I like the idea, but it is difficult to see details. The lighting was challenging. If you exposed for the shadows, the tire would be too bright. If you exposed for the brightness on the tire, then the rest becomes under-exposed. Perhaps the best solution would be a different time of day.
Best of luck in all the challenges.
Composition: Pic looks a little cluttered, which may be the focus. Otherwise, very good choice. May have cropped that little white line at the top out.
Technical: I really like the lighting.
Meets challenge: Yes
Overall impression: Very interesting, but the b&w makes it a strain to process the pic.
Not a bad idea (subject) but the shot is weak. I can't see much of the tractor. The light is very strong in one area (tire) and very weak in the rest of the shot. THIS is always a problem in photos. I love shadows and shots of shadows...and like I say your idea is good but it's not seen well here.
Seems a tad out of focus. Also, the lighting seems a bit harsh especially on the wheel. You have a good choice of subject matter for your B&W and it definately meets challenge, but I think I would prefer to see more of the tractor. 4 Good luck in the challenge.