PSI for Scamp Acorn Trailer Tires ??? - Fiberglass RV


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Old 08-21-2013, 11:03 AM   #1
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Name: Nancy
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PSI for Scamp Acorn Trailer Tires ???

Alright, this is probably obvious, but I'm confused . . . there are stickers over the wheel wells on each side of our 1979 Acorn stating that the maximum psi for the tires is 20 lbs. . . . . we have new tires that recommend 35 psi as optimum inflation. . . . Which is it?
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Old 08-21-2013, 11:22 AM   #2
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The newer higher inflation.
The sitckers were put there in 1979 tires technology has changed quite a bit since then. For trailer tires, (we'll hear a lot of arguments about this) the correct inflation is the maximum printed on the sidewall.
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Old 08-21-2013, 12:02 PM   #3
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Thanks Byron - That's what I thought - but I figured I'd ask just to be sure.
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Old 08-21-2013, 12:31 PM   #4
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Nancy, I think it is likely that you have that reversed: the 20 psi sticker value is probably a minimum or recommended pressure for the original tires to support the trailer, not a maximum; the 35 psi value is probably the maximum pressure for the new tires (and would be required for maximum capacity), not the minimum. I don't know, but I suspect this is the situation.

I agree with Byron on two points:
  1. tires (at least some of them) have changed
  2. tire inflation pressure is controversial

I suggest using the Google search feature in this forum to look for "tire pressure" and be ready for a lot of reading - rather than re-launching the whole debate.

I also suggest looking at the load capacity information on the tire's sidewall, and comparing it to the axle weight of the trailer, to check that the tires have sufficient load capacity for the trailer.
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Old 08-21-2013, 03:39 PM   #5
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20 psi or less in the trailer tires could be disastrous.
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Old 08-21-2013, 03:56 PM   #6
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Originally Posted by Mike Magee View Post
20 psi or less in the trailer tires could be disastrous.
... but it might be fine.

Rather than getting into the whole explanation and debate again, without even knowing the size or type of tires that Nancy is using, why don't we let her read what has already been posted (in many threads) and then ask if she has any questions?
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Old 08-21-2013, 07:44 PM   #7
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Google, under-inflated tire wear I'd go with what the tire manufacturer recommends. YMMV
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Old 08-30-2013, 10:53 AM   #8
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I would email the tire manufacture with the type of tire you bought, and the weight of the trailer. They will give you the right pressure and speed rating for your tires Then go camping!
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Old 08-30-2013, 12:29 PM   #9
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There's no need to e-mail a specific request, as this information is clearly published. It does require specific tire information (size, type, load range, etc... none of which we have in this discussion) but in a private message discussion it appears that Nancy and her husband have sufficient information and are not interested in pursuing the subject in any more detail.
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