I was just loading fernbay gold with the lx6 and it said "warning: road tyres on rallycross track". Fe3 is not a rallyx track, so maybe this is a bug or something?

Sounds like a bug to me, are you 100% sure you were using non hybrid/knobbly tires on the lx6?

EDIT: btw, nice rig

No, it means that his line is mostly off the road... :P, The best tip is learn how to stay on the road :P

Yes, if more than 30% of your line (the darker one) is off the track, LfS considers it a RallyX-Track... Either delete the FE3.trs in your knw-folder or do enough laps so that your line is on the track again...