Take dry pin weight..divide it by dry trailer weight...then multiple that by trailer gross----that will get you close to wet pin weight
Example: 1026# (dry pin) divided by 6910# (dry trailer) equals 0.1484 times 11551# (trailer gross) equals 1714 for wet pin weight.
I prefer using the old 20% rule Trailer gross times 20%
11551# (trailer gross) times 20% equals 2310# wet pin weight
I have found that the 20% rule is closer to actual pin weight vs the above formula (almost a 600# difference in this example) 600# difference in pin weight can be alot.
