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Old 07-22-2018, 11:37 AM   #11
SMCrane1554
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Originally Posted by tentcamper View Post
I have the same tire. I inflate them to 65. But if I was not driving at times over 65 MPH, I would inflate them to 55 PSI. But I run my tires with extra PSI's

The right answer is read the goodyear tire chart below and calculate what your PSI should be. You should inflate them to the right PSI per the load that you will be carrying on each tire. Don't forget to reduce your tongue weight.

Goodyear a few years ago had a service bulletin stating that if you were going to travel faster then 65 MPH to add 10 PSI to the inflation chart. That is what I have done with my tires because at time to time im over 65
MPH.
If the load is per tire, should we divide the load by the number of tires on the Trailmanor? For example, if my TM weighs 3500 lbs, and it has 4 tires, wouldn't the load be 875 lbs/tire?
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Old 07-23-2018, 08:47 AM   #12
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The best way, is to get the weight on each tire is with a scale. You will not find the weight on all 4 tires the same because of the balance and load. Since most people, including myself never get the weight of each tire. I'm sure a TM the street side is much heavier with the fridge, kitchen sink, bathroom, water on the street side.

If you don't know the weight on each tire. I think it is recommended to use: Load less tongue weight, divided by numbers of tires, times somewhere between 1.15 and 1.25to to adjust for the load and balance and to have a safety factor. I use 130.0%
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Old 07-23-2018, 08:58 AM   #13
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See the GY ST tire inflation chart on attached chart. I would be north of the recommended number. I run my 225/15's at 65 psi.

https://www.goodyearrvtires.com/pdfs/rv_inflation.pdf
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Old 06-27-2022, 07:56 PM   #14
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Didn’t the 3326 come with 13” tires? Did you have to install a lift for the 14” ?
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Old 06-27-2022, 08:59 PM   #15
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Didn’t the 3326 come with 13” tires? Did you have to install a lift for the 14” ?
Depends on the year. My 2007 3326 has 14” wheels. Later ones might’ve had 15” wheels. You might really be overthinking this upgrade. What size are your 13” tires?
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Old 06-27-2022, 09:25 PM   #16
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I have a 3225 tandem with 175/80/R13 the year is 2000. I was looking at a old brochure that shows 13” tires on a 3326 and I didn’t stop to think that different years might have different size tires.
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