Yair . . .
I never can understand the need for all the grouser options . . . 20", 22", 24'' on a little jigger like a Five, who could tell the difference?
If twenty inch was standard and then it jumped to a (sort of) true LGP thirty would make more sense.
As I have mentioned three inches of extra width on a fifty five ton tractor made no difference to where it could walk.
The extra width certainly never made the difference between getting bogged or not getting bogged.
As well as I remember the first popular LGP tractors over here were the Komatsu "Swampys", an early 65 on 36'' or 42'' pyramid plates and they were a revelation and made a huge difference on coastal development projects, Cat was very late to the party.
Cheers.