Distance of kingpin on trailers for use with tandem axle

[thomastractorsvc 1,365]

I am now on the hunt for an older lowboy trailer (25-30 ton) and was wondering about the king pin distance to be compatible for a tandem axle truck, I have looked at a couple trailers and I thought the gooseneck was short for a tandem and they looked like they were set up for a single axle, and of course everyone all say they will hook up, just don't want to have the fifth wheel all the way to the rear and tear up the mud flaps when turning.

If I was looking for a new model wouldn't have the concern, they are just out of my price range so I will probably end up with a 1960-70s year that needs decking, paint and repairs.

[slpwlker 715]

Hmm thinking for most tandems should be like a 96" swing clearance or less. about a 8' neck. mine goes from 105 to 125" swing and is perfect for a triaxle. what are you hauling?

[thomastractorsvc 1,365]

Nothing yet still hauling with my 1 ton and gn trailer, would like to use it to haul, equipment/tractors and old macks, now that I bought my R, always fun trying to expand a business on a budget.