Forum adverts like this one are shown to any user who is not logged in. Join us by filling out a tiny 3 field form and you will get your own, free, dakka user account which gives a good range of benefits to you: No adverts like this in the forums anymore. Times and dates in your local timezone. Full tracking of what you have read so you can skip to your first unread post, easily see what has changed since you last logged in, and easily see what is new at a glance. Email notifications for threads you want to watch closely. Being a part of the oldest wargaming community on the net. If you are already a member then feel free to login now.

Can a vehicle, in this case my friend has been using DE raiders and venomds, move its movement distance and then after moving make a 360 degree turn to face a unit?

So move one way and then rotate compeltly around or must it stay facing the direction it moves in?

In the rule book all it says is in their movement phase then can pivot i see nothing about after moving.

A 360 degree pivot will mean it's facing the same way it started...
Anyway, as you mentioned, you may pivot any vehicle (except flyers) any number of times during the movement phase, including at the end of your movement. So as long as he pivoted before starting to move his next unit this is fine.

Then he moves 11.999999" and pivots. During movement has to include I've moved X distance and pivot, where X is an allowed distance. Just because you mvoe your maximum distance does not mean you movement has finished