That's probably a good point, but I can't think that having the play in the metal parts is a good thing? Hard rubber or not.
The real McCoy would be polyurethane bushes if they do those bobbins in that material.
It's so much better that the "Rubber"! that is used in bushes of that kind.
I put Powerflex Polyurethane anti roll bar bushes in my Alfa and they made a great handling car even better...
I so need another Alfa..
