
TIRE CARE
Improper or inadequate vehicle maintenance can also cause tires to wear
abnormally. Here are some of the important maintenance items:
Tire wear
Measure and inspect the tire tread on all your tires periodically.
Advanced and unusual tire wear can reduce the ability of tread to grip
the road in adverse (wet, snowy, etc.) conditions. Visually check your
tires for uneven wear, looking for high and low areas or unusually
smooth areas. Also check for signs of tire damage.
When the tread is worn down to
1/16th of an inch (2 mm), tires must
be replaced to prevent your vehicle
from skidding and hydroplaning.
Built-in treadwear indicators, or
“wear bars”, which look like narrow
strips of smooth rubber across the
tread will appear on the tire when
the tread is worn down to 1/16th of
an inch (2 mm). When the tire tread
wears down to the same height as
these “wear bars”, the tire is worn
out and should be replaced.
Inspect your tires frequently for any
of the following conditions and
replace them if one or more of the
following conditions exist:
•Fabric showing through the tire
rubber
•Bulges in the tread or sidewalls
•Cracks or cuts on the sidewalls
•Cracks in the tread groove
•Impact damage resulting from use
•Separation in the tread
•Separation in the sidewall
•Severe abrasion on the sidewall
If your vehicle has a leak in the exhaust system, a road tire or the spare
tire may be exposed to hot exhaust temperatures requiring the tire to be
replaced.
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Towing trailers beyond the maximum tongue weight exceeds the
limit of the towing system and could result in vehicle structural
damage, loss of vehicle control and personal injury.
Load equalizing hitch
When hooking up a trailer using a load equalizing hitch, always use the
following procedure:
1. Park the unloaded vehicle on a level surface. With the ignition on and
all doors closed, allow the vehicle to stand for several minutes so that it
can level.
2. Measure the height of a reference point on the front and rear bumpers
at the center of the vehicle.
3. Attach the trailer to the vehicle and adjust the hitch equalizers so that
the front bumper height is within
1 2” (13 mm) of the reference point.
After proper adjustment, the rear bumper should be no higher than in
Step 2.
Note:Adjusting an equalizing hitch so the rear bumper of the vehicle is
higher than it was unloaded will defeat the function of the load
equalizing hitch and may cause unpredictable handling.
Safety chains
Always connect the trailer’s safety chains to the frame or hook retainers
of the vehicle hitch. To connect the trailer’s safety chains, cross the
chains under the trailer tongue and allow slack for turning corners.
If you use a rental trailer, follow the instructions that the rental agency
gives to you.
Do not attach safety chains to the bumper.
Trailer brakes
Electric brakes and manual, automatic or surge-type trailer brakes are
safe if installed properly and adjusted to the manufacturer’s
specifications. The trailer brakes must meet local and Federal
regulations.
If you own a trailer with a hydraulic brake system, do not
connect the trailer’s hydraulic brake system directly to your
vehicle’s brake system. The vehicle’s brake system is only designed to
carry the appropriate amount of brake fluid for the vehicle alone.
Connecting a hydraulic trailer braking system could adversely affect
your vehicle’s braking performance.
2005 F250/350/450/550(f23)
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ENGINE DATA
Engine 5.4L V8 engine 6.8L V10 engine
Cubic inches 330 415
Required fuel 87 octane 87 octane
Firing order 1-3-7-2-6-5-4-8 1-6-5-10-2-7-3-8-4-9
Spark plug gap1.02–1.28mm
(0.040–0.050 inch)**1.02–1.28mm
(0.040–0.050 inch)**
Ignition system Coil on plug Coil on plug
Compression ratio 9.8:1 9.2:1
*Refer to the6.0 Liter Power Stroke Direct Injection Turbo Diesel
Owner’s Guide Supplementfor Motorcraft diesel engine service part
numbers.
