Lexus RX400h2006, Owner'S Manual

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CHASSIS
572
CHECKING AND REPLACING TIRES
When to replace your tires
1 New tread 2 Tread wear indicator
3 Worn tread
Replace the tires when the tread wear indicators
show. The location of tread wear indicators is
shown by the marks such as “TWI” or “
Δ
” marks,
etc., molded on the sidewall of each tire.
The tires on your Lexus have built
−
in tread wear
indicators to help you know when the tires need
replacement. When the tread depth wears to 1.6 mm
(0.06 in.) or less, the indicators will appear. If you
can see the indicators in two or more adjacent
grooves, the tire should be replaced.
Depending on driving conditions, your tires may wear
more rapidly than those of conventional vehicles.
The effectiveness of snow tires is lost if the tread
wears down below 4 mm (0.16 in.).
If you have tire damage such as cuts, splits,
cracks deep enough to expose the fabric, or
bulges indicating internal damage, the tire should
be replaced.
If a tire often goes flat or cannot be properly repaired
due to the size or location of a cut or other damage,
it should be replaced. If you are not sure, consult
with your Lexus dealer.
If air loss occurs while driving, do not continue driving.
Driving even a short distance can damage a tire
beyond repair.
Any tires which are over 6 years old must be
checked by a qualified technician even if damage
is not obvious.
Tires deteriorate with age even if they have never or
seldom been used.
This applies also to the spare tire and tires stored
for future use.