wheel alignment PORSCHE CAYNNE S 2005 1.G Owners Manual

282
Practical Tips, Minor Repairs
Tire traction
Warning!
When driving on wet or slushy roads, a
wedge of water may build up between the
tires and the road. This phenomenon is
known as “hydroplane“ and may cause par-
tial or complete loss of traction, vehicle con-
trol or stopping ability.
fReduce speed on wet surfaces to prevent this.Tire lifeTire life depends on various factors, i.e., road sur-
faces, traffic and weather conditions, driving hab-
its, type of tires and tire care.
fInspect your tires for wear and damage before
driving off. If you notice uneven or substantial
wear, wheels might need alignment or tires
should be balanced or replaced.
Tire wearThe original equipment tires on your Porsche have
built-in tire wear indicators. They are molded into
the bottom of the tread grooves and will appear as
approximately 1/2 in. (12 mm) bands when the
tire tread depth is down to 1/16 of an in (1.6 mm).
When the indicators appear in two or more adja-
cent grooves, it is time to replace the tires. We
recommend, however, that you do not let the tires
wear down to this extent.
Worn tires cannot grip the road surface properly
and are even less effective on wet roads.
In the United States, state laws may govern the
minimum tread depth permissible. Follow all such
laws.
Danger!
Driving on worn tires can result in loss of con-
trol of the vehicle and could cause serious
personal injuries or death.
fDo not drive with worn tires or tires showing
cuts or bruises as they may lead to sudden
deflation and loss of control which could cause
severe personal injury.
fSpecialized high performance tires on high
performance sport utility vehicles exhibit more
wear than those on a family sedan, or even a
high performance sedan.
Therefore, it is important to check your tire
pressure and condition at least every two weeks.
fIf you notice that tires are wearing unevenly,
consult your Porsche dealer.
Uneven wear may not always be due to improper
wheel alignment. It can be the result of individual
driving habits such as cornering at high speeds. If
the tire pressure is not checked and adjusted reg-
ularly, abnormal tire wear can also occur.

Practical Tips, Minor Repairs
285
Wheel alignment, wheel balancingAs a precaution, have wheels with summer tires
balanced in the spring, and those with mud and
snow tires before winter. Unbalanced wheels may
affect car handling and tire life.
Only the specified weights may be used for wheel
balancing.
Self-adhesive weights must not come into contact
with cleaning agents, since they could drop off.
Uneven tread wear indicates wheel imbalance. In
this event, the vehicle should be checked at an
authorized Porsche dealer.
Danger!
If, during a journey, uneven running or vibra-
tions occur that could be caused by damage
to tires or the car, the speed must be
reduced immediately, but without braking
sharply. If you continue your trip without hav-
ing the cause of the fault remedied, you
might lose control of your vehicle which
could cause severe personal injury.
fStop the vehicle and check the tires.
fIf no cause for the fault can be found, drive
carefully to the nearest authorized Porsche dealer.

Index
377
Vehicle key
Battery ............................................... 334
Ventilation ................................ 128
,132
,136
Vents ......................................................... 127
Central ...................................... 134,140
Footwell .................................... 134,140
Side .......................................... 134,140
Vertical coupling load .................................. 195
Voltmeter ..................................................... 78
Battery/generator warning ..................... 78
WWarning triangle.......................................... 179
Warnings ...................................................... 85
Washer fluid
Level.................................................. 252
Topping up ......................................... 252
Washer system, windshield wipers................ 122
Washing ..................................................... 266
Water crossing ........................................... 232
Weights...................................................... 363
Wheel alignment ......................................... 285
Wheel bolts ................................................ 293
Removing .................................. 301
,307
Wheel change ............................................. 287
Wheels .............................................. 271,277
Adjusting ............................................ 285
Change ..................................... 294,301
Storing ............................................... 286
Tracks ............................................... 358
Wheel balancing ......................... 226,285
Windows .................................................... 269
Windshield ................................ 134
,140
,252
Windshield wiper/washer stalk ..................... 121Windshield wipers .....................123
,184
,255
Blades................................................269
Front ..................................................122
Rear ...................................................123
Switch ................................................121
Winter
Driving ...............................................321
Tires ..................................................358
Wiper blades .....................................255,269
Changing ...................................255,257
Working on your vehicle ...............................242