Would be very interested in viewing the test results.
Adhesives soften & weaken with increased temperatures.
A hot summer's day, hot engine compartment temperatures transferring that accelerated heat to the rear deck lid's metal & the adhesive being softened/weakened by those combined contributing factors.
I wonder if any modern day rear wings are applied with 2 sided tape from the factory that are high speed tested at 140mph+++
Since the weight distribution from the factory is 41/59, the best improvements are down force on the front-end.
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