Lexus IS300H 2017 Manual page 528

528
7-3. Do-it-yourself maintenance
When to replace your vehicle's tires
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Tires should be replaced if:
The treadwear indicators are showing on a tire.
●
You have tire damage such as cuts, splits, cracks deep enough to expose the fabric, and
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bulges indicating internal damage
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 any authorized Lexus retailer or Lexus authorized repairer, or
any reliable repairer.
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 10 minutes, the
tire pressure warning light blinks for 1 minute and stays on to indicate a system malfunc-
tion.
Tire life
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Any tire over 6 years old must be checked by a qualified technician even if it has seldom
or never been used or damage is not obvious.
Routine tire inflation pressure checks
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The tire pressure warning system does not replace routine tire inflation pressure checks.
Make sure to check tire inflation pressure as part of your routine of daily vehicle checks.
Low profile tires (except 16-inch tires)
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Generally, low profile tires will wear more rapidly and tire grip performance will be
reduced on snowy and/or icy roads when compared to standard tires. Be sure to use
snow tires or tire chains
priate for road and weather conditions.
*
: Tire chains cannot be mounted on the 18-inch tires. Snow tires should be used instead.
If the tread on snow tires wears down below 4 mm (0.16 in.)
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The effectiveness of the tires as snow tires is lost.
*
on snowy and/or icy roads and drive carefully at a speed appro-