After I'd had four wheel tracking on new tyres done by MGR on a brand new laser rig, my Gunson gizmo indicated a small residual shear on both rears. Following a small tweek to get zero shear, the drive was noticably nicer. The Gunson hits your individual sweet spot. The Hunter tracking rig puts the wheels into specification. This is always a small range within which lies your sweet spot.
TC
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