I always lose my pace due to tyre wearing after 6 laps (50% distance), however AI seems to be unaffected by this tyre effect. Since I can check every AI's lap time in the race director, it's clear that AI's lap seems to remain the same thorough the whole match. every match, I always get rid of AI behind me in the first and two lap and then caught by them after 5 or 6 laps before first stink. I'm quite annoyed by this. And I wonder if this is only my misunderstand or an existed bug that many gamer have also met. maybe my driving style or car set up wear tyre quickly?