Help, Im Fishtailing (and other first trip encounters) - Page 4 - Fiberglass RV


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Old 09-07-2012, 02:46 PM   #43
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Thanks for the smiles Franchesca and the table McBrew! Called arrow trailer 270 for a new axle with brakes and 235-290 to install. (I'm going to assume 290 or 600 total)

Any other recommendations for the El Lay area?
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Old 09-07-2012, 03:28 PM   #44
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My local RV dealer, Richardson's in Riverside, sends all of it's axle and frame work to Arrow. Tell em' that Mike and CJ sent you, maybe that will get you a free cup of coffee..... Let us know your experience.

BTW: be sure to get somethuing that improves your ground and wheel well clearance
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Old 09-07-2012, 03:55 PM   #45
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Quote:
Originally Posted by mcbrew View Post
Two places: one on each side of my Scamp (manufacturer's sticker) and also in the Goodyear documentation for ST tires.



My Scamp 13's tires are the top row... Same as the original ones that it came with. The loads listed a for EACH tire, not the total axle weight. So you can see that 20 PSI is the proper inflation so long as there is not more than 795 pounds per tire.

Please re-read this chart. At the TOP... it says "Load Limits at various inflation pressure"... It DOSE NOT SAY "Recommended inflation pressure at various loads" as has been interpreted by many here.
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Old 09-07-2012, 05:22 PM   #46
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The rest of the story:
I have talked with the engineering staff at Yokohama a number of times about loads, inflation pressure and ageing on tires used on RV's and their general recommendation is to inflate RV tires to at least 90% of the max pressure shown on the sidewall to provide best tracking, wear and sidewall life. They have told me that while lower pressures will support less weight, it can also cause additional heat build-up in the side walls leading to earlier side wall failure. That's Yokohama's take, but as some one will mention, they don't make tires for our application.
That said, this clip is from the www.goodyear.com/rv site:

"Unless trying to resolve poor ride quality problems with an RV trailer, it is recommended that trailer tires be inflated to the pressure indicated on the sidewall of the tire. Trailer tires experience significant lateral (side-to-side) loads due to vehicle sway from uneven roads or passing vehicles. Using the inflation pressure engraved on the sidewall will provide optimum load carrying capacity and minimize heat build-up."

But this topic, like several others, are neverending stories.
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Old 09-07-2012, 06:17 PM   #47
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So another way of looking at the chart is @ 45 psi every tire(except for 2) is able to carry the maximum it was designed for. By decreasing the psi you decrease the capability. Gives new strength to the old argument- use maximum on tire and you will be okay.
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Old 09-07-2012, 06:21 PM   #48
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EXCEPT for the "B" rated tires that top out with a maximum inflation of 35 psi. Again, always read the information on the sidewall.
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Old 09-07-2012, 07:51 PM   #49
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Originally Posted by mcbrew View Post
Two places: one on each side of my Scamp
Scamps owner manual says "Tire inflation is the most important factor in tire life. Inflation pressure should always be as recommended by tire manufacturer (as indicated on tire)." This kinda contradicts what they have posted on your trailer saying to use 20 psi.

I have never heard from an industry professional, whether in the RV or tire industry, to use anything but from near max to full maximum tire pressure as indicated on the tire. From everything I have heard, and from using my form of logic, this would seem to be true in my way of thinking (though my way of thinking has been questioned many times before ).
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Old 09-07-2012, 07:58 PM   #50
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I have never heard from an industry professional, whether in the RV or tire industry, to use anything but from near max to full maximum tire pressure as indicated on the tire.
For low profile performance tires, on passenger cars. The max pressure is max, you do not typically want to run that pressure. Poor ride and poor grip and uneven tire wear will likely result.

Not all that relevant to this discussion, sounds like all being equal you do want to run highish pressures on a trailer. I'm just sayin', for the sake of conversation.
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Old 09-07-2012, 08:03 PM   #51
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Quote: "I have never heard from an industry professional, whether in the RV or tire industry, to use anything but from near max to full maximum tire pressure as indicated on the tire."

On motorhomes and trailers that's pretty much the standard.

But it can been very different on passenger cars. Corvair tire pressure issues basically made, what wasn't a really great car to start out with, into a death trap that liked to turn turtle when tire pressure stickers werre ignored. But I digress.....
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Old 09-07-2012, 08:26 PM   #52
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Originally Posted by Bob Miller
That said, this clip is from the www.goodyear.com/rv site:

"Unless trying to resolve poor ride quality problems with an RV trailer...".
And that is exactly why I run a lower, acceptable pressure. At max pressure, my Scamp bounces a little too much. I find things all out of place inside the camper. I know this is not good for the frame, the camper body, items inside the camper, the tongue, the coupler, and my car's hitch. Lowering the pressure to a safe level, according to both MY Scamp and MY tire's manufacturer smooths out the ride and keeps everything in place.

AS FOR THE HEAT ISSUE: I check my tires with an infrared thermometer, as well as the hubs. Even in 105 degree heat on the highway, my Scamps tires have never been hotter than my car's tires.
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Old 09-07-2012, 08:59 PM   #53
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For low profile performance tires, on passenger cars. The max pressure is max, you do not typically want to run that pressure. Poor ride and poor grip and uneven tire wear will likely result.

Not all that relevant to this discussion, sounds like all being equal you do want to run highish pressures on a trailer. I'm just sayin', for the sake of conversation.
As per the discussion, it was trailer tires I was talking about.
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Old 09-07-2012, 09:10 PM   #54
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Old 09-07-2012, 09:39 PM   #55
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Francesca, I have some red pills, and some pretty orange ones. Want one?
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Old 09-07-2012, 10:14 PM   #56
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Francesca, I have some red pills, and some pretty orange ones. Want one?
I'll have to check with the head nurse here...
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