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4-3. Do-it-yourself maintenance
When to replace your vehicle's tires
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Tires should be replaced if:
You have tire damage such as cuts, splits, cracks deep enough to
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expose the fabric, or bulges indicating internal damage.
A tire goes flat repeatedly or cannot be properly repaired due to the
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size or location of a cut or other damage.
If you are not sure, consult with your Toyota dealer.
Replacing tires and wheels
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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
driving for about 20 minutes, the tire pressure warning light comes on
after blinking for 1 minute to indicate a system malfunction.
Tire life
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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.
If the tread wears down below 0.16 in. (4 mm) on snow tires
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The effectiveness of snow tires is lost.
Maximum load of tire
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Check that the number given by dividing the maximum load by 1.10 of
the replacement 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.
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For the GAWR, see the Certification
Label. For the maximum load of the
tire, see the load limit at maximum cold
tire inflation pressure mentioned on the
sidewall of the tire. (→P. 477)
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