[amk2912]

Personally, I'm waiting for the TT 4.4 V8 (that's in the X6 xDrive5.0) to make it into the X5.

My 3.0 E53 has spent the last few days cruising around the Margaret River region and I must say it was comfortable on all surfaces, including rough corrugated dirt tracks. It's amazing what a set of Michelin Latitudes can do for a comfortable ride!

I'd be worried that the ride in an X5M/X6M would be as tight and butt aching as my E90 M3 (even in "comfort" setting) on less than perfect roads hence why I'd prefer a TT V8 in a standard E70. My kids get a bit spewy and green in the back of the M3 but no problems in the X5.