Shortly after moving up here in the 60's, I was talking to a tire salesman. He said that they service several traveling salesmen's company cars. He'd had to answer letters from three different flatland home offices, explaining that tires most emphatically did not last as long here in the mountains because of all the curves and hills.
My own personal record is averaging about 15,000 miles per set of tires on my '83 Rabbit GTI. I lived about 15 miles out of town, the last 10 being on a twisty, hilly two lane. I usually made two trips to town every day, and didn't like to spend any more time on the road than necessary.
My advice? Learn to live with it, or slow down ;).
Jim, "Crowded elevators smell different to midgets."