qx56 4wd vibration

[pemarsh]

Currently own a Lexus LX 470.Looking to purchase a new QX56. However, when test driving the QX56 I noticed a floor vibration when accelerating--but only when it was in 4wd. Is this a known issue? I would be surprised if it was a normal trait as the salesperson told me it was. (I have owned many 4wd suv's--none have vibrated like this when in 4wd mode)

Thanks for any and all comments.

[Big-Bird]

Currently own a Lexus LX 470.Looking to purchase a new QX56. However, when test driving the QX56 I noticed a floor vibration when accelerating--but only when it was in 4wd. Is this a known issue? I would be surprised if it was a normal trait as the salesperson told me it was. (I have owned many 4wd suv's--none have vibrated like this when in 4wd mode)

Thanks for any and all comments.

That salesman might think it's normal but from my own experience of driving the 2005 and 06 Armada and Titan at my local dealership I didn't feel vibrations in any of the 4 models I drove (same drive train as the QX56). Sounds a bit fishy to me....but perhaps our fellow Armada or QX56 owners can provide their thoughts on this.