Truck Width - Help if Possible

[Zilverado]

For starters, let me just say that I do not have ready access to my truck at this point in time, otherwise I would not be asking the following question.

This is for those of you out there with stock mirrors like those on my truck (photo below)...

What is the total width of the truck - from tip to tip of mirrors. I realize it depends a bit on the angle of the mirrors, but I'm after a fairly accurate measurement here. I'm planning some modifications to the door of our existing attached garage (in preparation for the new detached one). So, any help would be great to help me plan things out.

Thanks in advance.