Low fuel levels and hot temperatures are a well-documented reason for fuel pump failures. My car manual states that the fuel level should not routinely drop below 1/4.

In 15,000km/750 engine hours I'm on my third pump in my WR, but it is used well outside its design envelope so it's just another operating cost. Keeping the tank full helps, but I'm going to try insulating the whole underside to see if that helps.

The Tenere, I suggest, in the unlikely event of it being used under the same conditions, would probably crap out pumps just as often. Fact is, a big tank, relatively plenty of fuel, and higher average speeds or shorter runs make life relatively easy on pumps. I think my WR pumps would last for ages if I rode it around at normal speeds most of the time. This doesn't happen, thus the failures.