Theres been some AI changes that you can make that will help
Put the aggression to 100% - they will try to pass more rather than run into the back of you.
Go into your PLR file (rFactor\UserData\Your name\your name.plr) and change "AI Limiter="1.00000"" to "AI Limiter="0.00000"". It will make the AI have more consistant lap times rather than jumping up and down by a few seconds at a time, it'll also spread the cars out a little bit rather than having huge big groups which cause AI problems
MikeZ (The ISI AI Programmer) posted on RSC asking for Videos and Replays where the AI have caused problems, he is paying attention and is working to improve it
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