I've only seen the Series 1 wishbones fail, but that doesn't mean it wont happen on the later cars

The lower front wishbone typically fails where the caster rod bracket is welded on (circled in red) with the crack rotating around the tube

These are a set I reinforced for racing years ago in the same way we did for the British GT car, by welding in additional sheet metal to prevent the wishbone from lozenging.

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The top rocker arm fails around the pivot tube boss

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The rear lower wishbone likes to bend where the coilover is fixed to it

Simon @ Sifab.co.uk

Sifabtemporary@gmail.com