Chevrolet 2001 Corvette Owner's Manual page 311

CAUTION:
Extended mobility tires are constructed
differently than other tires and could explode
during improper service. You or others could be
injured or killed if you attempt to repair, replace,
dismount, or mount an extended mobility tire.
Let only an authorized Goodyear EMT Service
Center repair, replace, dismount and mount
extended mobility tires.
The valve stems on your extended mobility tires have
sensors that are part of the Tire Pressure Monitor
(TPM). See "Tire Pressure Monitor" in the Index. These
sensors contain batteries which are designed to last for
10 years under normal driving conditions. See your
dealer if you ever need to have a wheel replaced, or if
the sensors ever need replacement.
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NOTICE:
Using liquid sealants can damage the tire valves
and tire pressure monitor sensors in your
extended mobility tires. This damage would not
be covered by warranty. Don't use liquid sealants
in your extended mobility tires.
If you feel that winter tires are needed for your driving
conditions, Goodyear Eagle M+S EMT tires are
available in your original equipment sizes from an
authorized Goodyear EMT retailer. These tires will
improve snow traction while maintaining your
Corvette's extended mobility feature. When using winter
tires on your vehicle, be sure to use them on all
four wheels. See "Buying New Tires" in the Index.