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Old 09-24-2014, 09:55 PM   #1
craigincali OP
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Air Pressure Loss

I ride my bike (KTM 990) everyday. I notice that I loose about 20 lbs of air over a 3 month period. Seems like a lot to me. The tubes and tires are brand new too. Is this something to worry about?
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Old 09-24-2014, 11:21 PM   #2
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Pressures vary with temperature so as it cools the pressure will go down...
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Old 09-25-2014, 03:00 AM   #3
Bill Harris
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And losing a pound or two a week is not unusual. Some "natural rubber" tubes do that; some synthetic rubber tubes can hold air better. On my bike, I check the tire pressure a couple times a week and top it up p'haps weekly.

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Old 09-25-2014, 09:30 AM   #4
dwoodward
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Quote:
Originally Posted by craigincali View Post
I ride my bike (KTM 990) everyday. I notice that I loose about 20 lbs of air over a 3 month period. Seems like a lot to me. The tubes and tires are brand new too. Is this something to worry about?
Only that you let it lose that much pressure before doing something about it.

My 800XC and DRZ-SM are similar; I check them if I haven't ridden in a week or so and top off as needed.
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Old 09-25-2014, 10:21 AM   #5
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Cool2

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Originally Posted by dwoodward View Post
Only that you let it lose that much pressure before doing
I know how to add....
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Old 09-25-2014, 10:28 AM   #6
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On my bikes with tubeless tires I never loose any pressure but with tubes for some reason all of mine loose air over time.


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Old 09-25-2014, 10:52 AM   #7
Bill Harris
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And losing a pound or two a week is not unusual. Some "natural rubber" tubes do that; some synthetic rubber tubes can hold air better...
Forgot to mention-- the "natural rubber" tubes are better because the rubber tends to tear less when punctured, and a sudden blowout failure is less likely. So we put up with the slight air loss for safety reasons. Out of habit, as I said, I check tire pressure a couple times a week, and especially if I'm on a highway-speed run. I'll relax a bit if my trip is a low-speed mile run into town and back.

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