What your explaining still sounds like your tyres are over inflated to me If they're set at 2.2 bar/32psi which is the correct pressure then I don't understand it Try dropping the pressure down to 2.1bar/30psi and see how it feels is the only thing left I can suggest
I've got a set of 15" steelies I use in the winter and they have those Michelin energy non runflats you have and I don't have any of issues your experiencing...........weird