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4-3. Do-it-yourself maintenance
When to replace your vehicle's tires
n
Tires should be replaced if:
You have tire damage such as cuts, splits, cracks deep enough to expose the
l
fabric or bulges indicating internal damage
A tire goes flat repeatedly or cannot be properly repaired due to the size or
l
location of a cut or other damage
If you are not sure, consult with your Lexus dealer.
Replacing tires and wheels
n
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 indi-
cate a system malfunction.
Tire life
n
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
n
The effectiveness of snow tires is lost.
Maximum load of tire
n
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. (
322
→
P. 326, 423).
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