Tire pressure - Page 2 - Fiberglass RV


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Old 04-21-2015, 09:02 PM   #15
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Originally Posted by fidgetboy View Post
Thanks all for the info, currently I am inflated to 42 psi with the max being 50 psi listed on the tire itself. I think I will bump it up by the sounds of it. I am actually planning on weighing it at the start of the my trip next week as there is a DOT scale that is open 24 hours a day at no charge about and hour away.

Thanks again, Jason
Your trailer is likely a bit light for "C" rated tires.... "B" rated tires with a max pressure of 35# may have been more appropriate. no worries though.
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Old 04-22-2015, 10:38 AM   #16
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OMG... We go through this dance every time the questions about tire pressure comes up.

First and foremost, for a number of reasons besides tire pressure, Ya gotta know the weight of your trailer and tongue weight when loaded and ready to go. If in doubt, follow (a) below for tire pressure.


a) I have yet to find any proof that running the maxmum pressure shown on a side wall has any negative effect on tire life or tracking, It may make the ride firmer, but that's about it. I have personally contacted Michelin and Yokohama with this question and they concur.


b) All tire manufacturers have a load vs tire pressure chart available and, as mentioned, the pressures shown are MINIMUM pressures for those loads.


c) To drive and "Feel" a tire's temp to determine if the pressure is correct is just not as accurate or as safe as using a manufacturers table, and there is no evidence available that a "Cool" tire is a bad idea anyway.


d) And even the thought of using any tire for 10 years scares the bejezzes out of moi. Tire failures on the road can not only be dangerous & expensive, they can cause considerable damage to your rig as well as collaterial damage to those around you. I pull off my tires, regardless of appearance/miles/condition, shortly after their 6th birthday and refuse to drive or tow on any over 7 years old.
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Old 04-26-2015, 06:40 AM   #17
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Compared to Bob I'm wildly conservative, we change our tires every 3 years, some where between 30 and 60,000 miles depending on our travel during those years.
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Old 04-26-2015, 08:28 AM   #18
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I have gone 6 years now on my tires, and will likely look at replacing them within the next year, or so. My tire store manager tells me that he would love to sell me a new set, but said mine look great, and will last a few years more. His take is the tire companies are just trying to sell more tires (along with covering their butts), whereas he is trying to do right for his customers, thus keeping them for long term.

I do lots and lots of shorter extended weekend trips, but have only done a couple multi-week trips, and I bet I don't have much more than 20,000 kms on my tires.

If I was to take off on a long trip, I would definitely replace beforehand. Unfortunately, no long trips with my trailer this year.

Not even realizing that manufactures put a timeline on their tire life, my last trailer, a 24' stickie, went almost 15 years without even a flat.
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Old 04-27-2015, 08:21 AM   #19
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You can consult a general board on this link:
http://www.vrcamping.com/_doc/articl...r/pression.pdf
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Old 04-27-2015, 08:27 AM   #20
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You can consult a general board on this link:
http://www.vrcamping.com/_doc/articl...r/pression.pdf
I have seen most of this information before, but never consolidated on one page like this. A great resource.
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Old 04-27-2015, 09:40 AM   #21
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Originally Posted by floyd View Post
Your trailer is likely a bit light for "C" rated tires.... "B" rated tires with a max pressure of 35# may have been more appropriate. no worries though.
FYI... Scamp stopped putting "B" load rated tires on their trailers a few years ago. I replace my tires about 5 years ago and couldn't even find any "B" load rated tires. I called Kent and he thought we all should go to "C" load rated tires, and inflate to 50psi.
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