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Tire pressure question

  #1  
Old 04-07-2012, 03:48 PM
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Default Tire pressure question

so I know the top tire pressure for the bike is:
front 36 psi
rear 42 psi I think, close to that number.

I put my tire pressure to this pressure about a month ago and today I checked the pressure and it was:
front 32
rear 38

This month I did not ride it too much, probably every other 4 days

But does your tire pressure go down that fast? Also around what pressure should I refill the tires back up?

last month when I refilled it with air I used the automatic gauge on the gas station air filler to put the pressure to the top specs, when I check it I use a walmart $2 slime magnet air pressure gauge, could that be what causes the discrepancy? as of right now riding with the pressure like this is perfect and no problems so far
 
  #2  
Old 04-07-2012, 04:00 PM
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Both guages are inaccurate. Temperature can make a difference as well. Warmer temps raise the pressure.
 
  #3  
Old 04-07-2012, 04:02 PM
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when you say both gauges are inaccurate, do you mean they both are inaccurate of a proper gauge, or that they both will give different answers, and tire pressure was relatively the same, not that I exactly would know but the amount of riding done before the pressure was taken was the same
 
  #4  
Old 04-07-2012, 04:05 PM
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I wouldnt trust either guage. The gas station ones are beat up and run over every day, the $2 ones are...$2 ones. Spend a few bucks on a good one, its well worth it.
 
  #5  
Old 04-07-2012, 07:18 PM
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Your tire pressure can change a decent amount w/ temperature. I bought an accutire digital gauge for my bike for like $12, it's also good to have an old school gauge where the air pressure pushes the stick out just to verify the digital one every now and then.
 
  #6  
Old 04-07-2012, 07:25 PM
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Yuppers, $10 well spent, never go cheap on any tool, unless it's the only one available and you really need it.

Always check temp with the tires cold.

Unless you have a specific, knowledgeable reason, inflate to the max pressure posted
on the bike frame. Worst case scenerio following that advice...is a slightly stiff ride,
if you are a light rider.

If you are experiencing low tires, after less than a month or longer, try soaping the
tire and bead. It's cheap and should be the first try at fixing the problem.
Look for soap-bubbles, indicating a leak.

Just put a good squirt of dish-soap in 8oz of water. Use an old spray bottle and you're good to go.

If that doesn't work, change the valve-stem inserts. They can go bad and leak.

That should get you an answer/fix, if not be sure and check back and let us know.

Ern
 
  #7  
Old 04-08-2012, 10:18 PM
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sometimes the people mounting your tires dont change the stems, which may cause your leak air more than usual.
 
  #8  
Old 04-08-2012, 10:24 PM
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yeah probably just going to invest in a better gauge and then form there check the stem and tire by doing what madhattr said, digital or manual, any brands or things in particular I should look for?
 
  #9  
Old 07-26-2012, 07:51 PM
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Do you guys really run the max psi? (36f/42r)
 
  #10  
Old 07-27-2012, 05:33 AM
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Yes I do and haven't ever had any problems.
 

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