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Tire air loss
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Posted by:
Joe Rovito

Friday, October 23, 2009
09:42 am
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If you don't ride your bike for a couple of weeks and then check your tire pressure before you ride, how much air do you usually have to add to get it back up to your normal air pressure, if any at all?


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Posted by:
Wayne Stewart

Friday, October 23, 2009
09:43 am
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1/2 to 1 lb.
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Posted by:
Newton Enloe

Friday, October 23, 2009
10:38 am
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I used to think about 1-2 lbs a week, at least.

Since I switched to metal stems, the majority of air loss is from checking air pressure.

Also....I clean the bead seating surfaces every tire change...seems to make a big difference.

In otherwords...I don't have a noticable air loss after 2-3 weeks, and if I do, I usually start looking for a problems.
Tim
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Posted by:
Albert Schuman

Friday, October 23, 2009
11:03 am
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Like Newton said, the rims are a must clean item and check the valve core to make sure it`s snug. Al
Posted by:
Raymond Sykes

Friday, October 23, 2009
11:08 am
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I loose about 1# a month, more if I keep on checking it all the time.
Posted by:
John Owens

Friday, October 23, 2009
01:37 pm
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In the fall you need to watch pressures more carefully than other times of the year. As the air temp cools, the tire pressures are reduced, even though you haven't lost any air, the exact opposite happens in the spring as air temps rise, your tire pressure will increase a bit, noticeable by the tire pressure remaining constant longer.
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Posted by:
Charles Dunagin

Friday, October 23, 2009
03:50 pm
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What John said. A good tire will not lose air. The pressure changes with temperature differences.
Charlie D. in SC. on red SE

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Posted by:
Joe Rovito

Friday, October 23, 2009
04:08 pm
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Mine was parked for about 2 weeks and I lost about 5 lbs. no nails of anything in the rear tire, I don't think I have ever lost that much air from a tire before. Had me wondering, The tires have about 5,000 miles on then so I don't think it has to do with mounting. I guess I'll have to keep a close watch on them, Thanks for the replies


JoeinCalif!
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My 08 Wing
First Baptist Church of San Jacinto


The Good Life San Jacinto Calif!

"If you are born once you will die twice.
If you are born twice, you will die once


Posted by:
Michael Stone

Friday, October 23, 2009
05:02 pm
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Try spraying a soap/water mix on your tire and especially around the rim and valve stem? Maybe you have a slight leak.
Posted by:
Kenneth Losser

Friday, October 23, 2009
09:50 pm
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Joe, 5 lbs is not normal. Don't lose more than 2 pounds during the 7 month riding season. I always check the air pressure in a 70 degree heated garage so no temp change which results in no temperature caused pressure difference. Next tire change or any bigger pressure drop, would change valves over to metal and have the tire remounted (including cleaning inside rim).
Posted by:
Bob Kekeis

Saturday, October 24, 2009
06:34 am
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Dunlops seemed to lose more pressure than other brands for me.
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Posted by:
Gary Hickman

Saturday, October 24, 2009
08:11 am
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The tire industry considers normal tire pressure loss in automotive tires to be 1# per month. For every 10° change in temperature, it also changes 1#. So if your tires are mounted in the spring, as they loose the 1# / month they gain the 1# / degree. Then when things cool off in the fall/winter, suddenly your tires are way low! Again, this is in AUTOMOBILE sized tires. But then again, some bike tires are the same size.

Having laid the "industry standards" on the table, in reality my car tires fluctuate by the temps, and don't seem to loose the "normal" 1# / month.

My BIKE tires stay the same pretty much year round. The pressure I loose is from checking them.

The only problem I have had with the two sets of Dunlops was the first set, due to corrosion on the rims from some dumb- putting tire sealant goop in them before I had it. Once I got that cleaned up and the rims shined, no more problems.
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Posted by:
Joseph Becker

Saturday, October 24, 2009
06:16 pm
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Both my 1800's lose about 2-3 pounds in 3weeks on the front tire. Never had an issue with the rear until recently,now that;s losing a little. Getting new tires with metal stems soon, we'll see how that goes.
Posted by:
David McAfee

Saturday, October 24, 2009
07:19 pm
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New rubber will bleed off. Also, see what Charles Dunagin says !!!
Got a good, digital gauge ?
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