Toyota PRIUS 2008, Quick Reference Manual

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4-3. Do-it-yourself maintenance
PRIUS_U_(L/O_0802)
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When to replace your vehicle’s tires
Tires should be replaced if:
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You have tire damage such as cuts, splits, cracks deep enough to
expose the fabric or bulges indicating internal damage
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A tire goes flat repeatedly or cannot be properly repaired due to the
size or location of a cut or other damage
If you are not sure, consult with your Toyota dealer.
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Replacing tires and wheels
If the ID code of the tire pressure warning valve and transmitter is not
registered, the tire pressure warning system will not work properly. After
about 20 minutes, the tire pressure warning light blinks (comes on after
blinking for 1 minute) to indicate a system malfunction.
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Tire life
Any tire over 6 years old must be checked by a qualified technician even
if they have seldom or never been used or damage is not obvious.
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If the tread wears down below 0.16 in. (4 mm) on snow tires
The effectiveness of snow tires is lost.
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Maximum load of tire
Check that the maximum load of the replaced tire is greater than 1/2 of
the Gross Axle Weight Ratings (GAWR) of either the front axle or the
rear axle, whichever is greater.
As for the maximum load of the tire, see the load limit at maximum cold
tire inflation pressure mentioned on the sidewall of the tire, and as for the
Gross Axle Weight Ratings (GAWR), see the Certification Label.
(
→
P. 388, 474).