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Old 09-03-2020, 04:39 PM   #1
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Tire pressure

We're new owners of a 21c. .....picked up in Sumas last Friday, left Lynden KOA today on our way to Glacier National Park. We have a tire pressure question. Picked up with 75 psi, sidewall says 75, but Escapes departure checklist state a max of 50.
What's up? Thank you.
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Old 09-03-2020, 05:18 PM   #2
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Answers will range from 50 to 65, and I guess now 75 if that's what the tire says. I go by the plate on the trailer, mine says 50 psi even though the tires say 65.
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Old 09-03-2020, 05:36 PM   #3
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They are your tires you can run them where you feel most comfortable. Personally 75 lbs pressure seems pretty high to me. You will find a sweet spot where the ride ( Trailer not bouncing all over) and tire wear and trailer behavior are what you want. Once you know your trailer weight you’ll probably see that your tires have quite a bit of leeway on weight capacity probably all the way up to nearly 8,000 lbs At maximum inflation and you’ll not be at or over 5,000lbs. on your trailer more than likely. Good luck on your Glacier visit. Hope there aren’t any fires keeping you from getting where you want to go.
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Old 09-03-2020, 07:21 PM   #4
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Quote:
Originally Posted by harleyrk View Post
We're new owners of a 21c. .....picked up in Sumas last Friday, left Lynden KOA today on our way to Glacier National Park. We have a tire pressure question. Picked up with 75 psi, sidewall says 75, but Escapes departure checklist state a max of 50.
What's up? Thank you.
Harleyrk,

75 psi is news to most of us who have had these trailers for awhile.

Would you please give more info on these tires: brand, size (usually 205x75x15) load rating, if it's shown, speed rating, or anything else significant. Originally the tires were mostly Carlisle with a max of 50psi, then there have been upgrades on speed rating from 65mph to maybe 80 or 82mph with possibly higher psi, too.

Lots of tire experts on this forum, but we don't know what you have.
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Old 09-03-2020, 07:45 PM   #5
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Once I knew the weight on my axle, I looked at the tire manufacturer's recommended pressure for that particular weight. That's where I set mine. It is much less than the max. capacity/pressure imprinted on the tire sidewall.
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Old 09-03-2020, 11:00 PM   #6
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Originally Posted by dfandrews View Post
Once I knew the weight on my axle, I looked at the tire manufacturer's recommended pressure for that particular weight. That's where I set mine. It is much less than the max. capacity/pressure imprinted on the tire sidewall.
I checked the same thing - the manufacture notes suggested a very low pressure would be sufficient - but this doesn't leave any safety factor should one tire blow. On the other extreme, the sidewall maximum pressure gives a terribly rough ride but a single tire could support the entire trailer. The sweet spot for me was a hair under 50 psi. Plenty of margin for error but not too bouncy.
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Old 09-04-2020, 08:29 AM   #7
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The advice I got from Discount Tire , Pomp Tire , Casita ,and our local tire shop was to run our trailer tires at or close to the max pressure shown on the tires
I run ours between 60 to 62 PSI. ( Tire Max PSI = 65 lbs )
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Old 09-04-2020, 10:58 AM   #8
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Originally Posted by steve dunham View Post
The advice I got from Discount Tire , Pomp Tire , Casita ,and our local tire shop was to run our trailer tires at or close to the max pressure shown on the tires
I run ours between 60 to 62 PSI. ( Tire Max PSI = 65 lbs )
When I switched from the ETI supplied Carlisles to Goodyear Endurance, the Goodyear Sales manager insisted they had to be inflated to the maximum sidewalk pressure (65 psi). Another member told me that would bounce the trailer excessively. When I called Goodyear Customer Service, they revered me to an Endurance Inflation Chart and told me to inflate to specifications for the weight of the load. Based on that, I should inflate each tire to 45 psi. I am, however, inflating them to 50 psi as was recommended by Escape. I personally believe many supposedly knowledgeable tire people are not really as knowledgeable as they seem to think they are.
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Old 09-04-2020, 11:30 AM   #9
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Originally Posted by C&G in FL View Post
When I switched from the ETI supplied Carlisles to Goodyear Endurance, the Goodyear Sales manager insisted they had to be inflated to the maximum sidewalk pressure (65 psi). Another member told me that would bounce the trailer excessively. When I called Goodyear Customer Service, they revered me to an Endurance Inflation Chart and told me to inflate to specifications for the weight of the load. Based on that, I should inflate each tire to 45 psi. I am, however, inflating them to 50 psi as was recommended by Escape. I personally believe many supposedly knowledgeable tire people are not really as knowledgeable as they seem to think they are.
True. That's why manufacturers publish inflation charts. There is NO blanket inflation rule or universal pressure.
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Old 09-06-2020, 04:15 PM   #10
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Escape recommends 50lb. Checking the load chart for my Goodyear Endurance tires, that is pretty close to what Goodyear specifies for the weight of our trailers. Some tire gurus suggest running higher pressures(up to max inflation spec) to reduce interply shear on the tires. I have had no problem running 50lb.
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Old 09-06-2020, 07:21 PM   #11
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Originally Posted by CarlNH View Post
Escape recommends 50lb.

