Nothing against old tractors as a photographic subject, they are a good subject.
As to this particular photo - which sports wonderful, warm, soft colours that I like! - I feel the focus is not right. Well, sure enough that one tyre is in focus, i.e. the one that you WANTED to be in focus, but the very thing you did put into focus also is in total darkness. Which is why I feel there are two things competing with each other. The viewer's eyes will invariably be drawn to the lighter parts of your photo, and everyone will then think: "Hang on, this is not sharp", whereas what IS sharp is only like "a remark on the side". Those two things don't go together. See what I mean?