Uniform tire quality grading -23 – NISSAN 2008 Altima Hybrid - Owner's Manual User Manual

Page 334

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CAUTION

Failure to follow these guidelines can

result in severe transmission damage.

DO not tow your vehicle with four

wheels on the ground. This may cause

serious damage to your vehicle.

DO NOT tow this vehicle with all four

wheels on the ground (flat towing). Do-

ing so WILL DAMAGE internal transmis-

sion parts due to lack of transmission

lubrication.

For emergency towing procedures refer

to “Towing recommended by NISSAN”

in the “In case of emergency” section of

this manual.

Electronically controlled Continuously

Variable Transmission (eCVT)

To tow a vehicle equipped with an eCVT, an

appropriate vehicle dolly MUST be placed under

the towed vehicle’s drive wheels. Always follow

the dolly manufacturer’s recommendations when

using their product.

DOT (Department of Transportation) Quality

Grades: All passenger car 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 gov-

ernment test course. For example, a tire graded

150 would wear one and one-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, however,

and may depart significantly from the norm due to

variations in driving habits, service practices and

differences in road characteristics and climate.
Traction AA, A, B and C
The traction grades, from highest to lowest, are

AA, A, B, and C. Those grades represent the

tire’s ability to stop on wet pavement as mea-

sured under controlled conditions on specified

government test surfaces of asphalt and con-

crete. A tire marked C may have poor traction

performance.

WARNING

The traction grade assigned to this tire is

based on straight-ahead braking traction

tests, and does not include acceleration,

cornering, hydroplaning, or peak traction

characteristics.

Temperature A, B and C
The temperature grades are A (the highest), B,

and C, representing the tire’s resistance to the

generation of heat, and its ability to dissipate heat

when tested under controlled conditions on a

specified indoor laboratory test wheel. Sustained

high temperature can cause the material of the

tire to degenerate and reduce tire life, and exces-

sive temperature can lead to sudden tire failure.

The grade C corresponds to a level of perfor-

mance which all passenger car tires must meet

under the Federal Motor Safety Standard No.

109. Grades B and A represent higher levels of

performance on the laboratory test wheel than

the minimum required by law.

UNIFORM TIRE QUALITY GRADING

Technical and consumer information

9-23

REVIEW COPY—

2008 Altima Hybrid Electric

(ahv)
Owners Manual—USA_English (nna)
05/31/07—debbie

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