2007 SATURN ION Owners Manual

Page 337 of 440

SATURN ION 2007  Owners Manual In�ation - Tire Pressure
Tires need the correct amount of air pressure to
operate effectively.
Notice:Do not let anyone tell you that
under-in�ation or over-in�ation is all right. It is
not. If your t

Page 338 of 440

SATURN ION 2007  Owners Manual How to Check
Use a good quality pocket-type gage to check tire
pressure. You cannot tell if your tires are
properly in�ated simply by looking at them. Radial
tires may look properly in�ated even when

Page 339 of 440

SATURN ION 2007  Owners Manual The low-pro�le performance tires, size
215/45ZR17, require tire in�ation pressure
adjustment when driving your vehicle at speeds of
100 mph (160 km/h) or higher. Set the cold tire
in�ation pressure to

Page 340 of 440

SATURN ION 2007  Owners Manual If your vehicle has 215/45ZR17 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. Be

Page 341 of 440

SATURN ION 2007  Owners Manual When It Is Time for New Tires
One way to tell when it
is time for new tires is
to check the treadwear
indicators, which will
appear when your tires
have only 1/16 inch
(1.6 mm) or less of tread
remain

Page 342 of 440

SATURN ION 2007  Owners Manual GM’s exclusive TPC Spec system considers over
a dozen critical speci�cations that impact the
overall performance of your vehicle, including
brake system performance, ride and handling,
traction cont

Page 343 of 440

SATURN ION 2007  Owners Manual If you must replace your vehicle’s tires with those
that do not have a TPC Spec number, make
sure they are the same size, load range, speed
rating, and construction type (radial and
bias-belted tire

Page 344 of 440

SATURN ION 2007  Owners Manual Uniform Tire Quality Grading
Quality grades can be found where applicable on
the tire sidewall between tread shoulder and
maximum section width. For example:
Treadwear 200 Traction AA Temperature A
Th