Sorry my bad it doesnt have anything with acknex's entity matrix. But about the newton matrix it gets it from a dll function. And there isn't any problem with all earlier A7 versions, i get this situation only with 7.77. Since i didn't changed the Newton dll and since everything is same; whre might be the problem? I'm confused... :S

An example of visual tire update is like this (its in a loop):

Code:
for (tireId = NewtonVehicleGetFirstTireID (car_joint); tireId!=NULL; tireId = NewtonVehicleGetNextTireID (car_joint, tireId)) 
	{
		dummyEnt = NewtonVehicleGetTireUserData (car_joint, tireId);
		NewtonVehicleGetTireMatrix(car_joint,tireId, m);
		ent_setmatrix_rb(dummyEnt,m);
	}