk of hydroplaning, even at 
relatively moderate speeds and with 
only small amounts of water on the 
road. Tread wear indicators in the 
tread-groove base – see arrow – are 
distributed around the wheel circumfer-
ence and are labeled on the tire side-

wall with TWI – Tread Wear Indicator. At 
a tread depth of 1/16 in / 1.6 mm, the 
indicators signal that the legally permis-
sible wear limit has been reached.

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