Toyota 2009 Tacoma User Manual page 205

Trailer tongue load
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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 load of the following.
Without towing package
350 lb. (158 kg)
With towing package
However, if towing with a fifth wheel trailer, the cargo load must
be distributed so that the tongue load is 19 to 21% of the total
trailer weight.
The total trailer weight and tongue load can be measured with
platform scales found at a highway weighing stations, building
supply company, trucking company, junk yards, etc.
650 lb. (294 kg)
2-5. Driving information
Total trailer weight
Tongue load
2
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