The information about the relative weights of the standard MWS wire wheel and tyre combinations compared to the Turrino wheel is covered fully in Phil Gardners (R1NGA) excellent M3W handling articles in the MTWC Bulletin magazines dated Feb and March 2021. https://www.mtwc.co.uk/5-speeder-articles-from-the-bulletin/ The difference in static weight for those two is 3.3Kg but that is only part of the story.