Lexus ES350 Service Manual page 527

Tire section names
Bead
1
Sidewall
2
Shoulder
3
Tread
4
Belt
5
Inner liner
6
Reinforcing rubber
7
Carcass
8
Rim lines
9
Bead wires
10
Chafer
11
Uniform Tire Quality Grading
This information has been prepared in accordance with regulations issued by the
National Highway Traffic Safety Administration of the U.S. Department of Trans-
portation.
It provides the purchasers and/or prospective purchasers of Lexus vehicles with
information on uniform tire quality grading.
Your Lexus dealer will help answer any questions you may have as you read this infor-
mation.
DOT quality grades
■
All passenger vehicle tires must conform to Federal Safety Requirements in
addition to these grades. Quality grades can be found where applicable on
the tire sidewall between tread shoulder and maximum section width.
For example: Treadwear 200 Traction AA Temperature A
Treadwear
■
The treadwear grade is a comparative rating based on the wear rate of the tire
when tested under controlled conditions on a specified government test
course.
For example, a tire graded 150 would wear one and a half (1 - 1/2) times as well on
the government course as a tire graded 100.
The relative performance of tires depends upon the actual conditions of their use.
Performance may differ significantly from the norm due to variations in driving
habits, service practices and differences in road characteristics and climate.
ES350_OM_OM33B64U_(U)
9-1. Specifications
I n f o r ma t i o n P r o v i d e d b y :
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