My old '97 5th wheel rv trailer has tandem 5200 lb Dexter ax;les and weighs in the 11200-11400 lb range depending on how we load it. Now subtract 2200 lbs of pin weight = 9200 lbs on the trailer axles.....or 4600 lbs per axle. I've noticed the 23 year old springs have flattened some since new. If I keep the trailer it gets new 5200 lb Rockwell American Axles like my commercial trailers came with.
Myself...I wouldn't go with a 5-6 leaf spring on a axle that small especially a triaxle.
I've pulled several tri axle non RV GN trailers and have a triaxle GN stock trailer now (7k Axles). One thing I learned through experience out on the road is when I lifted one side of the trailer when changing a flat tire there was sometimes a side link that would flip which can be a big problem on the road getting it back in the correct position.
Lifting the end of a axle was all that was needed. Eliminates flipped links.
senior moment...Wheel weight changed to 4600 axle weight...jim
