Chevrolet 2006 TrailBlazer EXT Owner's Manual page 431

CAUTION:
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Mixing tires could cause you to lose control
while driving. If you mix tires of different sizes,
brands, or types (radial and bias-belted tires)
the vehicle may not handle properly, and you
could have a crash. Using tires of different
sizes, brands, or types may also cause
damage to your vehicle. Be sure to use the
correct size, brand, and type of tires on your
vehicle's wheels.
CAUTION:
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If you use bias-ply tires on your vehicle, the
wheel rim flanges could develop cracks after
many miles of driving. A tire and/or wheel
could fail suddenly, causing a crash. Use only
radial-ply tires with the wheels on your vehicle.
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 tires) as your
vehicle's original tires.
Vehicles equipped with a tire pressure monitoring
system may give an inaccurate low-pressure warning
if non-TPC spec rated tires are installed on your vehicle.
Non-TPC Spec rated tires may give a low-pressure
warning that is higher or lower than the proper warning
level you would get with TPC Spec rated tires. See
Tire Pressure Monitor System on page 5-67.
Your vehicle's original equipment tires are listed on
the Tire and Loading Information Label. This label
is attached to the vehicle's center pillar (B-pillar).
See Loading Your Vehicle on page 4-48, for more
information about the Tire and Loading Information
Label.
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