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10-19-2021, 02:19 PM
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#1
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Established Member
Join Date: Oct 2009
Location: Shreveport
Posts: 20
M.O.C. #9799
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Educate me on driving with an under inflated tire.
To make this short I’ll spare the details of how I got in this predicament but on a recent trip I was in a situation where 3 of my 4 tires were inflated to the recommended 110 and 1 tire was at 80. I was in a rural area so my ntent was to get to the next truck stop/tire store that could inflate my tire. I had left my compressor at home.
My question is how big of a risk is it to drive my 12K pd. 5er like that? Should I not drive it at all and call roadside service (optimal, I guess).? Is there minimal risk to drive 50-100 miles to get to a place where that tire can be properly inflated.?
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10-19-2021, 02:35 PM
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#2
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Site Team
Join Date: Sep 2017
Location: Oro Valley
Posts: 3,952
M.O.C. #20477
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Eddie,
Not sure what tires are on your rig. Sailuns can be run at 80 PSI but provide a lower weight rating at 80 PSI. You would need to determine how much weight you had on that tire and compare to the Sailun weight chart assuming you were running Sailun.
Obviously better to pump tires up if you carry a compressor.
The Sailun chart can be downloaded here. https://www.montanaowners.com/forums...?do=file&id=15
__________________
Zack and Donna plus Millie and Ranger
2018 3160RL
"Life is too short to stay indoors, enjoy the ride!"
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10-19-2021, 03:10 PM
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#3
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Montana Fan
Join Date: Dec 2020
Location: STUARTS DRAFT, VA
Posts: 140
M.O.C. #27830
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Do you have a tire pressure monitoring system? If not, I highly recommend one. Mine also shows temperature of the wheel. Increasing temperature of that wheel would give you an indication that problems were coming before anything catastrophic happened.
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John and Carrie
2021 Montana 3121RL Legacy
2020 F-250 Lariat 4X4 Short 3.55
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10-19-2021, 03:13 PM
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#4
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Montana Fan
Join Date: Jul 2019
Location: Mesa
Posts: 279
M.O.C. #24588
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Another option
Consider mounting the spare in the low tire’s place. Perhaps another RVer has a compressor. Worst case scenario is the tire is nearing it’s lifespan, is subjected to a hot road surface, over a long distance at freeway speeds. Any combination less than the sum total of those factors increases the odds you might make it to a repair shop. Quote from a Dirty Harry movie… “You have to ask yourself, you feel lucky?”
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10-19-2021, 03:36 PM
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#5
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Montana Master
Join Date: Oct 2014
Location: Hagerstown
Posts: 869
M.O.C. #16013
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Quote:
Originally Posted by firestation12
Consider mounting the spare in the low tire’s place. Perhaps another RVer has a compressor. Worst case scenario is the tire is nearing it’s lifespan, is subjected to a hot road surface, over a long distance at freeway speeds. Any combination less than the sum total of those factors increases the odds you might make it to a repair shop. Quote from a Dirty Harry movie… “You have to ask yourself, you feel lucky?”
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Put the spaRe on or take the tire off and Knock on a few doors some one will pump you up or take the tire to a service stAtion/walmart for air . Not worth the worry driving on a low tire now is it.
__________________
2018.5 3791 Rear Den Montana, on the lake no 3rd A/C, Mini Split, just do it
Electric Brakes ..... Disk Brakes, it`s the only way
F350 Ford Dually 4:10`s w/bags (payload 5595 lbs) Sumo Springs 63 gal aux tank
Reese Goosebox Mor/Ryde SRE 4000 X Factors Monroe shocks.... real smooth ride
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10-19-2021, 04:16 PM
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#6
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Established Member
Join Date: Oct 2009
Location: Shreveport
Posts: 20
M.O.C. #9799
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Quote:
Originally Posted by jjwhite368
Do you have a tire pressure monitoring system? If not, I highly recommend one. Mine also shows temperature of the wheel. Increasing temperature of that wheel would give you an indication that problems were coming before anything catastrophic happened.
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I do have a TPMS. The tire with 80 PSI was running at the same temp as the other three tires.
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10-19-2021, 04:41 PM
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#7
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Montana Master
Join Date: Mar 2016
Location: Catoosa
Posts: 780
M.O.C. #18384
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Up until recently Montana’s came with 80 lb tires, so while not ideal you were not in any danger personally or equipment wise.
__________________
2015 3100RL legacy...2005 Ford F-250 CC SB. Tows like a charm! 4/19 Updated to 2017 Chevy 3500 CC SB SRW -hope it tows as well as my F 250 did!
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10-20-2021, 08:06 AM
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#8
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Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,186
M.O.C. #6433
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I believe the Sailuns are rated over 3,000 lbs at 80 psi. So running one at 80 psi for that distance on your 12,000 lb trailer should be no problem. If it was a 16,000 lb trailer then maybe a little more questionable.
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
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10-20-2021, 11:17 AM
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#9
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Site Team
Join Date: Apr 2017
Location: Colorado Rockies
Posts: 1,928
M.O.C. #19755
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80 psi is not terribly low. It would not bother me to drive to the nearest station (at reduced speed) like that.
__________________
Scott & Alta
2017 Montana 3160RL, Legacy, Onan 5.5Kw, Solar
2022 F-450 Lariat Ultimate
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10-20-2021, 11:20 AM
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#10
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Montana Master
Join Date: Jan 2009
Location: Centerville
Posts: 1,352
M.O.C. #9051
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Quote:
Originally Posted by BB_TX
I believe the Sailuns are rated over 3,000 lbs at 80 psi. So running one at 80 psi for that distance on your 12,000 lb trailer should be no problem. If it was a 16,000 lb trailer then maybe a little more questionable.
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I agree, if he's running 235/80/16 G rated Sailuns 80 psi is 3420 lbs. If he's running 235/85/16 its 3640 lbs. at 80 psi
If they are the Goodyear G614's then I'm not so sure ,I believe they are only rated for 3640 lbs. at 110 psi . I never read anywhere on this thread what brand tire he's running ,could be a number of brands G rated . Unless I missed it somewhere .
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10-20-2021, 11:34 AM
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#11
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Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,186
M.O.C. #6433
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Just me, but for a 12,000 lb trailer I would not run any of them at max psi unless specified by the manufacturer’s load/pressure charts. There is a reason manufacturers publish those.
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
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