Thank you very much for the clarifications.
I will make the purchase as soon as the dollar stabilizes here. (Even with the fear that support for UE4 may cease, I believe that with the resources already available I will be able to finish the project)
Regarding Q3, I was confused, is the cylinder cast more performant than the multi line trace? My original idea was: Single line trace at high speed, multi line trace or sphere trace at moderate speed and cylinder cast at low speed.
Another thing I forgot to ask, can I change the pivot of the physical wheel? This would make the rotation of the wheel in relation to the kingpin more correct, otherwise, if it rotates on its own axis, it would make a considerable difference in relation to the visible wheel.