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05-23-2016, 01:04 PM
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#1
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Established Member
Join Date: Jan 2015
Location: Flushing
Posts: 19
M.O.C. #16009
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Inflation pressure for G614
I just installed a set of G614's on my 2014 3850FL. I am trying to determine the proper inflation pressure for these tires. I was wondering if anyone currently running these tires could give me some advise.
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05-23-2016, 01:12 PM
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#2
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Montana Master
Join Date: May 2005
Location: Fall Creek
Posts: 1,337
M.O.C. #3699
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I'm on my third set between two Montana's. It will say on the tire that the cold inflation pressure is 110lbs. I run mine between 100 and 110psi, never had a problem. Do you have high pressure rims? Also many people use metal valve stems on these tires too.
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Bob and Nancy Kassl Fall Creek, Wisconsin
2015 Montana 3440RL Legacy Edition, G614's, Pressure Pro TPMS, Dish Tailgaters
2016 GMC Sierra Denali 3500 CC SRW, Iridium Metallic, Duramax Allison Transmission
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05-23-2016, 02:17 PM
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#3
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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We run ours at 108# so as not to over inflate, but be basically fully inflated.
__________________
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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05-23-2016, 02:28 PM
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#4
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Montana Master
Join Date: Feb 2007
Location: Winfield
Posts: 7,327
M.O.C. #6846
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We have the exact same rig and run the 614's at 105 psi.
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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05-23-2016, 02:35 PM
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#5
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Montana Master
Join Date: Oct 2004
Location: Salem
Posts: 7,669
M.O.C. #2283
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As you increase the pressure you increase the carrying capacity of the tire. I can't think of any reason to go with much less than max pressure.
Lynwood
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05-23-2016, 02:53 PM
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#6
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Montana Master
Join Date: Mar 2005
Location: Port Orchard
Posts: 1,153
M.O.C. #3403
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When I fill ours I fill between 105 to 108 on the gauge and then check with the Pressure Pro TPMS to ensure that it reads at least 105.
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05-23-2016, 03:03 PM
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#7
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Montana Master
Join Date: Apr 2009
Location: Murrieta
Posts: 5,816
M.O.C. #9257
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Good recommendations above if you don't want to work so hard, but if you want to know for sure, get your rig weighed at each wheel, then find the inflation table for the tires and match the recommended psi for the load. You'll probably find we all tend to overinflate, but we do this because then the tire can handle more load than not and with a trailer you never want to risk being underinflated.
Since I don't use G614s, I must be more careful with my Maxxis STs. I always use 80 psi which allows fo 3460 lbs on each wheel, even though the actual weight at each wheel is only about 2700 lbs. (yup, I went to the scales to verify my configuration). But that was about 6 or 7 years ago. I really should reweigh since it's been so long.
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05-24-2016, 01:38 AM
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#8
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Established Member
Join Date: Jan 2015
Location: Flushing
Posts: 19
M.O.C. #16009
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Thanks for the info. I do have 110 psi rims and based upon the feedback from other posts I did install the hi pressure all metal stems. I checked the load range and was probably going to run around 100 to 105 which I know is more weight capacity then needed but I bought these tires for piece of mind. Again thanks for all the feedback.
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05-24-2016, 03:45 AM
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#9
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Montana Master
Join Date: Jan 2005
Location: North Ridgeville
Posts: 20,229
M.O.C. #2839
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We have always run our g614 tires on our 13 3402 big sky at 110psi.
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05-24-2016, 07:29 AM
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#10
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Montana Fan
Join Date: Mar 2015
Location: Caledonia
Posts: 347
M.O.C. #17151
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We have a 2015 310RET. Had the rig weighed, fully loaded, at each wheel. Ran the 614s at 100psi cold. Keep in mind the ambient temperature has a lot to do with the pressure. Had the tires filled when the temperature was in the high 30s. On our trip to Fl in Jan. it was -1F one morning and the tires were in the mid 80 psi when cold. Once on the road, pressure went up into the 90s. Once the warm weather arrived and we headed back pressure went to low 100s. Tires were one thing we didn't have a problem with.
__________________
John & Laura___& Bentley
2021 Holiday Rambler Vacationer 35K
Some Other Brand
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05-25-2016, 02:43 AM
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#11
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Montana Master
Join Date: Apr 2016
Location: Auburn
Posts: 879
M.O.C. #18474
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I've had G614s on my last three campers and ordered them this time on the Montana. I've always ran them at 110 psi to avoid any problems. I love these tires.
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2020 Montana 3790RD Legacy EditionOnan, TST TPMS, TrailAir pin, Discs,
2013 F350 DRW 4x4 CC LBViair 10007, Ride-Rites, Westin HDx, 12k Smittybilt
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05-25-2016, 07:31 AM
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#12
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Montana Fan
Join Date: Mar 2015
Location: SE
Posts: 478
M.O.C. #17167
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I run ours at 105 lb/psi
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05-30-2016, 03:31 AM
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#13
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Montana Master
Join Date: Aug 2009
Location: Grand Rapids
Posts: 1,898
M.O.C. #9561
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1. make sure your rims can handle 110 psi and then do 110 psi, or at least near that psi. 2. follow number 1.
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05-30-2016, 06:52 AM
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#14
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Montana Master
Join Date: Apr 2016
Location: North Lake Tahoe
Posts: 639
M.O.C. #18510
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OK, so far this is somewhat confusing. A car tire says max pressure on the side wall, and then on the door jamb, it says a much lower number is recommended. So does the G614 have a max pressure number on the side? Also, if we have the 110 PSI rims, why is everyone running their tires at 110 psi? In other words what is the max pressure for those rims? Plus, since we live at 6,800 feet, I see a 3 lb. drop in inflation pressure on car tires that I run at 36 psi, when I go to the flat lands. So how much drop will there be in a tire inflated to 110 psi? How do you get weight readings on each axle? Will those truck scales do an accurate reading with only one axle on the edge of the scale? Sorry for all of the questions at one time, but I have been thinking about this when seeing your posts, and I did just order a Montana 3820FK which will be here in a couple of months, so I want to be prepared. Thanks
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2017 3820FK Legacy Edition full body paint Montana, For Sale this November, 2018. 2016 Ram 3500 long bed Dually Cummins Turbo with air bags
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05-30-2016, 07:33 AM
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#15
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Montana Master
Join Date: Oct 2004
Location: Salem
Posts: 7,669
M.O.C. #2283
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People run tires at max pressure because that is where there is less heat build up and a tire any tire has its max carrying capacity. Basicly there is no reason to run trailer tires at any thing other than max pressure. This is cold pressure like first thing in the morning. Pressure will go up as the tire gets hot and in your case decrease as you loose elevation which is normal. Don't worry about it.
Enjoy your new camper.
Lynwood
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