From JohnnyQuik in the "where are my shims" topic:
"It appears the shims were used by Lotus as a way of reducing negative camber and, therefore, front cornering grip. Combined with the too skinny front tires, this helps ensure the front tires break loose before the rear reducing the chance of snap oversteer to which mid-engined cars are prone. This is the safest set-up for untrained drivers on public roads. A drivers natural reaction to to lift off the throttle if the tires start to lose grip. It the front tires loose grip first and the car is understeering (pushing), then lifting off the throttle will likely help straighten the car out and allow the driver to regain control. If the rear tires lose grip first and the car starts to rotate (oversteer) then lifting the throttle will cause the car to spin, which would be a very dangerous situation. Lotus dialed in understeer like every other manufacturer because it makes the cars safer for the masses."
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JohnnyQuik
I keep thinking this spinning out is due to inexperienced 20-something drivers, but could it be folks who've removed their shims, thinking they were better than they are?
I have experienced panic induced trail-braking by overcooking a turn and the whole car gets evenly squirrelly, rather than spinning out.