Normal Air Pressure Loss ? - Suzuki Burgman Forum
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Old 08-25-2010, 04:23 PM   #1 (permalink)
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Default Normal Air Pressure Loss ?

How much tire air pressure loss would be considered normal ? I checked mine when I got it. Front had 33 and back had 41 - just as specified. Month later both were down about 4 lbs., so I put air in them to restore those numbers. In the last week, both have lost a couple more lbs. I guess if people are checking these tires every time they ride, then I should expect this is normal; otherwise, they wouldn't check it so often. But I need to hear you say it. Dealer told me when I bought it to check it once a week or so.
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Old 08-25-2010, 05:31 PM   #2 (permalink)
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Default Re: Normal Air Pressure Loss ?

Yes, check your tire pressures at LEAST once a week.
What you report is about what I see with my tires as well, and the tires are < a year old.... So I just check 'em and add air as necessary.
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Old 08-25-2010, 06:30 PM   #3 (permalink)
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Default Re: Normal Air Pressure Loss ?

Motorcycle tires don't hold a very large volume of air compared to a car tire so they don't have to loose much air to drop the preasure down a few lbs. Just the litte bit of air you loose when you put the gauge on can drop them a lb or so.
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Old 08-25-2010, 06:52 PM   #4 (permalink)
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Default Re: Normal Air Pressure Loss ?

The dealer was correct - you should check all tires once a week, especially motorcycle and in our case, scooter tires. Outside air temperature makes a difference too. So as the seasons change, be sure to check tire-pressures frequently.
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Old 08-25-2010, 06:53 PM   #5 (permalink)
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Default Re: Normal Air Pressure Loss ?

My scoot loses about 3 pounds of air a month. I even have a plug in the front tire and it doesn't lose anymore air than it did when it was new.
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Old 08-25-2010, 07:20 PM   #6 (permalink)
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Default Re: Normal Air Pressure Loss ?

You might put some saliva on the valve stem opening to see if you have a slow leak there.

I find it interesting that my tires will lose air if I'm not riding...but hold air just fine if I'm riding each day.

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Old 08-25-2010, 08:23 PM   #7 (permalink)
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Default Re: Normal Air Pressure Loss ?

Quote:
Originally Posted by Daboo
I find it interesting that my tires will lose air if I'm not riding...but hold air just fine if I'm riding each day.

Chris
Maybe that's my problem ? I screwed my right knee up good and haven't been riding much at all for about 3 weeks now. If I had to hold any weight up with my right leg/knee, I would be in trouble. Looks like a rebuild is sure to come.
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Old 08-25-2010, 10:20 PM   #8 (permalink)
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Default Re: Normal Air Pressure Loss ?

I find I can go several weeks with only minimal loss of air pressure, maybe 1-3 PSI. It's possible that your valve cores are not tightened fully. Metal valve caps with a tool on the end that fits the valve core are available cheaply at auto parts stores and are recommended over the plastic ones due to superior strength.

When I replace a tire I use a NEW valve core just to minimize the possibility of leakage -- seems to help a bit.

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Old 08-25-2010, 11:26 PM   #9 (permalink)
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Default Re: Normal Air Pressure Loss ?

Every time you check tire pressure with a barrel type gauge that pushes out a stick with numbers in it you lose the amount of air in the barrel gauge so I bought a digital gauge. New tires were mounted on July 18 and as of yesterday -1psi in the front and -2 in the rear. Not bad.
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Old 08-26-2010, 11:18 AM   #10 (permalink)
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Default Re: Normal Air Pressure Loss ?

The amount of air that pushes the piston in a barrel gauge is negligible. What does matter is properly seating the gauge each time you press it down on the valve stem so as not to lose excess pressure.
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