Determining Compatibility Of Tire And Vehicle Load Capacities - Subaru 2007 Forester Owner's Manual

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3. The result of step 2 shows that a
further 162 lbs (73 kg) of cargo can be
carried.
Example 2B
For example, if a person weighing 143
lbs (65 kg) and a child weighing 40 lbs
(18 kg) now enter the same vehicle
(bringing the number of occupants to
three), and a child restraint system
weighing 11 lbs (5 kg) is installed in
the vehicle for the child to use, the cal-
culations are as follows:
1. Calculate the total weight.
Total weight
= 165 lbs (75 kg) + 143 lbs (65 kg)
(Occupant)
+ 40 lbs (18 kg)
(Occupant)
+ 11 lbs (5 kg) + 375 lbs (170 kg)
(Child restraint)
+ 22 lbs (10 kg) + 176 lbs (80 kg)
(Trailer hitch)
= 932 lbs (423 kg)
2. Calculate the available load capac-
ity.
D00109
3. The total weight now exceeds the
capacity weight by 32 lbs (15 kg), so
the cargo weight must be reduced by
32 lbs (15 kg) or more.
Determining compatibility of
tire and vehicle load capaci-
ties
The sum of four tires' maximum load
ratings must exceed the maximum
loaded vehicle weight ("GVWR"). In
addition, sum of the maximum load
ratings of two front tires and of two
rear tires must exceed each axle's
(Cargo)
maximum loaded capacity ("GAWR").
Original equipment tires are designed
(Tongue load)
to fulfill those conditions.
The maximum loaded vehicle weight
is referred to Gross Vehicle Weight
Rating (GVWR). And each axle's
maximum loaded capacity is referred
to Gross
(GAWR). The GVWR and each axle's
GAWR are shown on the vehicle cer-
tification label affixed to the driver's
door.
The GVWR and front and rear
GAWRs are determined by not only
the maximum load rating of tires but
also loaded capacities of the vehicle's
Axle Weight Rating