Toyota prius Owner's Manual page 442

4-3. Do-it-yourself maintenance
CAUTION
 When inspecting or replacing tires
Observe the following precautions to prevent accidents.
Failure to do so may cause damage to parts of the drive train as well as dan-
gerous handling characteristics, which may lead to an accident resulting in
death or serious injury.
 Do not mix tires of different makes, models or tread patterns.
Also, do not mix tires of remarkably different treadwear.
 Do not use tire sizes other than those recommended by Toyota.
 Do not mix differently constructed tires (radial, bias-belted or bias-ply
tires).
 Do not mix summer, all season and snow tires.
 Do not use tires that have been used on another vehicle.
Do not use tires if you do not know how they were used previously.
 Do not tow if your vehicle has a compact spare tire installed. (if equipped)
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