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" Pressure washers used to be a high-ticket item, so they weren&amp;#039;t that common. Now they can be had for no more money than the tab for a pretty good Saturday night&amp;#039;s partying. I&amp;#039;ve got a couple, actually (pressure washers, not bar tabs). Clean freaks beware! Car and tire manufacturers recommend against using pressure washers to clean the sidewalls of car or truck tires. It&amp;#039;s not the high pressure that&amp;#039;s really the problem -- it&amp;#039;s the high-frequency pulsations caused by the style of pump used. The several-hundred-hertz fluctuation from near-zero pressure to 1500 psi or more can damage the sidewall cords in your tires. So if you insist on using your pressure washer to clean your wheels and tires, be careful not to get too close, especially if the nozzle of the pressure washer is set to a narrow angle. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.popularmechanics.com/cars/how-to/a1705/4217528/>