I don't know whether this is just my imagination, but there seems to me to be differences in the geometry of TT and career races. (I have not checked grand prix mode). The one that stuck out most for me was Bahrain - the short stretch between the penultimate and final turn into sector 3. It seemed considerably shorter in career. I tend to learn the circuits in TT. When going on to career, the circuits don't seem the same in a few odd places; kind of a Twighlight Zone experience. Or is it just my imagination?