hayaku is correct- instigating a drift is the slow way around the track. The trick is learning to drive at the limit while taking the vehicle's limitations into account. Watch a road race sometime- you can see it even in a NASCAR road race- the drift is instigated by speed, not violent movements of the throttle or steering. Smooth is fast and if smooth instigates a little drift, you are at the limit.

When I had my 4.4 I had the opportunity to push the X hard on some great back roads in northern PA and in parts of West Virginia. What I found was that I didn't have the stones to get to the limit with the 19's on it in the summer. I could get there with the 17's and winter treads. For a heavy vehicle, the X5 sticks like glue.

__________________
Dave

'05 325xi
'10 E70 35d
'85 911 Carrera
'66 911 Work in progress
'91 Chevy C1500
'95 Jeep Cherokee
‘18 Jeep JLU