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Et; oops, resurrected a zombie.
I leave em in 4x4, and only shift out for road running. The 1 machine primarily does loader work. The other one runs only soft ground, has a loader as well, but not loaded tires. It might make sense to shift to 2wd when running the brush cutter, but grasses won't bind up the driveline. Another point in favor of 4x4 is that it reduces the turning radius vs. 2wd.
 

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If you have a tractor or any vehicle for that matter that has a smaller turning radius in 4wd vs 2wd I would love to see it.......I have always found the exact opposite to be true....
Look at the spec sheets.
I remember clearly that the spec on the kubota L2550dt showed tighter turning in 4wd, and I certainly felt it in the seat. Might be more of a thing with AG tires than industrials or turfs.
 

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On hard dirt or grass, it definitely turns tighter in 4x4. The chevron bars give virtually no lateral grip, so giving them drive, helps pull the front end around. The rear diff also seams to be "more open" than others, if that makes sense. It really brake turns well, but would also go double speed on the icy driveway easily too.
 

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the Kubota does turn tighter than other 4x4 tractors I've messed with (not that I have crazy amounts of seat time on different machines). It has the same style axle as the Kioti, but drag link steering instead of rack and pinion. I think that gives it a tighter cut angle.
because the cut angle is so extreme, that might be the difference with why have the front pull helps.
There might also be some weird over-riding clutching and gearing games going on too. I really don't know.
then again, maybe I am miss-remembering the spec sheet and just convinced myself that it turns tighter in 4wd.

I don't drive the Kubota much these days. It is primarily a garden tractor now.
 
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