Ya, DINS are based on a lot, and it has the a lot to do with height, weight and terrain.
Eg. I'm 190lbs, 5'11, and I park DIN 10, big mtn 11 or 12.
If I was taller, at the same weight, I'd drop my DINS. [Lankier guys need to protect their ligaments more. Longer = greater moment forces on...