I bought a 2005 Ducato/Burstner 41000 ml with horrible buzzing noise. rim is not shaking but slightly grinding sound. I take wheel balance and check tyres but did not change anything. I tried to change the wheel bearing but its not home job. I have replaced many times the VW T4 bearings but Ducato is formidable.
The original bearing is taper roller. febi is dual ball bearing made in France.