1999 Toyota Avalon Owners Manual

generate and reduce tire life, and exces- sive temperature can lead to sudden tire failure. The grade C corresponds to a lev- el of performance which all passenger car tires must meet under the Federal Motor Vehicle Safety Standard No. 109. Grades B and A represent higher levels of perfor- mance on the laboratory test wheel than the minimum required by law.

tires must conform

Uniform tire quality grading This information has been prepared in ac- cordance with regulations issued by the National Highway Traffic Safety Adminis- tration of the U.S. Department of Trans- portation. It provides the purchasers and/ or prospective purchasers of Toyota vehicles with information on uniform tire quality grading. Your Toyota dealer will help answer any questions you may have as you read this information. DOT quality grades—All passenger ve- hicle to Federal Safety Requirements to these grades. These quality grades are molded on the sidewall. Treadwear—The 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 condi- tions of their use, however, and may de- part significantly the norm due to variations in driving habits, service prac- tices and differences in road characteris- tics and climate.

treadwear grade

in addition

from

238