I rele like the first one. In the second one the background is a little distracting to me. And the third one I like except the driver isnt in the picture. I personally feel like in bike shots u should be able to see the driver well.
Bothers me too a little bit, but nothing cropping can't fix. As to getting the driver in the picture, that would mean being on the inside of the curve and then not really seeing the bike, so prefer it as is. Love the tone you chose so the texture would stand out. As to your second shot, it's nice, but the pattern of whatever in the background should fill the shot completely or be at a minimal angle of view.
I like #1 best but something about it makes me wish I could see his face, at least his eyes. #2 seems a little dark to me and I agree that the bricks? might be better if they covered the entire background. I like #3 just because I wouldn't be able to get a shot like that.