Hello ! I have an Omega B Caravan , EZ 98 , X25XE with manual transmission and at 50 km/h in the 3rd gear and at 80 km/h in the 4th it vibrates from the rear axle – my feeling to the right. Wheel bearings , axle bearings and hardy disks are obviously in order. Vibrating occurs only at the mentioned speeds and that is very annoying because it vibrates inside and in 70`s zones permanently. 10 km/h over it is gone…. Do you have a tip for me ?