The chase AI (AI control app and radial menu) seems to be surprisingly competent as of the most recent hotfix. For the most part it is good at speed control through corners and can actually catch up to the player properly now (provided it has a car with acceptable performance), and when it catches up it can either shunt the player or, surprisingly enough, execute a PIT maneuver. I don't know when this changed, but it's really nice as of now, and I hope that it doesn't get broken and revert back to its old stupid self from before in a future update. I don't really know why I feel obligated to post a thread about this, I guess I just want it to be said how much better it is now and I hope that it stays this competent in the future.
The AI is more competent than before, but This is coincidence. The Chase AI aims for the center of your vehicle, if your vehicle is very slow, they will rear end you. If your vehicle is only slightly ahead of them, they may aim towards your centerline, making it looks like a PIT