36 psi year-round.

 

I have been running 45 PSI in my tires since I got the car. I am not sure if that helped the tires last longer, but I will get 34,000 out of them, and many have reported getting as low as 19,000 from the bridgestone.

 

I'm sure with the increase in pressure you will see a increase in your gas mileage. In my older cars I used to run 35 psi cold year round. If it was snowing or any ice on the roads I would drop them to about 32 psi for a slight increase in traction. I'm not sure about the hybrid. If it was icy I may drop them from 40 to 34 psi.

 

35.76386 if you want to get real techie! ROTFFLMAO

 

BTW, just for more discussion of some of this stuff, thought I'd throw in these articles I saw today:

Run Flat Tires
Nitrogen

 

Yeah this board took up the nitrogen topic a year or two ago. There were strong opinions on both sides. It's a waste of money IMO, sort of like Monster Cables. There's no true engineering justification, but somehow the marketing convinces people they're worthwhile "upgrades".

 

Agreed. The problem with air, especially here in the Northwest is its moisture content which condenses when you compress it. The result is moisture and temperature instability in your tires. A few years ago I put an old spray paint pressure bucket into my compressor air line and threw in a handfull of those chemical dryers you get in vitamins or over the counter pills. I fired up the compressor and let it bring the tank (and the paint pressure bucket) up to pressure. Then I let it stand for a while before resetting the pressure on my tires. I use it all the time now. I know it works because the chemical dryers are always wet and need to be dried out or replaced after several uses. If you do it, don't forget to purge the moist air from the air hose and pipe run from the compressor/dryer tank before you use it on your tires.