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Originally Posted by Ara T.
I knew about the foaming issue so I fill up real slowly, but just until the fuel pump shuts off. I guess I'll fill up till I see fuel next time. As for tire pressures, I just went by my tire max pressure specs, which were above 40, though I dont remember the exact number. I found the tire pressure specs on the fuel fillup door too soft for me.
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I put the pump to the first setting and let it fill up till it shuts off. Then I play with the trigger to get more till I can see the fuel. That way it is consistant with the next time. You see, consistancy is the key here.
As to your tire pressure, I would go off what the card says and not exceed it or you might get abnormal wear on the tires. I did that before and wore out my tires prematurely. Also, when you do that, rolling resistance decreases so it might mask a problem you are having. For instance, if you are actually getting 15 mpg and you overinflate the tires, it might seem like 20 based on the readings. Threfore, you might think it is normal when it isn't. Higher Fuel consumption than normal is also one of those indicators that something is wrong. You need to get a baseline so you have a comparison. Once that is done, you can inflate it the way you want and get a reading then. If you are way off what everyone is getting for your car, something is wrong. If you overinflate your tires, you won't know if your mileage is actually right.