So I never thought about checking my tire pressure since I bought my car, since all tires looked "fine." I checked it randomly at a gas station yesterday, and whaddaya know! It was at like 45PSI. Could this have affected gas mileage at all? I know it probably wore my tires in the middle moreso than usual, but any other problems that could have stemmed from this? The car feels less rough now, even with the new drop. I have it at ~32 now, front and rear. Thanks.

 

Yeah...I used to run 41psi all the time and my tires were ROCKS! I could hear/feel every little pebble/crack that I ran over.

Now I try and keep them around 34-35psi, which seems to work perfect with my RSB.

 

higher tire pressure = better gas mileage

 

Hmm.. I think I need to get an electronic tire pressure gauge to keep the PSI where I want it, exactly.

Higher pressure really equals better gas mileage? When do diminishing returns kick in? What's the best pressure compromise for comfort vs. gas mileage?

 

Excessive tire pressure ALSO is dangerous.

Not just from the risk of potential failure, but the way it effects the handling of the car.

Check the link in my SIG for more then you EVER cared to know.

My advice is to STICK with what the manufacturer recommends, since they've done INSANE amounts of testing to figure what's safe. Once you get aftermarket tires/rims, you're kind of in the dark though.

 

Excessive tire pressure will also wear the center tread of your tires faster that the outer treads. Of course, w/ the stock potenzas, does it really matter?

 

Make sure that you check you tire presure when the tire is cold. Because if you checked your tire after driving awhile it might be +5psi off

 

Don't Fill your tire to the Maximum psi, air expands when it gets hot.

 

that's true...and usually in the winter time...try to keep it alittle higher than normal since air will likely to contract during cold weather....

 

IceY2K1 has the best response.
Overinflating for better gas mileage is not something I'd recommend.

 

always check tire pressure cold. That also means in the winter you need to up your pressure in cold weather and let out air in the spring if you live in a climate where you have big temp changes. I run 34 year round in the car and truck.

 

i like 34 also...keeps a good comfortable ride...and maintains decent gas mileage