Yes, I stated that the chassis was the same. But the 22" tires "usually" do have more capacity depending on which size tire is used.
The following is probably far more information than anyone wants! But I had fun learning about it.
As best as I can determine from digging around on the Ford website (believe me there is room for error. Its not exactly clearcut) If any of you have a windsport/hurricane with 22.5 inch tires please post what your factory sticker says.
The Ford F53 chassis has 7 versions that range from GVWR 16,000# to 26,0000# and GCWR from 22,000 to 30,000#
windsport/hurricane models :
31,32,33 series use the 228" wheel base with GVWR 22,000# and GCWR of 26,000 #
34,35 use the 242" wheel base with GVWR 22,000 and GCWR of 26,000 #
If 19.5" tires are used they are 245/70 R19.5G Total load at 110 PSI is 26,220# max load with 6.75 inch rim (inc de-rating for dually)
As best as I could determine from some 2018 data, if you have 22.5 inch tires they are 235/80 R22.5"G with 7 or 7.5 inch rim and at 110 PSI are rated at 26,990 # load. Only an additional 650 #. However with the 22.5 inch tires with the wider 7.5 " rims you do have the option of moving up to a much hinger load rating which is obviously what the larger heaver rigs have to do.