**The 5.4L 3V and 6.8L 3V spark plug gap CANNOT be adjusted.
VEHICLE DIMENSIONS
F–250 Regular Cab and SuperCab
Dimension Body style
Regular Cab
4x2 – inches
(mm)Regular Cab
4x4 – inches
(mm)SuperCab
4x2 – inches
(mm)SuperCab
4x4 – inches
(mm)
(1) Overall
height76.5 (1943) 79.1 (2009) 76.8 (1951)
b79.4 (2017)b
(2) Track -
Front/Rear68.3
(1734)/67.2
(1706)68.3 (1736) /
67.2 (1706)68.3 (1734) /
67.2 (1706)68.3 (1736) /
67.2 (1706)
(3) Overall
width79.9 (2029) 79.9 (2029) 79.9 (2029) 79.9 (2029)
(4) Wheelbase 137.0 (3480) 137.0 (3480) 141.8 (3602)
a
158.0 (4013)b141.8 (3602)a
158.0 (4013)b
(5) Overall
length226.4 (5751) 226.4 (5751) 231.2
(5872)a
247.4 (6284)b
231.2 (5872)a
247.4 (6284)b
a
Short BoxbLong Box
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F–250 Crew Cab
Dimension Body style
Crew Cab
4x2, Short
box -
inches
(mm)Crew Cab
4x4, Short
box - inches
(mm)Crew Cab
4x2, Long
box - inches
(mm)Crew Cab
4x4, Long
box - inches
(mm)
(1) Overall
height77.5 (1969) 80.0 (2032) 77.3 (1963) 79.9 (2029)
(2) Track -
Front/Rear68.3
(1734)/
67.2 (1706)68.3 (1736)/
67.2 (1706)68.3 (1734)/
67.2 (1706)68.3 (1736)/
67.2 (1706)
(3) Overall
width79.9 (2029) 79.9 (2029) 79.9 (2029) 79.9 (2029)
(4)
Wheelbase156.2
(3967)156.2 (3967) 172.4 (4379) 172.4 (4379)
(5) Overall
length245.6
(6238)245.6 (6238) 261.8 (6650) 261.8 (6650)
2005 F250/350/450/550(f23)
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F–350 (except Crew Cab)
Dimension Body style
Regular Cab
Chassis Cab -
inches (mm)SuperCab
Chassis Cab -
inches (mm)Regular Cab
Style Side -
inches (mm)SuperCab
Style Side -
inches (mm)
(1) Overall
height76.9 (1953)
a
77.1 (1958)b
81.6 (2073)c
80.0 (2032)d
77.4 (1966)a
77.4 (1966)b
81.5 (2070)c
80.2 (2037)d
76.8 (1951)a
76.7 (1948)b
80.8 (2052)c
79.6 (2022)d
77.3 (1963)a,e
77.1 (1958)a,f
77.0 (1956)b
81.4 (2068)c,e
81.2 (2062)c,f
79.6 (2022)d
(2a) Track -
Front68.3 (1734)a/
68.9 (1751)b/
68.3 (1736)c/
69.0 (1753)d
68.3 (1734)a/
68.9 (1751)b/
68.3 (1736)c/
69.0 (1753)d
68.3 (1734)a/
68.9 (1751)b/
68.3 (1736)c/
69.0 (1753)d
68.3 (1734)a/
68.9 (1751)b/
68.3 (1736)c/
69.0 (1753)d
(2b) Track -
Rear68.1 (1730)a,c/
71.0 (1803)b,d68.1 (1730)a,c/
71.0 (1803)b,d67.2 (1706)a,c/
74.6 (1896)b,d67.2 (1706)a, c
/
74.6 (1896)b, d
(3) Overall
width79.9 (2029)a,c/
92.2 (2342)b, d79.9 (2029)a,c/
92.2 (2342)b,d79.9 (2029)a,c/
95.5 (2426)b,d79.9 (2029)a,c/
95.5 (2426)b, d
(4)
Wheelbase140.8 (3576)
164.8 (4186)161.8 (4110) 137.0 (3480) 141.8 (3602)e/
158.0 (4013)f
(5) Overall
length225.6
(5730)a,b,c,d/
249.6
(6340)
b,d
246.6 (6264) 226.4 (5751) 231.2 (5872)e/
247.4 (6284)f
a
4x2 Single rear wheel (SRW)b4x2 Dual rear wheel (DRW)c4x4 Single rear wheel (SRW)d4x4 Dual rear wheel (DRW)eShort boxfLong box
2005 F250/350/450/550(f23)
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291

F–350 Crew Cab
DimensionBody style
Crew Cab
Chassis Cab -
inches (mm)Crew Cab,
Short box -
inches (mm)Crew Cab,
Long box -
inches (mm)
(1) Overall
height77.9 (1979)
a/
77.9 (1979)b/
81.8 (2078)c/
80.8 (2052)d
77.8 (1976)a/
