RMOD-K FB: Simulation T-Start time should not be set to zero !
To start the mbs simulation at time 0.0 seconds with appropriate initial conditions an internally used simulation time solves loading the tire due to the road surface height and tire rim midpoint position.
Internally used road height is moved slowly up to the desired position within the T-start time period. The given initial rolling velocity of the part rim is also used to speed up the tire rolling velocity. So please don't set the SimulationTStart time to 0.0; please use i.e. 0.1 sec up to 0.3 sec.
Otherwise, the tire is inflated and no surface height is determined and will fall down.
FlexView: Box: SimulationBox/SimulationTstart