Both of these are really great man. If I had to crit something I would say the typo/logo is abit lacking in the first one. I mean yeah its the one from the movie but I think that it might be abit to small compared to tire and the empty space in the image. Though I think it would look pretty neat if the Ghost rider text in 3d aswell. =) It would probably fit better.
Again though it looks great and I love them. You did a great job on both.