A friend is thinking on getting the 400i auto. Is this true 4x4 or is it limited slip i.e. 3.5 wheel drive? Will all 4 tires pull?

 

It isn't a true 4x4, but it's still a really good machine. The large amount of wheel travel usually keeps both front wheels planted firmly so he would probably only notice a differance in mud and really off camber situations.