Was gonna mention this earlier and got side tracked. Europeans have been using tractors with road gear speeds of 30 mph or so for decades. Reason being their tractors get used on the roads a LOT. Way more than here. Their farms might be smaller and their fields most certainly smaller. But their tractors are used in a way we are not accustomed to here.
First time I saw a high speed tractor was in Germany. I think it was a Fendt. But because I met it so quickly I might be wrong. It was hauling butt pulling a large 4 wheel wagon. Easily 30 mph. Looked gigantic coming at me.