Think about the service rigs for the logging operation. I have put many an RV just about anywhere there is a spur road. The turning around can be a problem but there is always a landing somewhere. Look at Elk season and the rigs you see in the woods. I would not drive blind into a new spur but if I had been there before no problem. As to traction the 450 has a good amount of weight on the drivers and can get most places. If your talking rutted out single tracks then you better get a BIG 4x4 built RV like the Unimog(SP) built on a big unit with winch's and you need a ladder to get in the house area. From OLY and know a lot of the area you might be camping in.
LEN