Hi ! I updated recently simhub to address this issue, indeed some rf2 cars are not giving grip data, I added a workaround with tyre wear, it's way less precise but it's better than an earth-quake
. What version of simhub are you running ? This fix has been available for a few weeks now. I will double check as this fix was a little hard to make. Detecting telemetry "aberrations" is not really straight forward
About g-forces, no no it's a regular effect like any other, it allows you to feel how strong you are accelerating/breaking, seen from the driver point of view. It could be indeed the base of a seatbelt effect but I'm not here yet
(even if I'm slowly , really slowly, preparing the terrain for motion
)