Pontiac Solstice 2008 Owner's Manual page 262

Directional Tires
If your vehicle has Goodyear Eagle F1-GS1
P245/45R18 size tires, they are directional
tires and must roll in a certain direction for
the best overall performance. The direction
is shown by an arrow on the tire sidewall.
Because these tires are directional, they
should be rotated as shown here. These
tires should only be moved from front to
rear and rear to front on the same side of
the vehicle.
5-66
After the tires have been rotated, adjust the front
and rear inflation pressures as shown on the Tire
and Loading Information label. See Inflation - Tire
Pressure on page 5-58 and Loading Your Vehicle
on page 4-24.
Reset the Tire Pressure monitor System. See Tire
Pressure Monitor Operation on page 5-61.
Make certain that all wheel nuts are properly
tightened. See "Wheel Nut Torque" under
Capacities and Specifications on page 5-101.
CAUTION:
{
Rust or dirt on a wheel, or on the parts to
which it is fastened, can make wheel nuts
become loose after a time. The wheel
could come off and cause a crash. When
you change a wheel, remove any rust or
dirt from places where the wheel attaches
to the vehicle. In an emergency, you can
use a cloth or a paper towel to do this;
but be sure to use a scraper or wire brush
later, if you need to, to get all the rust or
dirt off.