I believe many vibrations experienced are down to the haldex system. My vehicle started vibrating and juddering when pulling out of a junction. I then fitted new tyres to the rear, this made the vibration and juddering a lot worse, infact it even started doing it going round slight bends at any speed, more engine load enhanced the problem. I then change the tires front to back, this brought it back to its original problem of only vibrating and juddering when pulling out of junctions, but less severe. Next I did an Haldex oil change and cleaned the filter, this has virtually eliminated the problems altogether. I'm going to do another oil change on the Haldex system in the next thousand miles to see if that eliminates it altogether. If it doesn't then I will throw a new pump on it because they seem prone to losing pressure and failing around 70000 miles.
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