In the sales info published by Enkei they claim that 1 kilogram of weight saved on the wheel is worth 20 off the car.
Since I can not nearly equate that, I asked them how they arrived at this ratio.
I received answer prompty.
That is is a complicated matter influenced by many variable factors prventing an excact answer but they gave me a link to technical explantions:
https://rqriley.com/automobile-ride-handling-and-suspension-design-and-implications-for-low-mass-vehicles/?fbclid=IwAR1Fq3I4fVuid8F0e5tWnv9RB0huBIif0JKlXuQGsml9C0gAEed2NY7V3rU
Interesting as the article is, I find it very basic and nowhere quantifying the mentioned ratio.
Nevertheless I think it worth reading as it sure points out that the MR2 is totally on the right track and also stated the today no longer so obvious weight thing. Enjoy.