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Page 26 of 450

PONTIAC GRAND PRIX 2008  Owners Manual Q:What is wrong with this?
A:The belt is twisted across the body.
{CAUTION:
You can be seriously injured by a twisted belt.
In a crash, you would not have the full width of
the belt to spread impact f

Page 322 of 450

PONTIAC GRAND PRIX 2008  Owners Manual Headlamp aiming is done with the low-beam headlamps.
The high-beam headlamps will be correctly aimed if the
low-beam headlamps are aimed properly.
To adjust the vertical aim, do the following:
1. Open

Page 333 of 450

PONTIAC GRAND PRIX 2008  Owners Manual Low-Pro�le Performance Tire (GXP)
If your vehicle has P255/45R18 size tires on the
front wheels and P225/50R18 size tires on the
rear wheels, they are classi�ed as low-pro�le
performance tires. These

Page 335 of 450

PONTIAC GRAND PRIX 2008  Owners Manual (B) Tire Ply Material:The type of cord and
number of plies in the sidewall and under
the tread.
(C) Tire Identi�cation Number (TIN)
:The letters
and numbers following the DOT (Department of
Transporta

Page 336 of 450

PONTIAC GRAND PRIX 2008  Owners Manual (B) Tire Width:The three-digit number indicates
the tire section width in millimeters from sidewall
to sidewall.
(C) Aspect Ratio
:A two-digit number that
indicates the tire height-to-width measuremen

Page 350 of 450

PONTIAC GRAND PRIX 2008  Owners Manual Different Size Tires and Wheels
If you add wheels or tires that are a different size than
your original equipment wheels and tires, this may affect
the way your vehicle performs, including its braking

Page 352 of 450

PONTIAC GRAND PRIX 2008  Owners Manual Wheel Alignment and Tire Balance
The tires and wheels on your vehicle were aligned
and balanced carefully at the factory to give you the
longest tire life and best overall performance.
Adjustments to