Had 4 Michelin PilotSport4 tyres fitted today.
Car is only 1 month old but I had to get the Bridgestone tyres off!
Drove the car home and checked the tyre pressures 30psi all round.
That might be why the car was so quiet and so comfortable. All tyres now at the recommended 38psi.
Tomorrow I'll be driving on the road where I decided the Bridgestone's had to go.