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10-22-2015, 01:54 PM
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#1
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Montana Fan
Join Date: Mar 2004
Location: Bristol
Posts: 396
M.O.C. #1269
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Tire Mystery!
OK, here's the story. When I had my Goodyear Marathons on my RV I noticed a strange thing happening; the front right (passenger) tire would deflate from 80 psi about 40 or 50 psi when it sat for an extended period of time in my driveway. By extended period of time, I mean just a couple of months.
At one point, I had the tire removed and checked by a service facility and they could find no problem. The tire functioned well ('well' being a relative term, since it was a Marathon tire) other then for that anomaly. We also noticed that when we drove to Florida it did not seem to lose pressure like it did at home.
Now that I have upgraded to the G series tires, I figured that problem probably would disappear. But the same positioned tire is doing the same thing, this time going from 110 psi to about 80 psi.
Do any of you tire wizards have an answer for this? For the record, my RV sits in a driveway that is tilted at a slight downward decline. None of the other tires seem to lose pressure in any significant way.
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10-22-2015, 02:01 PM
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#2
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Montana Master
Join Date: Feb 2003
Location: Englewood
Posts: 3,095
M.O.C. #164
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Is the subject tire mounted on the same wheel that the other problem tire was??
If so I would suspect that wheel!
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10-22-2015, 02:06 PM
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#3
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Montana Master
Join Date: Feb 2007
Location: Winfield
Posts: 7,327
M.O.C. #6846
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Spray the rim with soap and see if it bubbles anywhere. Sounds like a faulty rim.
Bingo
__________________
Bingo and Cathy - Our adventures begin in the hills of WV. We are blessed by our 2014 3850FL Big Sky (previous 2011 3750FL and 2007 3400RL) that we pull with a 2007 Chevy Silverado Classic DRW CC dually.
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10-22-2015, 02:11 PM
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#4
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Montana Master
Join Date: Aug 2008
Location: New Bern
Posts: 4,370
M.O.C. #8728
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Or loose valve stem.
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10-22-2015, 02:54 PM
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#5
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Montana Master
Join Date: Dec 2009
Location: Sebring
Posts: 3,657
M.O.C. #9969
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We actually had a rim on our new SOB that had a tiny pin hole. Tire shop had to pump up to 150 Lbs (125 PSI tire) and dunk the assembly to fine the pin hole. New wheel solved the problem.
__________________
Michelle & Ann
2018 Chevy 3500HD High Country DRW 4X4 Crew Cab w/Duramax/Allison, Formally 2010 Montana 2955RL, Now Loaded 2016 SOB, Mor/ryde IS, Disc Brakes & Pin Box, Comfort Ride Hitch, Sailun 17.5 Tires.
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10-22-2015, 03:06 PM
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#6
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Montana Fan
Join Date: Jun 2011
Location: stockton
Posts: 405
M.O.C. #11457
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I had a similar problem with a very slow leak. Finally discovered small crack in rim, replaced under warranty, no more leak. Commercial truck tire company finally discovered the leak by submerging whole tire at 110 psi , very few bubbles so not easy to see at first.
__________________
2014 Montana Mountaineer 331 RLT. Winneguard SWM Traveler Satellite Antenna, Progressive 50 amp portable EMS, 6 point Level Up.. 2016 Chevy 3500 Duramax Dually, long bed, B&W Patriot hitch.
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10-23-2015, 01:12 AM
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#7
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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That would be my guess also. If the new tire is mounted on the same rim, there has to be a tiny defect.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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10-23-2015, 01:55 PM
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#8
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Montana Master
Join Date: Jan 2005
Location: North Ridgeville
Posts: 20,229
M.O.C. #2839
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Probable bad rim or bad valve stem.
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11-25-2015, 03:19 AM
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#9
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Montana Fan
Join Date: Mar 2004
Location: Bristol
Posts: 396
M.O.C. #1269
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So, I had originally reported this defect to my RV seller when I bought the rig about two years ago and Marathon tires were on it. Since I have put the G614 tires on it and discovered the leak still exists, I brought it back to my dealer. They state they cannot find any leak and they will not replace the rim. When I explained to them they had only had the rig for five days, they stated I would have to leave it longer. I'm willing to do that andI told them and then they said they didn't want it sitting on their lot for two months.
Catch 22 I guess, they don't want to leave it on their lot and I'm letting them know that it will take two months or so for the 20 or 30 pounds to dissipate. I am not happy with them and we are in the process of discussing it.
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11-25-2015, 04:00 AM
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#10
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Montana Master
Join Date: Feb 2012
Location: Lake Gaston
Posts: 8,773
M.O.C. #12156
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Agree, rim or valve although I would have thought new valve stems with the new tires.
