I take these comparisons of sprung and unsprung weight with a bit of salt.
Taking off 96kg of sprung weight is taking off 96kg of tangible weight.
Changing alloys is taking off 15kg of tangible unsprung weight, and then we have the multiplier, which Hurdy puts at 5 (96/19), but some other guy may put at 6 or 3..
Changing from MonzaII to Alleggerita I feel the car moves somewhat smoother over rough surface, that's all I tangibly feel. Improved acceleration, deceleration - maybe, as I still lost 15kg of static weight.
Are there any tests that show how changing alloys improves things? (acceleration/deceleration/lap time etc)
Are there any tests that show that 15kg of unsprung weight loss is equivalent to say 96kg of sprung weight loss? (acceleration/deceleration/lap time etc)
So far it is all hearsay evidence, somehow, don't you think?