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09-20-2023, 09:42 AM
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#161
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Member
Join Date: Oct 2013
Location: Calgary, Alberta
Trailer: Escape 17B, April 2014
Posts: 97
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Quote:
Originally Posted by 0210
The very minute you leave pavement you should be airing down all tires (including your vehicle) to 16-19 PSI. Not only will this improve in-vehicle comfort in a HUGE way, but it'll make your trailer run 10x smoother, and as an added benefit, it won't damage the dirt road nearly as much as a fully-inflated tire.
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While airing down tires when off the pavement is *key* to arriving in camp with less shooken up vehicle contents, the pressure recommended here is _VERY_ low and tire damage is likely for all but the lightest of vehicles.
Removing 10-15% of the hot (measured) tire pressure when you leave the pavement will add a huge degree of comfort for passengers and contents on gravel/dirt roads. The exact pressure desired will be dependent on weight and speed.
It is also important to have available a method of airing those tires back up when you are returning to the pavement and the higher speeds you will be going.
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09-20-2023, 09:55 AM
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#162
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Senior Member
Join Date: Oct 2008
Location: St. Thomas not BVI., Ontario
Trailer: 2014 Escape 5.0TA / 2016 Ram Eco Diesel 4X4
Posts: 8,038
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Hi: All... My worst damage happened during a trip thru NFLD in 2019. Hit a short sharp washout on the side of the highway that slammed the trailer hard enough to crack the battery case and alloy the juice to dribble out onto the trailer floor. What a mess!!! Alf
escape artist N.S. of Lake Erie
__________________
Quote Bugs Bunny..."Don't take life too seriously, none of us get out of it ALIVE"!!!
'16 Ram Eco D. 4X4 Laramie Longhorn CC & '14 Escape 5.0TA
St.Thomas (Not the Virgin Islands) Ontario
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09-20-2023, 11:05 AM
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#163
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Senior Member
Join Date: Mar 2016
Location: Burlington Twp., New Jersey
Trailer: 2010 Escape 19
Posts: 7,146
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Quote:
Originally Posted by KLRchickie
While airing down tires when off the pavement is *key* to arriving in camp with less shooken up vehicle contents, the pressure recommended here is _VERY_ low and tire damage is likely for all but the lightest of vehicles.
Removing 10-15% of the hot (measured) tire pressure when you leave the pavement will add a huge degree of comfort for passengers and contents on gravel/dirt roads. The exact pressure desired will be dependent on weight and speed.
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I'm glad you brought this up. The load capacity of the very popular Goodyear Endurance ST205/75R15 tire for example falls to 1220# at 25PSI. That would likely put the tandem axle Escapes total tire capacity just under their GVWR. Of course some weight is on the tongue, not tires, and if you are loaded moderately with regards to cargo carrying capacity you would likely still be fine. On the other hand a single axle Escape like the 17 loaded even 500# under the 3500 GVWR would have their tires overloaded at this lower pressure. Approach the GVWR and the tires on a 17 would be overloaded by as much as 350# each.
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09-20-2023, 11:29 AM
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#164
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Senior Member
Join Date: May 2013
Location: ..., New Mexico
Trailer: 2013 Esc19/'14 Silvrado
Posts: 4,193
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Do not leave home without one.
__________________
Myron
"A billion here, a billion there...add it all up and before you know it you're talking real money." Everett Dirkson
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09-20-2023, 11:41 AM
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#165
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Senior Member
Join Date: Oct 2017
Location: Smithers, BC, British Columbia
Trailer: Escape 21, July 2018 delivery
Posts: 322
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Quote:
Originally Posted by rubicon327
I'm glad you brought this up. The load capacity of the very popular Goodyear Endurance ST205/75R15 tire for example falls to 1220# at 25PSI. That would likely put the tandem axle Escapes total tire capacity just under their GVWR. Of course some weight is on the tongue, not tires, and if you are loaded moderately with regards to cargo carrying capacity you would likely still be fine. On the other hand a single axle Escape like the 17 loaded even 500# under the 3500 GVWR would have their tires overloaded at this lower pressure. Approach the GVWR and the tires on a 17 would be overloaded by as much as 350# each.
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Can you share where you obtained the data on tire pressure vs. load capacity for the Endurance tires please?
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09-20-2023, 03:33 PM
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#166
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Senior Member
Join Date: Mar 2016
Location: Burlington Twp., New Jersey
Trailer: 2010 Escape 19
Posts: 7,146
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Quote:
Originally Posted by AllanEdie
Can you share where you obtained the data on tire pressure vs. load capacity for the Endurance tires please?
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https://www.goodyearrvtires.com/pdfs/rv_inflation.pdf
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09-20-2023, 05:32 PM
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#167
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Senior Member
Join Date: Oct 2017
Location: Smithers, BC, British Columbia
Trailer: Escape 21, July 2018 delivery
Posts: 322
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Quote:
Originally Posted by rubicon327
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Thanks, much appreciated. Given the gross weight of the E21 (~5000lbs), and four tires, only ~30psi seems needed for safe operation. I am not sure whether a dual designation would apply to a twin axle trailer though. If it does, psi might have to be higher than 30psi. I have been running ~40psi, so perhaps still a bit high.
Tire wear on our Endurance tires looks even though, and we have just about worn them out, so 40psi can't be too far off the mark.
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