Basically this: https://forums.gta5-mods.com/t…e-real-mirror-of-vehicles
Actually after doing it a while, I noticed you can just do 1 click on front view for X & Y, and one on left view for Z, rather than 9 as the tutorial suggests.
After some practice you'll learn the best pivot placement to get the reflections to be closer to how they would be irl.
Thanks bud. Much appreciated