government test course. For example, a tire graded 150 would wear one
and one-half (11 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 C
The traction grades, from highest to lowest are AA, A, B, and C. The
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
performance.
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 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 excessive temperature can lead to
sudden tire failure. The grade C corresponds to a level 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
performance on the laboratory test wheel than the minimum required by
law.
The temperature grade for this tire is established for a tire that
is properly inflated and not overloaded. Excessive speed,
underinflation, or excessive loading, either separately or in
combination, can cause heat buildup and possible tire failure.
TIRES
Tires are designed to give many thousands of miles of service, but they
must be maintained in order to get the maximum benefit from them.
Glossary of tire terminology
•Tire Label:A label showing the OE (Original Equipment) tire sizes,
recommended inflation pressure and the maximum weight the vehicle
can carry.
2007 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Tires, Wheels and Loading
136
Fuse/Relay
LocationFuse Amp
RatingPassenger Compartment Fuse
Panel Description
15 — Not used
16 — Not used
17 15A* Exterior lamps
18 20A* Flasher, Brake On-Off (BOO)
lamps
19 10A* Body Security Module (BSM)
(Security)
20 15A* Trailer tow Electric Brake
Controller (EBC)
21 20A* Heated seats
22 20A* Engine control
23 20A* Engine control (gasoline engine
only)/Climate control (Diesel
engine only)
24 15A* Tow haul, Blower relay, Electronic
Automatic Temperature Control
(EATC)
25 — Not used
26 10A* Airbags
27 15A* Ignition switch RUN feed
28 10A* Trailer tow EBC logic
29 10A* Customer access
30 15A* High beam headlamps
31 15A* Starter relay
32 5A* Radio (start)
33 15A* Cluster, 4x4, Wipers
34 10A* BOO switch (Low current)
35 10A* Instrument cluster
36 — Not used
37 15A* Horn
38 20A* Trailer tow park lamps
39 15A* Heated mirrors
2007 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Roadside Emergencies
215
Climate control (see Air
conditioning or Heating) ............41
Clutch
fluid ..........................................285
operation while driving ..........185
recommended shift speeds ....186
Compass, electronic
set zone adjustment .................77
Console ........................................72
overhead ..............................60–61
Controls
power seat .................................97
steering column ........................69
Coolant
checking and adding ..............267
refill capacities ................271, 294
Cruise control
(see Speed control) ....................66
Customer Assistance ................208
Ford accessories for your
vehicle .....................................254
Ford Extended Service
Plan ..........................................244
Getting assistance outside
the U.S. and Canada ..............245
Getting roadside assistance ...208
Getting the service you
need .........................................240
Ordering additional owner’s
literature .................................246
Utilizing the
Mediation/Arbitration
Program ...................................244
D
Daytime running lamps
(see Lamps) ................................45Dipstick
automatic transmission
fluid ..........................................286
engine oil .................................261
Driveline universal joint and
slip yoke ....................................290
Driving under special
conditions ..................185, 198, 201
sand .........................................200
snow and ice ...........................202
through water .................200, 204
E
Electronic message center ...72, 74
Emergencies, roadside
jump-starting ..........................233
Emergency Flashers .................210
Emission control system ..........281
Engine ........................................298
cleaning ...................................249
coolant .....................................267
diesel ...........................................8
fail-safe cooling .......................272
idle speed control ...................265
refill capacities ........................294
service points ..................258–259
starting after a collision .........210
Engine block heater .................177
Engine oil ..................................261
checking and adding ..............261
dipstick ....................................261
filter, specifications ........264, 293
recommendations ...................264
refill capacities ........................294
Exhaust fumes ..........................176
F
Fail safe cooling ........................272
2007 F-250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA(fus)
Index
305
