Quote:
Originally Posted by SmoothHandler
Another tire inflation tip I've heard in numerous quarters is to set the cold tire pressure so that tread-to-surface contact is equalized from center to shoulder. Most folks have told me this is usually above car mfg door sticker pressure but below the max pressure on the tire.
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Theoretically, this makes sense because the tire pressure goes up slightly as the tire rolls along the pavement.... so the manufacturers reommendation would increase slightly to the ideal pressure...
Of course, the problem is the ideal pressure changes as the load on the car changes.... add another person..... fill the tank..... and the ideal changes.
However, one can experiment with placing a stripe across the tire tread using chalk then driving for a few minutes and then looking at the chalk.
If the chalk mark wears off the tire evenly, the pressure is ideal... if it wears off the center first, the tire is over inflated... wearing off near the edges means underinflation.