climate control Ram 2500 (Diesel) 2007 User Guide

DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES
The following describes the tire grading categories estab-
lished by the National highway Traffic Safety Adminis-
tration. The specific grade rating assigned by the tire’s
manufacturer in each category is shown on the sidewall
of the tires on your car.
All Passenger Car Tires Must Conform to Federal Safety
Requirements in Addition to These Grades.
Treadwear
The treadwear grade is a comparative rating based on the
wear rate of the tire when tested under controlled con-
ditions on a specified government test course. For ex-
ample, 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, however, andmay depart significantly from the norm due to variations
in driving habits, service practices and differences in road
characteristics and climate.
Traction Grades
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 measured under controlled conditions
on specified government test surfaces of asphalt and
concrete. A tire marked C may have poor traction perfor-
mance.
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.
530 IF YOU NEED CONSUMER ASSISTANCE

Car Washes............................ 463
Carbon Monoxide Warning............... 76,190
CargoLight ............................ 132
Cassette Tape and Player Maintenance......... 255
Catalyst Full Message..................... 434
CD (Compact Disc) Player............209,217,231
Cellular Phone.......................... 89
Center High Mounted Stop Light............ 481
Center Lap Belts......................... 43
Center Seat Storage Compartment.........176,177
Certification Label....................... 355
Charge Air Cooler....................... 450
Chart, Tire Sizing........................ 327
Check Engine Light
(Malfunction Indicator Light)............... 202
Child Restraint........................ 60,61
Child Restraint Tether Anchors............. 65,69
Child Seat............................ 61,68
Cigar Lighter........................... 171Cleaning
Wheels............................. 465
Climate Control......................... 257
Clock .....................207,211,219,232,245
Clutch Linkage Maintenance................ 453
Compact Disc (CD) Maintenance............. 256
Compact Spare Tire...................... 338
Compass...........................146,147
Compass Calibration..................147,158
Compass Variance....................148,158
Computer, Trip/Travel.................... 143
Console, Overhead....................142,150
Contract, Service........................ 526
Coolant Pressure Cap (Radiator Cap).......... 447
Cooling System......................... 444
Adding Coolant (Antifreeze).............. 447
Coolant Capacity...................... 487
Coolant Level...................444,445,448
Disposal of Used Coolant................ 448
536 INDEX