Author Topic: Losing Tire Pressure slowly?  (Read 1182 times)

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Offline Ram

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Losing Tire Pressure slowly?
« on: May 18, 2017, 12:51:12 pm »
Couple of weeks back when I got the 2008 Concours , the tire pressure showed 33psi. Last weekend, I refilled in between a ride stop and then the TPMS showed 42psi. Fast forward to the week day, I am checking the pressure monday morning just a mile into commute and it showed 40, tuesday 38, wednesday, 37, and today 36. Is it losing pressure too fast? I may have to check for puncture spots or like stuck nails. My front TPMS battery is low so it wouldnt show the numbers until fully warmed up.

Have to add the fact that temps in Georgia is fluctuating around 20-30F between daytime and night time
« Last Edit: May 18, 2017, 12:55:30 pm by Ram »
08 Concours 14 - Shakti
07 Boulevard C90 - Sold, 06 Katana 600 - Sold, 06 V Star 650 - Sold, 96 Royal Enfield - Gone, 95 Yezdi Roadking - Gone

Offline BlueZX10R

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Re: Losing Tire Pressure slowly?
« Reply #1 on: May 18, 2017, 01:14:49 pm »
My pressure never fluctuates that much on the TPMS.  My tires pretty consistently hold air.  I usually check them every week with a manual gauge, but I'd say at most I lose 1 psi a month.
-James
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Offline Sailor Rich

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Re: Losing Tire Pressure slowly?
« Reply #2 on: May 18, 2017, 01:30:37 pm »
A good inspection for a nail or such is in order. Liquid dish soap and water on the seating area around the rim and in a few minutes could show bubbles thus air leaking between the bead and rim. It could be leaking at the valve stem past the valve core. Replace or tighten. Dish soap and water tells the tail.
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Offline robertv

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Re: Losing Tire Pressure slowly?
« Reply #3 on: May 18, 2017, 02:57:32 pm »
Check for nails, etc, but in general with the temps like that, it is normal. Once the temps start to rise and you ride, the tires warm up and should come up again. Thats the beauty of TPMS especially when riding.
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Offline seagiant1

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Re: Losing Tire Pressure slowly?
« Reply #4 on: May 18, 2017, 03:02:20 pm »
Hi,
       Yep, valve stem? ;D
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Offline Ram

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Re: Losing Tire Pressure slowly?
« Reply #5 on: May 18, 2017, 03:36:09 pm »
Going to check the Valve stem and tires for nails once I am back home from work. The tires were replaced last year so the thread seems to be fine.

I remember having the same experience with my Sonata. I checked tire pressures and after 400 mile Washington DC trip and back in 2 days, it started to display low tire pressure sign. There was a huge nail when I had to checked at the service center.
08 Concours 14 - Shakti
07 Boulevard C90 - Sold, 06 Katana 600 - Sold, 06 V Star 650 - Sold, 96 Royal Enfield - Gone, 95 Yezdi Roadking - Gone

Offline harrykaw

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Re: Losing Tire Pressure slowly?
« Reply #6 on: May 18, 2017, 03:55:55 pm »
Make sure the valve core is seated all the way into the valve stem.  I had one losing pressure like that, and it was the core loose. :-[
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Online ConcoursKZ

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Re: Losing Tire Pressure slowly?
« Reply #7 on: May 18, 2017, 06:06:37 pm »
Fill the tire up to 55 pounds of pressure. Put a tablespoon of dish soap into a spray bottle with water. Spray the tire and find where the leak is.
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Offline MAN OF BLUES

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Re: Losing Tire Pressure slowly?
« Reply #8 on: May 18, 2017, 10:45:26 pm »
Well, when you got your tires changed, the kid changing the tires pulled the valve insert out, and tossed into the dirty tray on the tire machine, with about 50 other ones of variable age and condition... then he reinstalled whichever one his fingers touched first, aired it up, charged you for the install and you rode off.

Stop at a parts plafe, any will do, and pick up a pack of cores, and core tool.. next time you go to add air, have the new core, and tool handy, and pull the old one and screw in the new one... done deal, and it is simple.

Also, get in the habit of when you do air up a tire, spit a goober of spit on your fingernand wipe it on the end of the valve stem, so it makes a glob... you will see immediatly if its a leaker..

Soap and water spray on beads works, but seldom does a sealed bead develop a leak later in life... but I do my ownntire replacemennts, and clean my rims with a wire wheel, and wipe them with solvent to insure no debris or corrosion.

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Offline CW

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Re: Losing Tire Pressure slowly?
« Reply #9 on: May 23, 2017, 12:07:52 am »
I'm betting you have a puncture. Soapy water will help you find it. I'd for sure fix it before I rode it anywhere else.
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Offline Ram

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Re: Losing Tire Pressure slowly?
« Reply #10 on: May 23, 2017, 12:10:35 am »
Found the spot in my tire. It was a patchwork which is now leaking slowly. Need to fix it from inside. Thank you for your help!
08 Concours 14 - Shakti
07 Boulevard C90 - Sold, 06 Katana 600 - Sold, 06 V Star 650 - Sold, 96 Royal Enfield - Gone, 95 Yezdi Roadking - Gone

Offline Ram

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Re: Losing Tire Pressure slowly?
« Reply #11 on: June 05, 2017, 03:58:04 pm »
Final update - The patch was on the side so couldnt patch it any further. Replaced the tire and now everything is perfect!
08 Concours 14 - Shakti
07 Boulevard C90 - Sold, 06 Katana 600 - Sold, 06 V Star 650 - Sold, 96 Royal Enfield - Gone, 95 Yezdi Roadking - Gone

Offline alansides

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Re: Losing Tire Pressure slowly?
« Reply #12 on: June 05, 2017, 08:23:38 pm »
Make sure the valve core is seated all the way into the valve stem.  I had one losing pressure like that, and it was the core loose. :-[

I was having to air up every two weeks until I changed the cores and put on metal caps. What a difference. Going on three months without any air and have only lost one lb in the front. Still at 41 & 42lbs.

Online 4Bikes

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Re: Losing Tire Pressure slowly?
« Reply #13 on: June 05, 2017, 11:02:58 pm »
This sounds counter intuitive, but I swear when I ride regularly I lose no air pressure for weeks, but if the bike sits a week or two, I'm down a few PSI.
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Offline TimR

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Re: Losing Tire Pressure slowly?
« Reply #14 on: June 08, 2017, 06:07:15 pm »
The first set of PR 2's I put on the C14 leaked air. I never aired motorcycle tires so much in my life.  >:(  There were no holes, valve stem didn't leak . I believe I was loosing air between the tire bead and the rim. I squirted a lot of soapy water only to find nothing.

Subsequent tires have not had this problem and I and amazed when the tire pressures are still good after sitting for awhile.   
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Offline Jorge

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Re: Losing Tire Pressure slowly?
« Reply #15 on: June 09, 2017, 12:29:47 am »
Glad you found it Ram... that is definitely the way to find a damaged tire. At home, with the ability to get it replaced conveniently (if it can ever be convenient!).

Offline Ram

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Re: Losing Tire Pressure slowly?
« Reply #16 on: June 09, 2017, 12:58:02 pm »
Now I can ride and turn without fear of the tire popping out on me at the wrong time.
08 Concours 14 - Shakti
07 Boulevard C90 - Sold, 06 Katana 600 - Sold, 06 V Star 650 - Sold, 96 Royal Enfield - Gone, 95 Yezdi Roadking - Gone