Actually, if constructed correctly, the wishbone is about as bind free as you can get.
There are 2 definitions of a wishbone...
The off-road guys refer to triangulated upper links with a single pivot on the axle housing (basically a trinagulated 4 link design). No real problems with that, except you have a relatively high, non-adjustable roll center (the axle pivot).
Drag racers refer to a Y shaped assembly that mounts between the lower links of a straight 4 link suspension. This design won't allow quite as much roll, and offers a very low, non-adjustable roll center. Either type should perform well enough, as long as the link angles are at least 60deg to each other.
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Ray Kaufman-Wyotech chassis fab instructor
Custom suspension design and consultation.
(Now 2) Big Block asphalt supermodified ('cause too much is never enough...)
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