More feedback needed - but so far the vibration issue seems a problem on very low milage Grenadiers (as many owners have now experienced it) that may need to be addressed.
Around 2,000rpm.....but is it only in 8th gear and only at higher speed (+70mph) or at other speeds & gears.
There are a whole lot of different factors causing this vibration: so until we have more info on the exact circumstances; revs, speed, gears, turning, straight line driving, diff locks on or off, other driving modes etc. etc. it would be hard to know the appropriate response.
It's difficult to imagine this didn't occur and was remedied during the +1 million KM's of testing the BMW engine mated to the ZF.
Was this issue commented on in any of the Scottish drive reviews?