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SNOW TIRES AND CHAINS
Snow tires must be the same size and grade as the tires you
currently have on your vehicle.
The tires on your vehicle have all weather treads to provide traction in
rain and snow. However, in some climates, you may need to use snow
tires and chains. If you need to use chains, it is recommended that steel
wheels (of the same size and specifications) be used, as chains may chip
aluminum wheels.
Follow these guidelines when using snow tires and chains:
•Use only SAE Class S chains.
•Install chains securely, verifying that the chains do not touch any
wiring, brake lines or fuel lines.
•Drive cautiously. If you hear the chains rub or bang against your
vehicle, stop and re-tighten the chains. If this does not work, remove
the chains to prevent damage to your vehicle.
•If possible, avoid fully loading your vehicle.
•Remove the tire chains when they are no longer needed. Do not use
tire chains on dry roads.
•The suspension insulation and bumpers will help prevent vehicle
damage. Do not remove these components from your vehicle when
using snow tires and chains.
VEHICLE LOADING – WITH AND WITHOUT A TRAILER
This section will guide you in the proper loading of your vehicle and/or
trailer, to keep your loaded vehicle weight within its design rating
capability, with or without a trailer. Properly loading your vehicle will
provide maximum return of vehicle design performance. Before loading
your vehicle, familiarize yourself with the following terms for determining
your vehicle’s weight ratings, with or without a trailer, from the vehicle’s
Safety Certification Label and Tire Label:
Base Curb Weight– is the weight of the vehicle including a full tank of
fuel and all standard equipment. It does not include passengers, cargo, or
optional equipment.
Vehicle Curb Weight– is the weight of your new vehicle when you
picked it up from your dealer plus any aftermarket equipment.
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Cargo Weight– includes all weight added to the Base Curb Weight,
including cargo and optional equipment. When towing, trailer tongue load
or king pin weight is also part of cargo weight.
GAW (Gross Axle Weight)– is the total weight placed on each axle
(front and rear) – including vehicle curb weight and all payload.
GAWR (Gross Axle Weight Rating)– is the maximum allowable
weight that can be carried by a single axle (front or rear).These
numbers are shown on the Safety Compliance Certification Label
located on the driver’s door or B-Pillar. The total load on each
axle must never exceed its GAWR.
Exceeding the Safety Certification Label axle weight rating limits
could result in substandard vehicle handling or performance,
engine, transmission and/or structural damage, serious damage to the
vehicle, loss of control and personal injury.
Note:For trailer towing information refer toTrailer towingfound in
this chapter or theRV and Trailer Towing Guideprovided by your
dealership.
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GVW (Gross Vehicle Weight)– is the Vehicle Curb Weight + cargo +
passengers.
GVWR (Gross Vehicle Weight
Rating)– is the maximum
allowable weight of the fully loaded
vehicle (including all options,
equipment, passengers and cargo).
The GVWR is shown on the
Safety Compliance Certification
Label located on the driver’s
door or B-Pillar. The GVW must
never exceed the GVWR.
Exceeding the Safety Certification Label vehicle weight rating
limits could result in substandard vehicle handling or
performance, engine, transmission and/or structural damage, serious
damage to the vehicle, loss of control and personal injury.
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GCW (Gross Combined Weight)– is the weight of the loaded vehicle
(GVW) plus the weight of the fully loaded trailer.
GCWR (Gross Combined Weight Rating)– is the maximum allowable
weight of the vehicle and the loaded trailer – including all cargo and
passengers – that the vehicle can handle without risking damage.
(Important: The towing vehicle’s braking system is rated for operation at
GVWR, not at GCWR. Separate functional brakes should be used for safe
control of towed vehicles and for trailers where the GCW of the towing
vehicle plus the trailer exceed the GVWR of the towing vehicle.The
GCW must never exceed the GCWR.
Maximum Loaded Trailer Weight– is the highest possible weight of a
fully loaded trailer the vehicle can tow. It assumes a vehicle with only
mandatory options, no cargo (internal or external), a tongue load of
10–15% (conventional trailer) or king pin weight of 15–25% (fifth wheel
trailer), and driver only (150 lb. [68 kg]).Consult your dealership (or
theRV and Trailer Towing Guideprovided by your dealership) for
more detailed information.
Tongue Load or Fifth Wheel King Pin Weight– refers to the amount
of the weight that a trailer pushes down on a trailer hitch.
Examples:For a 5,000 lb. (2,268 kg) conventional trailer, multiply 5,000
by 0.10 and 0.15 to obtain a proper tongue load range of 500 to 750 lb.
(227 to 340 kg). For an 11,500 lb. (5,216 kg) fifth wheel trailer, multiply
by 0.15 and 0.25 to obtain a proper king pin load range of 1,725 to 2,875
lb. (782 to 1,304 kg)
Do not exceed the GVWR or the GAWR specified on the
certification label.
Do not use replacement tires with lower load carrying capacities
than the originals because they may lower the vehicle’s GVWR
and GAWR limitations. Replacement tires with a higher limit than the
originals do not increase the GVWR and GAWR limitations.
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Exceeding any vehicle weight rating limitation could result in
serious damage to the vehicle and/or personal injury.
Steps for determining the correct load limit:
1. Locate the statement “The combined weight of occupants and cargo
should never exceed XXX pounds” on your vehicle’s placard.
2. Determine the combined weight of the driver and passengers that will
be riding in your vehicle.
3. Subtract the combined weight of the driver and passengers from XXX
kilograms or XXX pounds.
