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Nope - well, it's in an experimental stage in some areas, but generally no tramlines. At least not how I understand it. You leave fairly permanent tracks/ trails in the field? Some of use use skip-rows for beans - I plant with a 15 row bean planter, 15inces between the rows. The 2 rows behind the wheels are 30 inch spacing. But most have not just gone to solid seeding, and drive on a row if/ when they spray. Spray Coupe is still a sprayer manufaturer. They make 4 wheel buggies now. My neighbor had one of those old trycicle high-boy 3 wheel sprayers. Only the front wheel was powered. It was quite a sight! They were built to go through standing corn, for those who haven't seen one.
As to narrow front, heck a 700 series Ford is a rare thing 'here', but they were more standard with narrow than wide front. Wide was an option on them.
Narrow is good for real tight turns, mounted corn pickers, less hassle setting wheel spacing for row crop work, many older loaders, front mount cultivators, and so on can't clear wide front wheels. The down side is they will ball up in sticky mud, the machine is just a tiny bit more tipsy, there is a lot of weight on one spot for mud or ruts - and with the wheels not in a row it will get stuck a bit easier, and the ride is a lot rougher in plowed ground. I kept the narrow front Ollie s77 because the narrow front makes it _so_ manuverable for backing wagons, etc. --->Paul
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