Lexus ES-300 2001 Manual page 451

CHASSIS
63E006
" 1 New tread
2 Tread wear indicator 3 Worn
tread
Replace the tires when the tread wear indicators
show. The location of the tread wear indicators is
∆
shown by the marks such as "TWI" or " " marks
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.
The effectiveness of snow tires is lost if the tread
wears down below 4 mm (0.16 in.).
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