4. The resulting figure equals the available amount of cargo and luggage
load capacity. For example, if the “XXX” amount equals 1,400 lb. and
there will be five 150 lb. passengers in your vehicle, the amount of
available cargo and luggage load capacity is 650 lb. (1400 – 750 (5 x
150) = 650 lb.).
5. Determine the combined weight of luggage and cargo being loaded on
the vehicle. That weight may not safely exceed the available cargo and
luggage load capacity calculated in Step 4.
6. If your vehicle will be towing a trailer, load from your trailer will be
transferred to your vehicle. Consult this manual to determine how this
reduces the available cargo and luggage load capacity of your vehicle.
The following gives you a few examples on how to calculate the available
amount of cargo and luggage load capacity:
•An example for your vehicle with 1400 pounds of cargo and luggage
capacity. You decide to go golfing. You and your friends average 220
pounds each and the golf bags weigh approximately 30 pounds each.
Is there enough load capacity to carry you, 4 of your friends and all
the golf bags? The calculation would be: 1400 – (5 x 220) – (5 x 30) =
1400 – 1100 – 150 = 150 pounds; yes, you have enough load capacity
in your vehicle to transport 4 of your friends and golf bags.
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•Another example for your vehicle with 1400 pounds of cargo and
luggage capacity. You and one of your friends decide to pick up
cement from the local home improvement store to finish that patio
you have been planning for the past 2 years. Measuring the inside of
the vehicle with the rear seat folded down, you have room for 12-100
pound bags of cement. Do you have enough load capacity to transport
the cement to your home? If you and your friend each weighed 220
pounds, the calculation would be: 1400 – (2 x 220) – (12 x 100) =
1400–440–1200=–40pounds; no, you do not have enough cargo
capacity to carry that much weight. You will need to reduce the load
weight by at least 240 pounds. If you remove 3-100 pound cement
bags, then the load calculation would be:
1400 – (2 x 220) – (9 x 100) = 1400 – 440 – 900 = 60 pounds; now you
have the load capacity to transport the cement and your friend home.
The above calculations also assume that the loads are positioned in your
vehicle in a manner that does not overload the Front or the Rear Gross
Axle Weight Rating specified for your vehicle on the Certification label
found on the driver’s door.
Special loading instructions for owners of pickup trucks and
utility-type vehicles
For important information regarding safe operation of this type
of vehicle, see thePreparing to drive your vehiclesection in
this chapter.
Loaded vehicles may handle differently than unloaded vehicles.
Extra precautions, such as slower speeds and increased stopping
distance, should be taken when driving a heavily loaded vehicle.
Your vehicle can haul more cargo and people than most passenger cars.
Depending upon the type and placement of the load, hauling cargo and
people may raise the center of gravity of the vehicle.
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TRAILER TOWING
Your vehicle may tow a class I, II or III trailer, provided the maximum
trailer weight is less than or equal to the maximum trailer weight listed
for your engine and rear axle ratio on the following charts.
GCWR (Gross Combined Weight Rating)/Trailer Weights
EngineRear
axle
ratioMaximum
GCWR - lb.
(kg)Maximum
Loaded
Trailer Weight
- lb. (kg)Maximum
frontal area of
trailer - ft
2
(m2)
E-150 Regular Van (6700 GVWR)
4.6L 3.5511500
(5216)6500 (2948) 60 (5.52)
5.4L 3.5512000
(5443)6900 (3130) 60 (5.52)
E-150 Regular Van (Crew) (6700 GVWR)
4.6L 3.5511500
(5216)6200 (2812) 60 (5.52)
5.4L 3.5512000
(5443)6600 (2994) 60 (5.52)
E-150 Regular Van (7000 GVWR)
4.6L 3.5511500
(5216)6500 (2948) 60 (5.52)
5.4L 3.5512000
(5443)6900 (3130) 60 (5.52)
E-150 Regular Wagon (7–passenger) (7000 GVWR)
4.6L 3.5511500
(5216)5800 (2631) 60 (5.52)
5.4L 3.5512000
(5443)6200 (2812) 60 (5.52)
E-150 Regular Wagon (8–passenger) (7000 GVWR)
4.6L 3.5511500
(5216)6100 (2767) 60 (5.52)
5.4L 3.5512000
(5443)6500 (2948) 60 (5.52)
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GCWR (Gross Combined Weight Rating)/Trailer Weights
EngineRear
axle
ratioMaximum
GCWR - lb.
(kg)Maximum
Loaded
Trailer Weight
- lb. (kg)Maximum
frontal area of
trailer - ft
2
(m2)
.E-250 Regular Van (8600 GVWR)
4.6L 4.1011000
(4990)5600 (2540) 60 (5.52)
5.4L 3.7313000
(5897)7500 (3402) 60 (5.52)
E-250 Regular Van (Crew) (8600 GVWR)
4.6L 4.1011000
(4990)5300 (2404) 60 (5.52)
5.4L 3.7313000
(5897)7300 (3311) 60 (5.52)
E-250 Extended Van (8600 GVWR)
4.6L 4.1011000
(4990)5400 (2449) 60 (5.52)
5.4L 3.7313000
(5897)7300 (3311) 60 (5.52)
E-250 Extended Van (Crew) (8600 GVWR)
4.6L 4.1011000
(4990)5300 (2404) 60 (5.52)
5.4L 3.7313000
(5897)7300 (3311) 60 (5.52)
E-350 Regular Van (9500 GVWR)
5.4L 3.5512000
(5443)6300 (2858) 60 (5.52)
5.4L 4.1013000
(5897)7300 (3311) 60 (5.52)
6.8L 3.7315000
(6804)9200 (4173) 60 (5.52)
6.8L 4.1017700
(7711)10000 (4536) 60 (5.52)
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