Turning onto 15 degree sideroad - Can it be done ?

If you approach the turn from an angle to the corner you can get a little more clearance.

If I did the math correctly, which I could have done wrong, it looks like that for the coach with a 222" wheelbase to sit at a 15 degree tilt, the front wheels would have to be almost 60" off of the ground. Don't think it is going to happen without the rear overhang dragging.
It might work if you could back it up but that would depend on exactly how long the overhang is and how low the trailer hitch sits. I still doubt if it is going to happen. Sorry

Well it's been many decades since I had geometry, but IIRC, at a fifteen degree slope, your 10 foot rear overhang is going to be on the ground within about 5 feet of the rear wheels starting up the slope. The front won't make it either.

Of course, you could take the unit you are thinking of buying for a test drive and cautiously try and take it up your drive way. You'd want to have a representative load on board.

Hi Ductape. Thanks for the quick reply.

The situation is that the main road we live off of is a main route, and is nice and flat (i.e. flat as in when a level is set on it). Our road we live on intersects it at 90 degrees, and is going upward at 15 degrees, i.e. it's also nice and flat, but our entire road (about 600') intersects the main road at 15 degrees. I'm sorry in advance if I'm missing the meaning of your slope question.

There isn't any time of transition between the main road and our road, it just starts right in at 15 degrees. It's not a mapped road, anything the town takes care off, so I don't think it would pass standards if it were built today ( built in the late '30s.. )

Side road rises or falls?

And do you really mean 15 degrees or 15 % slope?