I was just going to add to this thread, I now have a bit of time in a New Holland TN-85F, a Landini 85 hp orchard tractor that I can't recall the name of and my MF with the big radials almost rubbing the wheel liners and sometimes kissing the fuel tank. All have radials.
The long wheelbase of the NH is great for the bumps the front end goes over but the ride at the rear is terrible. Its worse than my little L5030HSTC Kubota. I'm not sure how one could operate it all day. It had a full rack of weights on the front and supersteer axle. Seat has maybe 2" of travel. Narrow stiff tires with lots of side toss, feels like you are sitting on the deck of a hay wagon going on gravel surfaces.
The Landini was the old style, pre-flat floor and had a loader. It was also rough as can be, the orchard cab so tight I tended to hit my head a lot. When carrying a load on the 3 point ride improved but not great.
My MF5455 with the tires moved in also rides much poorer. I was amazing how much head toss there is side to side. I hit my head on the pillar on the road going over a pothole. I will be setting the rims back out wide this fall. With about 3-5000 lbs on the three point the ride improves as the tires will finally soak up a bump.