77.6 (1971)b/
81.8 (2078)c/
80.1 (2035)d
77.6 (1971)a/
77.4 (1966)b/
81.7 (2075)c/
80.0 (2032)d
(2a) Track -
Front68.3 (1734)a/
68.9 (1751)b/
68.3 (1736)c/
69.0 (1753)d
68.3 (1734)a/
68.9 (1751)b/
68.3 (1736)c/
69.0 (1753)d
68.3 (1734)a/
68.9 (1751)b/
68.3 (1736)c/
69.0 (1753)d
(2b) Track -
Rear68.1 (1730)a,c/
71.0 (1803)b,d67.2 (1706)a,c/
74.6 (1896)b,d67.2 (1706)a,c/
74.6 (1896)b,d
(3) Overall
width79.9 (2029)a,c/
92.2 (2342)b, d79.9 (2029)a,c/
95.5 (2426)b, d79.9 (2029)a,c
95.5 (2426)b,d
(4) Wheelbase 176.2 (4475) 156.2 (3967) 172.4 (4379)
(5) Overall
length261.60 (6629) 245.6 (6238) 261.8 (6650)
a4x2 Single Rear Wheel (SRW)b4x2 Dual Rear Wheel (DRW)c4x4 Single Rear Wheel (SRW)d4x4 Dual Rear Wheel (DRW)
2005 F250/350/450/550(f23)
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292

F–450
Dimension Body style
Regular
Cab
Chassis 4x2
– inches
(mm)Regular
Cab
Chassis 4x4
– inches
(mm)SuperCab
Chassis
4x2/4x4 –
inches
(mm)Crew Cab
Chassis
4x2/4x4 –
inches
(mm)
(1) Overall
height80.6 (2047)
a
80.5
(2045)b,c
80.2 (2037)d
80.7 (2050)a
80.5 (2045)b
80.0
(2032)c,d
80.5 (2045) 80.8 (2052) -
4x2
80.9 (2055) -
4x4
(2) Track -
Front / Rear74.8 (1900) /
74.0 (1880)74.8 (1900) /
74.0 (1880)74.8 (1900) /
74.0 (1880)74.8 (1900) /
74.0 (1880)
(3) Overall
width93.6 (2377) 93.6 (2377) 93.6 (2377) 93.6 (2377)
(4)
Wheelbase140.8 (3576)
164.8 (4186)
188.8 (4796)
200.8 (5100)140.8 (3576)
164.8 (4186)
188.8 (4796)
200.8 (5100)161.8 (4110) 176.2 (4475)
200.2 (5085)
(5) Overall
length225.6
(5730)
a
249.6
(6340)b
273.6
(6949)c
285.6
(7254)d
225.6
(5730)a
249.6
(6340)b
273.6
(6949)c
285.6
(7254)d
246.6 (6264) 261.0
(6629)e
285.0
(7239)f
a
140.8” (3576 mm) wheel baseb164.8” (4186 mm) wheel basec188.8” (4795 mm) wheel based200.8” (5100 mm) wheel basee176.2” (4475 mm) wheel basef200.2” (5085 mm) wheel base
2005 F250/350/450/550(f23)
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293

F–550
Dimension Body style
Regular
Cab
Chassis
Cab 4x2 –
inches
(mm)Regular
Cab
Chassis
Cab 4x4 –
inches
(mm)Crew Cab
Chassis
Cab 4x2 –
inches
(mm)Crew Cab
Chassis
Cab 4x4 –
inches
(mm)
(1) Overall
height81.7 (2075)
a
81.4
(2068)b,c
81.1 (2060)d
81.7 (2075)a
81.2 (2062)b
81.1 (2060)c
80.7 (2050)d
81.5 (2070) 81.4 (2068)
(2) Track -
Front / Rear74.8 (1900) /
74.0 (1880)74.8 (1900) /
74.0 (1880)74.8 (1900) /
74.0 (1880)74.8 (1900) /
74.0 (1880)
(3) Overall
width93.6 (2377) 93.6 (2377) 93.6 (2377) 93.6 (2377)
(4)
Wheelbase140.8 (3576)
164.8 (4186)
188.8 (4796)
200.8 (5100)140.8 (3576)
164.8 (4186)
188.8 (4796)
200.8 (5100)161.8 (4110) 176.2 (4475)
200.2 (5085)
(5) Overall
length225.6
(5730)
a
249.6
(6340)b
273.6
(6949)c
285.6
(7254)d
225.6
(5730)a
249.6
(6340)b
273.6
(6949)c
285.6
(7254)d
246.6
(6264)e261.0
(6629)e
285.0
(7239)f
a
140.8” (3576 mm) wheel baseb164.8” (4186 mm) wheel basec188.8” (4795 mm) wheel based200.8” (5100 mm) wheel basee176.2” (4475 mm) wheel basef200.2” (5085 mm) wheel base
2005 F250/350/450/550(f23)
Owners Guide (post-2002-fmt)
USA_English(fus)
Maintenance and Specifications
294