Tire pressure (17 inch rims) - GreenHybrid - Hybrid Cars


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Old 04-22-2006, 11:55 PM
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Default Tire pressure (17 inch rims)

Hi all. What pressure should I set my tires to if I have put on 17 inch rims and different tires than the car came with? The Honda dealership suggested inflating them a little higher than the usual pressures.

thanks,

- Frank
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Old 04-23-2006, 09:23 AM
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Default Re: Tire pressure (17 inch rims)

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Originally Posted by ftlum
Hi all. What pressure should I set my tires to if I have put on 17 inch rims and different tires than the car came with? The Honda dealership suggested inflating them a little higher than the usual pressures.

thanks,

- Frank
A lower-profile tire will tend to deform from a round shape more than a higher-profile tire with the same load since there is less material on the tire to flex, so higher pressure is probably a good idea in general for lower-profile tires. I'm running 205/50/16" tires (you're probably running 205/45/17") rated for 44psi max, and I'm actually running them right at 44psi -- that's a bit on the high side, but I find it provides crisper handling, and noticably improved fuel economy. The main drawback with higher pressure (and the reason why most cars don't come wtih higher pressure stock) is more road noise and a bit stiffer ride. I would suggest running the pressure as high as you feel the ride is comfortable at, or up to the indicated pressure on the sidewall of the tire.

Also, remember that reccomended tire pressure ratings are for cold tires, so fill up sometime when they haven't been driven on for a few hours.
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Old 04-23-2006, 11:23 AM
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Default Re: Tire pressure (17 inch rims)

Don't even worry about exceeding the max sidewall. They are safe many times higher than the rating. Over at http://www.cleanmpg.com there was an article in one of our forums that shows how some police training vehicles exceed the max PSI and the reason they don't exceed it on the street is for liability reasons and not safety reasons.

http://www.cleanmpg.com/forums/showp...7&postcount=13
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