Tole zna prav priti:
Keep your line through corners, let the LMP find their way through. Reason being, if you try to do something out of ordinary, you might close the gap LMP was going for and cause an accident. This are the rules in real life as well.
Of course on the straight and whenever possible try to make it easier for them to pass, but do it in good time (in advance), so that LMP could read your moves. What I would do for example, is if I see LMP approaching me before corner, I would lift off earlier than normal and let the go ahead, even though its at my expense. Its up to you o