I wouldnt adjust anything for the shorter tires. If youre only using them for autox the speedo being off doesnt matter because of the short amount of time youll be on them
That's what I was thinking. I have track wheels/tires that I'll be installing after I get to the event, and since the trans
won't be shifting on its own, the speedo being off isn't a big deal. If I'm wrong on that, someone let me know.