ITAC News.

[spawpoet]

They are essentially teh same save for spring/shock location. On the Z, the spring/shock is part of the hub assembly; on the Z3 it is on the trailing arm.

Both use large a-frame based trailing arms, and flexible halfshafts. It's essentially the same suspension, the only difference is that on the Z3 the diffcarrier is integral to the "subframe" while on the Z it bolts in/on.

Why should bushings be free on one and not the other? Makes no sense.

I don't think it makes any sense, but to me it makes no more or less sense than if we figured out the z's bushings were open, while mounts like those in the Miata's, and BMW's and other cars that were not part of a subframe were limited to a stock component. Again, I think this further reinforces the need to simply open all mounts/bushings up in term of material.