Did some research about new tires...
Looking at Fulda EcoControl HP2
, I will wait for Michelin e.Primacy release to see real specs, but I don't expect any magic.
So, switching from stock Bridgestone to Fulda will gain 3.6 kg per corner (14.4 kg total).
Switching to Continental will gain 2.1 kg per corner (8.3 kg total).