Toyota Corolla 2010 Quick Reference Manual page 184

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Trailer tongue load
The trailer cargo load should be distributed so that the tongue
load is 9 to 11% of the total trailer weight, not exceeding the
maximum 150 lb. (68 kg). (Tongue load / Total trailer weight x
100 = 9 to 11%)
The total trailer weight and tongue load can be measured with
platform scales found at highway weighing stations, building
supply companies, trucking companies, junk yards, etc.
Towing a trailer
Contact your Toyota dealer for further information about additional
requirements such as a towing kit, etc.
Hitch
Trailer hitch assemblies have different weight capacities established
by the hitch manufacturer. Even though the vehicle may be rated for
towing a higher weight, the operator must never exceed the maxi-
mum weight rating specified for the trailer hitch.
Total trailer weight
Tongue load
I n f o r ma t i o n P r o v i d e d b y :
2-5. Driving information
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