When in triptronic mode the car chooses the right gear for the driving you are doing up to the gear you have selected.
ie. when in 3. If you stop it will use 1,2nd & 3rd as you accelerate. ; in 2, only 1 or 2 are selected. etc.....
It holds the gear slightly longer than in D.
Jetwreck and I have done it, not sure about everyone else. No ramifiactions. If you are not happy you can change it back in 5 minutes.
Bis-e-Bee, stamps cost extra