Trail package
#26
The Pirelli Scorpion ATR 275/50R20 are standard with the trail package unless you deselect the all terrain tire option. I think the Pirelli All Terrain Plus is the new version of the ATR, but I'm not sure if mercedes is putting them on the trail package yet. I don't know a lot about the Nitto Ridge Grapplers, but from what I've read they should be a lot better than the Pirellis off road. They may be noisier and a little stiffer on road though. I believe you can get the Nittos in a 285/50R20 size which is 31.2" overall diameter so they won't rub.
https://tiresize.com/wheel-offset-calculator/ this website is really helpful in figuring out the size of a tire.
https://tiresize.com/wheel-offset-calculator/ this website is really helpful in figuring out the size of a tire.