if you want better gas mileage and a little better handling i would air them up to 35....
i run a little higher b/c i randomly do some twisties and i air mine up daily close to my autox pressures....
daily: 41 front, 36 rear
autox: 42 front, 35-39 rear
but i wouldnt do that with your stock tires.....
its a lot rougher ride.