Hi all- newbie here; current ride is '06 kingcab 4x4 w/ 265-70-16 BFG oems that probably need replacing. (I bought this truck used and I don't think the previous owner ever rotated his tires- currently has 27,000 miles) I like the current smooth, noiseless ride, but I want to build a slide-in truck camper (800 lbs. max- which is why I'm building one instead of buying one) and know I need a stiffer sidewall tire for travelling with that much weight- Can I get a tire that affords me good gas mileage on the hwy while still handling well on dirt roads, field grass and in some snow (without the camper)? I live in Vermont and need to negotiate the winter before I leave in Feb. to travel the country for 6 weeks (mostly highway miles). Your help is appreciated-