Re: Older information needed

For what it is worth, I have a 1996 Fleetwood Prowler 22LU (dual axle) that has a similar look and vintage to your trailer. They call it a 22 ft trailer, although the slanted front makes it a bit ambiguous where you should measure to. The sticker on the side is fading (VIN almost gone) but I recently documented it all for future reference before it is all gone. I have upgraded from B load range to D load range.  But this info might give you a rough idea:

Trailer GVWR 5200 lbs
Original Tires ST 205/75R14B @ 35 PSI cold
Currently Using ST 205/75R14 Load range D   Carlisle @ 40 PSI cold
Original Rims  14x5.5