[Angel And The Wolf]

I like to run my tires at 42 lbs for more mpg, but it seems my headlight bulbs can't handle the harsher ride. I replace 2 or 3 bulbs per year. I've lost low beam, high beam, and fog light bulbs.

I've had Toyota dealership check the electrical system. Nothing found. I bought new tires a few months ago, and I left the pressure where Toyota set them, no bulb problems. Guess I could raise the pressures to 42, and see if I lose bulbs.
2011 prius