Pontiac 2003 Vibe - Manual (Page 296)

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High Performance Tire (Option)
If this vehicle has the optional 17 - inch P215/50ZR17
size tires, they are “high performance” tires. High
performance tires are designed for very responsive
driving on wet or dry pavement, but they may not offer
the traction you would like on snow or ice covered
roads. You may also notice more road noise with high
performance tires and that they tend to wear faster. Also,
see “Tire Inspection and Rotation” later in this section or
in the Index.
For cold weather driving conditions, you may prefer to
get tires designed for snow or ice. See your Pontiac
dealer for details regarding winter tire availability and
proper tire selection. Also, see “Buying New Tires” later
in this section or in the Index.
Inflation -- Tire Pressure
The Tire - Loading Information label, which is in your
glove compartment, shows the correct inflation
pressures for your tires when they’re cold. “Cold”
means your vehicle has been sitting for at least
three hours or driven no more than 1 mile (1.6 km).
NOTICE:
Don’t let anyone tell you that underinflation or
overinflation is all right. It’s not. If your tires
don’t have enough air (underinflation), you can
get the following:
D Too much flexing
D Too much heat
D Tire overloading
D Bad wear
D Bad handling
D Bad fuel economy
If your tires have too much air (overinflation),
you can get the following:
D Unusual wear
D Bad handling
D Rough ride
D Needless damage from road hazards