Lexus RX 450h Owner's Manual page 481

Replace the tires if the treadwear indica-
tors are showing on a tire.
When to replace your vehicle's tires
■
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 bulges indicating internal damage.
A tire goes flat repeatedly or cannot be
●
properly repaired due to the size or loca-
tion of a cut or other damage.
If you are not sure, consult with your Lexus
dealer.
Tire life
■
Any tire over 6 years old must be checked
by a qualified technician even if it has sel-
dom or never been used or damage is not
obvious.
Proper storage of the spare tire
■
(RX450hL)
As an improperly stored spare tire may
cause damage to the wire cable that holds
it, check that the spare tire is stored prop-
erly on a daily basis.
If the stored spare tire appears to be
●
slanted or rattles while driving, the spare
tire may not be properly stored. Store the
spare tire again by performing the follow-
ing tire change procedure correctly:
1 If the spare tire is slanted, the hoist
assembly may be stuck in the wheel
opening. If the spare tire rattles while
driving, it may not be fully raised. Lower
the spare tire to the ground and make
sure that the hoist assembly is perpen-
dicular to the wheel opening.
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6-3. Do-it-yourself maintenance
2 Raise the tire slowly and steadily until a
click is heard and the jack handle skips.
If the spare tire cannot be lowered, the wire
cable may be severed. Have the vehicle
inspected at your Lexus dealer.
If the tread on snow tires wears down
■
below 4 mm (0.16 in.)
The effectiveness of the tires as snow tires is
lost.
WARNING
When inspecting or replacing tires
■
Observe the following precautions to
prevent accidents.
Failure to do so may cause damage to
parts of the drive train as well as danger-
ous handling characteristics, which may
lead to an accident resulting in death or
serious injury.
Do not mix tires of different makes,
●
models or tread patterns.
Also, do not mix tires of remarkably
different treadwear.
Do not use tire sizes other than those
●
recommended by Lexus.
Do not mix differently constructed
●
tires (radial, bias-belted or bias-ply
tires).
Do not mix summer, all season and
●
snow tires.
Do not use tires that have been used
●
on another vehicle.
Do not use tires if you do not know
how they were used previously.
Vehicles with a compact spare tire: Do
●
not tow if your vehicle has a compact
spare tire installed.
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