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Old 04-02-2016, 08:56 AM   #1
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Tire Pessures - Confused

Ok, I know I should have this down pat. Maybe I'm having a senior moment or I'm just second guessing myself. I weighed the coach last year. Here are my weights

FRONT
3420 . . 3120



5960 .. .. 6400


Tires are Goodyear G670. 245/70R19.5

I'm thinking a tire pressure of 85 - 89 all around will be ok. Am I wrong? With all the threads I've read about blow outs has me second guessing myself. The placard from Newmar says 92 all around.

Thanks guy and gals.
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Old 04-02-2016, 09:03 AM   #2
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Well when I look at the chart

http://www.goodyearrvtires.com/pdfs/rv_inflation.pdf

I think you are on the right track
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Old 04-02-2016, 09:10 AM   #3
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ttp://www.goodyearrvtires.com/pdfs/tire-care-guide.pdf
ignore my previous I just had coffee and reread my post. I must have been cross eyed!!
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Old 04-02-2016, 09:29 AM   #4
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Quote:
Originally Posted by pasdad1 View Post
Well when I look at the chart

http://www.goodyearrvtires.com/pdfs/rv_inflation.pdf

I think you are on the right track
I already had that chart downloaded and saved. I have never figured out what the high lighted (bold) pressures in the chart indicated.
So my RRs are carrying 6,400 between them, so divide by 2 and that gives me 3,200 per tire and that's the weight I look up in the chart using the (d), without going below the minimum pressure specified. Since that is the heavy side of the axle, the other side would get the same pressure.

Sorry for what should be a simple question. I just want to make sure I'm thinking right.
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Old 04-02-2016, 09:46 AM   #5
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Quote:
Originally Posted by BPoland View Post
Ok, I know I should have this down pat. Maybe I'm having a senior moment or I'm just second guessing myself. I weighed the coach last year. Here are my weights

FRONT
3420 . . 3120
5960 .. .. 6400
Tires are Goodyear G670. 245/70R19.5

I'm thinking a tire pressure of 85 - 89 all around will be ok. Am I wrong? With all the threads I've read about blow outs has me second guessing myself. The placard from Newmar says 92 all around.

Thanks guy and gals.
BPoland
I suggest you use the pressure recommended on the Goodyear inflation chart for their G670. 245/70R19.5 tires.

In your case use the chart recommended PSI based on 3,420 lbs in both front tires and the PSI based on 3,200 lbs, (6400 divided by 2), for each of the 4 rear tires.

Any Goodyear tire dealer will give you a copy of the inflation chart for the Goodyear tires on your coach...(or you can find one online).
Mel
'96 Safari
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Old 04-02-2016, 09:49 AM   #6
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It appears as if Goodyear decided to use the same chart for multiple tire load ratings. The chart implies that your tires are sold in load ratings F and G. The bold numbers indicate the maximum weight/pressure for that load rating. In the case of your tires (made after 2/28/06):

F-rated: 4080@95 psi singles, 3970@95 psi duals
G-rated: 4540@110 psi singles, 4410@110psi duals

They could have split the load ratings to different lines on the table, but they didn't.
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