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Old 05-05-06, 10:50 AM   #1
ultimatio
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Weird PSI thing.

Just getting back into riding my bike, I'm just a casual rider but I'm rocking 20x2.0 tires and the tires say to inflate to 45-60 PSI...however no matter how long I inflate, the gauge seems to indicate that they are sitting comfortably at 25 PSI. these are brand new tubes, and I know for a fact that my gauge isn't broken. What gives????
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Old 05-05-06, 10:53 AM   #2
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Could be the pump. You cant take a bike pump and pump up a tube to 5,000 PSI could ya? So...it's not too much to say that some pumps cant get to say...25psi, in which case it's either cheap or broken.
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Old 05-05-06, 10:54 AM   #3
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Well, it's an air compressor which i have used to inflate car tires....but come to think of it it has been kind of lax in the car department too lately. hmm...
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Old 05-05-06, 10:58 AM   #4
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If it is indeed a new pump I need, could anyone recommend an affordable pump of quality?
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Old 05-05-06, 11:21 AM   #5
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Quote:
Originally Posted by ultimatio
If it is indeed a new pump I need, could anyone recommend an affordable pump of quality?

At a minimum you will need a handheld pump which you can take with you on rides. Puncturing a tire is inevitable and if you don't already have an emergency pump, a simple flat will leave you stranded far away from home. Go to your local bike shop and purchase a patch kit and a pump. Have a salesperson show you how to use it.

Second recommendation is a good floor pump. Not necessary but very beneficial. The guages are usually accurate and will inflate tires well above 100+ psi if necessary.

Lastly, I don't recommend using an aircompressor to inflate bicycle tires.

I use a Serfas brand floor pump but there are other good quality floor pumps from Blackburn, Specialized, Silca, Topeak, etc.
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Old 05-05-06, 12:18 PM   #6
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you sure you don't have the regulator on the air compressor screwed down so that it won't put out more than 25 psi?
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Old 05-05-06, 05:22 PM   #7
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Something in the system is unable to maintain more than 25 psi. I would take Landgolier's suggestion, and check the regulator first.
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