Here`s wheel wireframe screenshot:
I experimented with lot of setups and something quite unexpected happened - when I placed wheels, sprockets, idlers and suspension handlers in line and edited suspension array I achieved this:
This gave me idea - I`ve edited in array all spline nodes without suspension handler (near sprocket and idler), what in editor looked like this:
But in game…:
Looks fine and behaves properly, but for me it looks like placeholder 
Sorry for messed pictures, my bad.