Not a fan of the burnt edges & HDR either, I do however like the b/w seatshot it seems to be a nice touch like you said not a bad way of isolating the Italian heritage but i'm no pro.
First shot is nice, I like how monotone and muted the background is to allow the bike to pop. The final shot, I like the lighting and how the rotors illuminate with a longer exposure, but I also agree its a tad underexposed - that and the annoying blue reflection on the tank. The final shot from your second lot has to me, too shallow DOF leaving the front part of the bike slightly out of focus - maybe intentional, but it doesn't works for me. I think some of the angles the bikes just awkward looking, not much you can do about that. I quite like first shot of your second lot, although the semi does detract when its easily recognizable (as compared to your first posts first shot, that draws you right to the bike)
Overall though, pretty solid effort - sexy bike, at least side on
maybe try other locations?