This may well be a thoroughly dim question and I reckon the answer probably lies somewhere back in the recesses of my maths memory ... When we buy our motorhome, it will be stored at my dad's - how can I figure out whether I can get a MH onto his drive without grounding the rear end.... In order to park there, I need to drive down a steep hill, wide enough for two cars to pass but no more, then make a steep and fairly sharp uphill left turn onto his lane. Is there any way of working it out what the maximum rear overhang could be? I know twenty-odd years ago he used to take the caravan on there with the aid of a couple of planks of wood to level out the angles but I'd prefer not to have to resort to that after every trip out ...!