Not really, the roundness of the shape from a baking perspective is conveyed perfectly by the smoothing of the object, without pushing it into a shape that does not match your lowres. Your highres mesh need only be high poly enough to convey the shapes you ACTUALLY need to transfer, in this case the roundness of the wheel…
Your textures reads very bad. Your material definition is poor. And the color scheme is pretty boring, though that's my personal opinion. The textures feels very blurry and no detail is really shown. Your scratches is pretty random to. Go back and search for some nice damaged/weathered/painted metal and mimic that. Your…
Alright, to put the matter to rest once and for all, here are a few more tests, in a realsitic(and very similar to this) situation. A. High res modeled with details that "match" the roundness of the low(without treads) B. High res modeled with details that "match" the roundness of the low(with treads) C. High res modeled…