I am doing an overnight test drive of a 2021 vin 69xxx w/ front laminated windows and can honestly say I don’t notice any reduction in cabin noise.
I currently own a 2018 M3 w/ 19” wheels and feel like the road noise is quite loud. I couldn’t tell any real difference in the MY and db meter readings seem to confirm there is no difference. I think the impact of these windows on cabin noise is a little overstated.
I did however notice reduced wind noise in the MY but my M3 is an earlier VIN and has lots of wind noise so that’s my only real reference point.