Wiper blades or air filter?
 

I was wondering: Which do you change more often in your cars, the wiper blades or the air filter? This is not limited to just your Boxster.

To answer my own survey: Wiper blades, twice a year.
I'm in Ohio, we have more rain than dust.

I replace wiper blades every spring.

I replace air filters every 30K. 15K when I was living in the desert.

Wiper blades, hands down - 2 or 3 to one.

Looks like I'm in the minority here. Since I never drive in the rain, I only change my wiper blades every two years. The engine and cabin get new air filters every year.

Wiper blades - once per year
Air Filter - twice per year