In order to calculate the amount of weight any front
accessory, such as a snow plow, is adding to the front
axle, use the following formula:
(W x (A + W.B.)) /W.B.= Weight the accessory is adding
to the front axle.
Where:
W = Weight of added accessory
A = Distance that the accessory is in front of the front
axle
W.B. = Vehicle WheelbaseFor example, adding a 700 lb. (318 kg) snow plow
actually adds more than 700 lb. (318 kg) to the front
axle. Using the formula, if the snow plow is 4 ft. (122 cm)
in front of the front axle and the wheel base is 10 ft.
(305 cm), then:
W = 700 lb. (318 kg)
A = 4 ft. (122 cm)
W.B. = 10 ft. (305 cm)
(W x (A + W.B.))/W.B. = (700 x (4 + 10))/10 = 980 lb.
(445 kg)
So, if your truck's front axle reserve capacity is more
than 980 lb. (445 kg), you could add the snow plow
without exceeding the front GAWR.
Q:What if I want to add heavier equipment to my
vehicle?
A:You can add heavier equipment on the front of the
vehicle if you compensate for it by carrying fewer
passengers, less cargo, or by positioning cargo
towards the rear. This has the effect of reducing
the load on the front. However, the front GAWR,
rear GAWR and the GVWR must never be
exceeded.
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