Subaru 2003 Impreza - Manual (Page 284)

IMPREZA(NA) A1850BE-A (ENGLISH)
8
Driving tips
8-31
– CONTINUED –
B Tongue load
Tongue load
Ensure that the trailer tongue load is from 8 to 11
percent of the total trailer weight and does not
exceed the maximum value of 200 lbs (90 kg).
1) Jack
2) Bathroom scale
The tongue load can be weighed with a bathroom
scale as shown in the illustration below. When
weighing the tongue load, be sure to position the
towing coupler at the height at which it would be
during actual towing, using a jack as shown.