Welcome and thanks for your Post! What is a Nito 2? Any pictures? Here in the US we really don't consider a Nitro 4X4 an off-road vehicle for the same reason you note. However a 4X4 Nitro here are great to drive in the snow, but not sand.
Let us know more about your vehicle and how you came to buy it and have it serviced. Enjoy and Good Luck with the sand!
Nitro Year: 2007 (1 of 91,815 sold in 07)
Nitro Model: R/T 4X4 Stone White
CAT-BACK Exhaust, CAI, Projector Head Lamps
Fully-Equipped w/all factory options