i`m using on my 335 only SPORT bilstein for front axles and rear -
Shock Absorber Front Axle Right, Gas Pressure, Suspension Strut BILSTEIN
https://www.onlinecarparts.co.uk/car...brand%5B%5D=16
Using it for the mileage is already 20 000 km and until they fail, there is no squeak and they work smoothly. After it want to find something pneumatic absorbes but i didn`t know Bilstein have something like that?