Smoothing out my bumpy ride - Page 3 - Fiberglass RV


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Old 06-08-2015, 06:52 AM   #29
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Just as all cars and trucks have a sticker giving the manufacturer's recommended tire pressures, so does my Bigfoot. It's 32 PSI. I run them at 40 PSI.

Walt
Why Walt? By comparison to the suggested 32lbs what difference have you seen/felt by running the tires at 40lbs???
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Old 06-08-2015, 06:56 AM   #30
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Ha ha. I kind of expected that question. No good reason, really, just a subconscious reaction to all the much higher pressures people are always talking about on the forums I guess.

Walt
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Old 06-08-2015, 07:37 AM   #31
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12" tires are going to ride rougher due the the small diameter and the meeting angle to the tread. That said the tires also spread the movement over the pair to some extent.
I went with 14" tiers over the Scamp 13" to improve this factor and gain more margin for load in the heat we have here in L.A. (Lower Alabama)
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Old 06-08-2015, 03:23 PM   #32
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Just as all cars and trucks have a sticker giving the manufacturer's recommended tire pressures, so does my Bigfoot. It's 32 PSI. I run them at 40 PSI.Walt
Wouldn't over inflating be asking for a tire failure?
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Old 06-08-2015, 03:27 PM   #33
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Wouldn't over inflating be asking for a tire failure?
From one of the earlier posts:

When I first picked up the trailer the tires were soft and the ride was really terrible. The tires are actually rated for 90 PSI (I think). They are wee 12" tires. Seems I could only get about 70PSI out of the compressor I used to top them up. I should check where they are at now. They look firm but might still be relatively soft.
Thanks.
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Old 06-08-2015, 03:48 PM   #34
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Having discovered that one of my rims is bent and has a wobble, I'm looking at replacing all four rims and tires. Any recommendations on a 4.8-12 4 lug rim/tire combo? Seem to be a few choices out there and I'm not clear on the application - that is, are the higher pressure tires (990llbs @ 90PSI) better suited to boat and utility trailers? Is a 50PSI tire better for me? Also wonder If I could go to 13's for the extra inch of ground clearance?
Thanks for any suggestions.
K
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