__________________
Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
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11-25-2015, 04:16 AM
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#11
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Montana Master
Join Date: Mar 2013
Location: Frostproof, FL USA
Posts: 2,362
M.O.C. #13272
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I would also suspect stem or rim. But based on the fact that it did not drop air pulling to Florida makes me wonder. You would think that if the rim had a defect or pin hole it would have to drop air while towing because the pressure builds when rolling down the road. If it was a bad stem I would think the same thing, it would be more pronounced while towing.
Are you sure some kid or neighbor isn't jacking with you while it is parked at home?
__________________
Previous: 2008 Montana 3400RL & 2014 3725RL
Current: Full Time 2022 SOB TT Toy Hauler
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11-25-2015, 04:23 AM
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#12
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Montana Master
Join Date: Sep 2013
Location: Pensacola (mail forward service)
Posts: 3,198
M.O.C. #13740
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Just take that wheel/tire to a competent tire dealer that has the equipment to find the issue. Find out where the wheel was sourced from and present your case to them. If the won't replace it with evidence from a tire dealer and your case facts, then buy a new wheel and live happy. Certainly not worth dragging the Montana to the dealer, not worth extra stress in the life, not worth the time stolen from more important things in life. John
__________________
2012 F350 6.7 L dually, 2013 3800RE with 6 pt leveling, Sumitomo 17.5" load range h tires, Samsung 18 cu ft residential fridge, 8k Morryde I.S. with disc brakes. Full timing since 2012.
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11-25-2015, 06:23 AM
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#13
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Montana Master
Join Date: Dec 2009
Location: Sebring
Posts: 3,657
M.O.C. #9969
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Some times those type of problems require exceeding the normal tire pressure, such as putting 150 Lbs in it and dunking into a tank of water. We went through a similar issue with our newest SOB in April. Found a very very small pin hole in the wheel casting.
__________________
Michelle & Ann
2018 Chevy 3500HD High Country DRW 4X4 Crew Cab w/Duramax/Allison, Formally 2010 Montana 2955RL, Now Loaded 2016 SOB, Mor/ryde IS, Disc Brakes & Pin Box, Comfort Ride Hitch, Sailun 17.5 Tires.
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11-25-2015, 06:55 AM
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#14
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Montana Master
Join Date: Oct 2004
Location: Salem
Posts: 7,547
M.O.C. #2283
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Believe it or not air can escape through solid steel. If you cut a piece off of a round steel bar and wield it in a piece of pipe it will leak. At one time I did a lot of work for the electron tube industry. They build these tubes and pull a near perfect vacuums on them. A fingerprint will take several days to draw off. If the steel isn't cut right the tube will never hold a vacuum. It may take several days to a month but it will go to air and a $50,000 tube is scrap.
Lynwood
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12-03-2015, 02:25 PM
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#15
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Montana Master
Join Date: Aug 2004
Location: Livermore
Posts: 5,142
M.O.C. #1920
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Tredit is the source for Montana's wheels. I would first have a good tire shop determine if it's wheel or valve stem. If it's the wheel, contact Tredit or Team Montana.
__________________
Ron and Terrie Ames - MOC #1920/KF0NTA
2021Montana 3230CK Super Solar Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
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12-04-2015, 02:39 AM
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#16
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Montana Master
Join Date: Aug 2006
Location: merced
Posts: 983
M.O.C. #6171
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Try the easiest thing first. Changing the Valve stem is easy. All thing the same, at then it must be that which is left, the rim.
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12-07-2015, 06:08 AM
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#17
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Seasoned Camper
Join Date: Nov 2013
Location: rockaway
Posts: 63
M.O.C. #13901
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hello,
had the same problem with my 2008 Everest, it was a crack in the wheel on the inside middle. out of warrenty from keystone , but a few phone calls and the right person and I got a new wheel . they sent it to my dealer and it was all taken care of with no charge. good luck, and happy holidays
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12-09-2015, 04:59 AM
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#18
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Montana Master
Join Date: Dec 2010
Location: Sioux Falls
Posts: 664
M.O.C. #10985
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I have had the same problem on a auto. It would only leak when parked for some days. If used daily it would not leak even 1 oz. If I were you I would dismount the tire and clean the sealing surface with a wire brush Both tire and wheel. But you could have it completely submerged in a tank to look for bubbles. I am assuming this is the same wheel not just the same position with the Marathons and the G614's.
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12-27-2015, 03:56 PM
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#19
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Established Member
Join Date: Jun 2013
Location: Denton
Posts: 39
M.O.C. #13493
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Question for all of you. When changing from E to G tires, and the additional pressure the G's can rate, what is the maximum pressure the stock Montana aluminum wheels can take, up to 110, less or more?
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12-28-2015, 04:38 AM
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#20
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Montana Master
Join Date: Dec 2007
Location: Kansas City, Missouri
Posts: 2,707
M.O.C. #7992
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Maximum psi should be stamped on the back of the wheel. I believe all the later model Montana's came with 110 psi rated wheels.
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2006 3000RK
2009 Ram 2500
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