So I took the images from the GTAV Manual app that was released today and stitched together the images that form a map. I only used the 3rd level out of 6 because anything else would have been way too large. I am putting together all the images to complete all levels of map. The final map will be extremely large so I hope my computer doesn't crash.
Anyway here is the 1920x1080 image for use as a wallpaper.