Quote:
Originally Posted by Giles1234
It is not speed related. Cruise control set to 85. Going up an incline is noticeably more vibey than going down an incline. Same speed. Drop down to 7th, revs go up, same speed. Same bad vibrations.
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Try setting the drive mode to economy, go up to 85 with cruise switched off and come off the throttle, the car will naturally coast down the hill with the transmission de-clutched from the wheels (or whatever an automatic does) and the engine at idle. If the vibration goes then it must be engine/transmission related. If not it's wheels/tyres/suspension I would have thought.