Re: 60 FPS is faster also on traction
In the extensive tests made by Gillon he didn't find any traction improvement from lowering FPS, just more traction stability. The major differences of low FPS is how much you can cut corners and how little curbs impact the car, conversely however lower FPS has a negative impact on suspensions and force feedback, hence you feel much more bumps on the road and there's more latency involved when using a wheel.
Overall higher FPS gives a much smoother feel on the driving, but lower FPS has the huge benefit of being able to cut corners and going over kerbs without being jumped around. In traction there can be some difference but it is mostly inconsequential.