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Old 08-28-2012, 10:18 PM   #1
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G670 Tire Question

My Georgetown came with Goodyear G670 245/70R19.5 tires. My wall plate in the coach says to inflate to 82psi. I have not weighed the coach yet, but looking at the Goodyear inflation chart for these tires, 80psi is the absolute minimum.

Was curious as to what others are running for tire pressure? My 351ds is what I consider loaded average.

I will get around to weighing.
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Old 08-28-2012, 10:35 PM   #2
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Quote:
Originally Posted by awwall
My Georgetown came with Goodyear G670 245/70R19.5 tires. My wall plate in the coach says to inflate to 82psi. I have not weighed the coach yet, but looking at the Goodyear inflation chart for these tires, 80psi is the absolute minimum.

Was curious as to what others are running for tire pressure? My 351ds is what I consider loaded average.

I will get around to weighing.
What's the max inflation on tire sidewall ?
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Old 08-28-2012, 10:42 PM   #3
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Max is shown as 110psi
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Old 08-28-2012, 10:45 PM   #4
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Quote:
Originally Posted by awwall
Max is shown as 110psi
I figured it might .
We have a trailer that has 19.5 tires and we run straight up 100.
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Old 08-28-2012, 11:58 PM   #5
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Do they look like they are underinflated?
If you want to know for sure you will have to weigh the rig and compare that weight with the one one the wall. Then you will find out what your need to do.

Asking here is will just give you suggestions.

My wall plate says 90 psi for mine and max is 110 psi on the tires.
So if I question that I must start with a motrohome weigh in at a CAT scale.
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Old 08-29-2012, 12:23 AM   #6
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Iggy, I fully intend on weighing, just have not had the opportunity yet. I just wanted a "feel" from others on what they were running. I had looked at Goodyear charts and noticed the min psi on my tires was 80 and FR stated 82 as recommended. I just wondered why the recommended was so close to minimums.
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Old 08-29-2012, 12:48 AM   #7
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Quote:
Originally Posted by awwall View Post
Iggy, I fully intend on weighing, just have not had the opportunity yet. I just wanted a "feel" from others on what they were running. I had looked at Goodyear charts and noticed the min psi on my tires was 80 and FR stated 82 as recommended. I just wondered why the recommended was so close to minimums.

What is your GVW and which weight is your chassis?
Now much weight for the front tires?
Here is my data plate if you want to see.
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Old 08-29-2012, 04:55 AM   #8
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awwall,
There was a thread about a year or so ago about tire pressures for Georgetowns - do a search and you will find it.
It is important to know the weight of your rig - also weigh the corners - and it sounds like you will get around to weighing.
I too have 19.5s on my Georgetown and I run my tires at 90-91 PSI.
Good luck,
Adam
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Old 08-29-2012, 10:05 AM   #9
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The important thing to remember with tires and their pressure.............

A tire size and pressure is obviously suggested as a tire of choice by the manufacturer for their application.........motorhome or trailer. Don't think that your rig is the only one for the tires in question. Motorhome tires and trailer tires would never typically be interchangeable, even if they do have the same tire dimensions. The maximum pressure listed on the sidewall is for the tire itself...........NOT the pressure you should inflate to because it is on your rig. Refer to the placard by your manufacturer for your rig as to what pressure you should run.
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Old 08-29-2012, 10:23 AM   #10
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Iggy
Just curious, your axles are rated for a total of 23000 lbs and yet your GVWR is only 22000 lbs. On my 378 the total axle ratings are equal to the GVWR.

Do you know why the GVWR total does not equal axle rating ?
Gary
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