Chevrolet 1993 Corvette Owner's Manual page 284

When to Check:
Check your tires once a month or more.
Don't forget your compact spare tire. It
should be at 60 psi (420 1tPa).
How to Check:
Use the tire pressure gage provided in
your center storage console to check
tire pressure. Simply looking at the tires
will not tell you the pressure, especially
if you have radial tires-which may look
properly inflated even if they're
underinflated.
If your tires have valve caps, be sure to
put them back on. They help prevent
leaks by keeping out dirt and moisture.
Tire Rotation
The tires on your Corvette are
directional, asymmetrical, and are
different sizes front tu rear. Due to this,
your tires should not be rotated. Each
tire and wheel should be used only in
theqosition it is
in.