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06-24-2014, 09:46 AM
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#1
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Senior Member
Join Date: Jul 2013
Posts: 103
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Trailer Tire Pressure while towing..
I have heard 2 sides to tire inflation. I want to pull safely but also try to control the amount of bouncing etc. How have some of you handled your trailer tire inflation while pulling on long trips???
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06-24-2014, 09:56 AM
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#2
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Senior Member
Join Date: Sep 2009
Posts: 1,536
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Check your tire pressures before you start the day's traveling. If needed, air them to the pressures found on the tire placard/certification label/vehicle owner's manual.
IMO fooling around with RV trailer tire air pressures is a sure way to early tire failures.
FastEagle
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06-24-2014, 11:52 AM
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#3
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Senior Member
Join Date: Feb 2014
Posts: 105
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At the beginning of a tow, I inflate to the max pressure on the tire sidewall, 65 psi in the case of load range D tires. The pressure will obviously increase as you tow, but the tires are designed to take that into account. IMO, you're always better off having too much rather than too little pressure.
You mention '2 sides' to tire inflation. What were you referring to?
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06-24-2014, 12:00 PM
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#4
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Senior Member
Join Date: Jul 2013
Posts: 103
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The other side was balancing the tire pressure so the trailer rides softer but I cannot see a lot of benefit to that.
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06-24-2014, 12:35 PM
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#5
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Senior Member
Join Date: Oct 2012
Posts: 825
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If you give Gross vehicle weight rating ( GVWR) of trailer and fo tires the maximum load and needed pressure for that and speedcode or if they are ST tires ( Special trailer) ( can all be found on sidewall) , then I will calculate a save pressure with my made spreadsheet. It uses even a saver formula then the European tire makers use and takes a reserve first for things like , pressure loss in time, unequall loading R/L and misreadings of pressure-scale. And still no bumping. For ST tires bumping border is different because this is related to the deflection of the tire, and ST are calculated in their maximum load for more deflection allowed.
Best is always to weigh per wheel( pair) but as long as you did not do that we will have to do with what we got.
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06-24-2014, 04:14 PM
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#6
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Senior Member
Join Date: Feb 2009
Location: Ca
Posts: 1,076
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Air your tires to max sidewall to carry weight and run cooler. Low pressure builds heat and heat kills tires.
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06-25-2014, 07:56 AM
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#7
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Senior Member
Join Date: Jul 2013
Posts: 103
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Quote:
Originally Posted by timetogo
Air your tires to max sidewall to carry weight and run cooler. Low pressure builds heat and heat kills tires.
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Makes good sense, heat is definitely a destroyer of tires.
thanks for the info...
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06-26-2014, 03:58 AM
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#8
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Senior Member
Join Date: May 2012
Posts: 2,947
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Max side wall pressure is 55 for my tires. I have tire pyrometer and measured after several trips and found my pressures overall on any given trip with the loaded trailer to be best at 52. Check your tread pattern also. Good indicator. Some folks run them under inflated, not too good.
__________________
Perry & Julie: 2008 Monaco Camelot 40PDQ, 400ISL, Toad; 2015 Chevy Equinox.
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06-27-2014, 07:09 AM
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#9
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Senior Member
Join Date: Jul 2013
Posts: 103
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Appreciate all the advice. irv2 is certainly a great knowledge base.
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08-27-2014, 07:15 PM
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#10
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Senior Member
Join Date: May 2014
Posts: 1,368
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That's some of the best tire inflation advice I've seen in a long time, low pressure low life expectancy. (love this forum)....
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08-27-2014, 09:57 PM
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#11
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Registered User
Outdoors RV Owners Club
Join Date: Jan 2014
Location: La Verne, Calif
Posts: 3,649
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[QUOTE=drewtk;2108475]At the beginning of a tow, I inflate to the max pressure on the tire sidewall, 65 psi in the case of load range D tires. The pressure will obviously increase as you tow, but the tires are designed to take that into account. IMO, you're always better off having too much rather than too little pressure.
This is what I do. Set them at Max cold. They will run cooler and are less liable to have issues.
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08-28-2014, 09:24 PM
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#12
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Senior Member
Outdoors RV Owners Club
Join Date: Dec 2013
Location: Pasco, WA
Posts: 1,643
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Quote:
Originally Posted by drewtk
At the beginning of a tow, I inflate to the max pressure on the tire sidewall, 65 psi in the case of load range D tires. The pressure will obviously increase as you tow, but the tires are designed to take that into account. IMO, you're always better off having too much rather than too little pressure.
You mention '2 sides' to tire inflation. What were you referring to?
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X2!!!
Bob
__________________
2019 Outdoors RV 21RD (2023-20XX)
2014 ORV Wind River 250RDSW (2014-2021)
2024 Ram 3500 Laramie CTD 4X4
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08-28-2014, 09:43 PM
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#13
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Senior Member
Country Coach Owners Club Solo Rvers Club iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 37,725
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Some TT/5th wheel manufacturers and some tire manufacturers say to inflate the trailer tires to the maximum on the sidewall due to the extreme twisting forces applied when turning and backing into a space.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft, HWH Active Air
Charter Good Sam Lifetime Member, FMCA,
RV'ing since 1957, NRA Benefactor Life, towing '21 Jeep JLU Rubicon Ecodiesel
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08-28-2014, 11:58 PM
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#14
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Senior Member
Join Date: Oct 2010
Posts: 1,460
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if you want to control bounce, buy a shock kit for the trailer.
I've never had a set of trailer tires live to anywhere close to getting bald from use - they always die a sidewall or tread separation death after two or three years - and that's using max sidewall pressure. Never had a low pressure blowout though!
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