That recommendation is for the tires that are supplied with the trailer though.
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Old 09-06-2020, 08:50 PM   #12
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That recommendation is for the tires that are supplied with the trailer though.
Yes, but:
  • the load-inflation chart for every brand and model of ST tire is identical (that's part of the ST standards); and,
  • the appropriate inflation pressure for a given application is the same for all ST tires of the same size, regardless of load range.

The exception to the above would be if the stock tires were marginal and the recommended pressure were limited by the maximum allowed pressure... but that's not the case with Escapes, particularly with the tandem axle trailers.
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Old 09-06-2020, 10:01 PM   #13
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Yes, but:.

My comment was a result of my changing my load range C tires to load range D. Next person to own the trailer would not necessarily know the history, or that the 50 psi on the ETI sticker and in the manual referred to load range C that the trailer was originally equipped with.
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Old 09-06-2020, 10:11 PM   #14
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My comment was a result of my changing my load range C tires to load range D. Next person to own the trailer would not necessarily know the history, or that the 50 psi on the ETI sticker and in the manual referred to load range C that the trailer was originally equipped with.
I understand that, and my point is that 50 PSI is still right with the load range D tires.
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Old 09-06-2020, 10:12 PM   #15
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Originally Posted by steve dunham View Post
The advice I got from Discount Tire , Pomp Tire , Casita ,and our local tire shop was to run our trailer tires at or close to the max pressure shown on the tires
I run ours between 60 to 62 PSI. ( Tire Max PSI = 65 lbs )
What we do too. Tire says 65 . We run at 60:. Pat
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Old 09-07-2020, 05:43 AM   #16
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What we do too. Tire says 65 . We run at 60:. Pat
Just a suggestion.........

Before listening to the so-called tire “gurus” who are really all over the place with their advice based upon their “irrefutable tire knowledge,” perhaps you should call the tire manufacturer. The manufacturers do not formulate ST tire inflation charts just for something to do when they are bored, or if they print them just to waste paper. I still hear people claim that batteries must not be stored on concrete. That may have been true when battery cases were made out of rubber, but not when plastic is the material of choice. Too many people have chosen to drink the grape Kool-Ade and since some tire KIA has told them “always inflate to maximum sidewall pressure” they believe it as if it were carved in stone and they perpetuate the belief. Just because someone is a tire retailer, it does not make them a tire expert. They are not like doctors, pharmacists, or other specialists who have to take a test and be certified before they can pass out advice. The two manufacturer customer service reps I have spoken with (Carlisle and Goodyear) regarding trailer tires have both referred me to the inflation chart based upon load weight.
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Old 09-07-2020, 07:03 AM   #17
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We still don't know what tires HARLEYRK has on the new 21. Hopefully we'll hear something before the 75 PSI beats his trailer to death.

Maybe somebody else with a new trailer can tell us about these new mystery tires.
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Old 09-07-2020, 07:15 AM   #18
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Originally Posted by C&G in FL View Post
Just a suggestion.........

Before listening to the so-called tire “gurus” who are really all over the place with their advice based upon their “irrefutable tire knowledge,” perhaps you should call the tire manufacturer. The manufacturers do not formulate ST tire inflation charts just for something to do when they are bored, or if they print them just to waste paper. I still hear people claim that batteries must not be stored on concrete. That may have been true when battery cases were made out of rubber, but not when plastic is the material of choice. Too many people have chosen to drink the grape Kool-Ade and since some tire KIA has told them “always inflate to maximum sidewall pressure” they believe it as if it were carved in stone and they perpetuate the belief. Just because someone is a tire retailer, it does not make them a tire expert. They are not like doctors, pharmacists, or other specialists who have to take a test and be certified before they can pass out advice. The two manufacturer customer service reps I have spoken with (Carlisle and Goodyear) regarding trailer tires have both referred me to the inflation chart based upon load weight.
Good Morning Carl !! By the way I am enjoying my drink of choice ,a cup of hot black coffee , never touch kool aid .
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Old 09-07-2020, 10:00 AM   #19
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Good Morning Carl !! By the way I am enjoying my drink of choice ,a cup of hot black coffee , never touch kool aid .
My drink of choice is also hot black coffee. Didn’t think you actually drank Kool-Ade. It was a metaphorical statement. It doesn’t have to be swallowed or even touched to “drink it.”
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Old 09-07-2020, 10:12 AM   #20
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Good Morning Carl !! By the way I am enjoying my drink of choice ,a cup of hot black coffee , never touch kool aid .
Hi Steve
Are you back from Pilot Knob and if so how was it? I like that area of the state. My son does not have a Camper but he likes getting out. He’s got a big outfitter tent. However this week he’s rented a cabin at a county park in Clay county. He’s got a one and a half year old so a handful for sure. I was looking at the park he’s going to be at as a possible rally site in the future. It’s Scharnberg park. Looks pretty nice.
I remember going up into the CCC built observation tower at Pilot Knob but it’s been 50 years. I’ve drank a lot of Kool aid since then, some almost killed me. And I’m not talking metaphors here.
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