1994 Cadillac Eldorado Owner's Manual - Page 307

by treadwear,-tractionand teqqerature gwfQrmance.(Thisappliesonly to vehicles sold in the United (States.) , Treadweat The treadwear grade .acomparative rating based on the wear rate is of the tire when tested .under controlled -conditions on a specified .government test course. .For example, a tire graded 150 would wear one (I on and a half 1/2) times as well the government course-as a tire graded 100. Therelativeperformance of tiresdepends uponthe .actual conditions of.their use, however, and may depart significant@the frorri norm dueto variationsin driving habits, service practices and differences in rodd characteristics and climate. r Daction -A, B, C The traction grades, from highest to lowest are: A, B, and C. They represent the tire's ability stop on wet-pavement as measured under to controlled conditionson specified government test surfaces of asphalt and concrete.A tire markedC may have poor traction p.erformance. Warning: The traction. grade assignedthis tire is based on braking to (straight-ahead) traction tests and doemot include cornering (turning) traction. Temperature -A, B, C The temperature grades. A (the.highest), B, and C, representing the are tire's resistance the generation heat and its ability dissipate heat to of to when tested under controlled conditions.on a specified indoor laboratory test .wheel. Sustained tevperature can cause the material the tire high of I to degenerate and reduce tire.life, and excessive temperature can lead to sudden tire failure. The.gradq corresponds to a level of performance C which a l passenger car tires mustmeet underthe,FederalMotor Vehicle l Safety Standard 109. Grades €3 and A represent higher levels No. of performance on thelaboratory test wheel than the.minimum required bylaw. Warning: The temperature grade for this is established for tire that tire a is. properly inflate.d and not overloaded. Excessive speed, underinflation, 295