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Old 06-15-2016, 04:03 PM   #1
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Goodyear Marathon, + 10psi to run 66-75 MPH?

I just found that GY says if you want to tow your trailer at speeds above 65
Just add 10psi to your max cold air pressure.
Anyone doing this ??
mike
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Old 06-15-2016, 04:07 PM   #2
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That does not sound wise. Goodyear says, eh? Will they put that in writing?
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Old 06-15-2016, 04:45 PM   #3
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https://www.tirerack.com/tires/tiret...jsp?techid=219
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Old 06-15-2016, 04:56 PM   #4
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You may do that, however the increase is above the reocmmended inflation pressure for your load. not above the max pressure on the sidewall.

So if your recommended inflation is 55 psi for your load, then you can go up 10 psi to 65 psi, but you cannot go above 65 psi maximun cold inflation pressure.
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Old 06-15-2016, 04:57 PM   #5
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Quote:
Originally Posted by daveswenson View Post
So when my tire blows, do I sue Goodyear or Tire Rack?
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Old 06-15-2016, 05:09 PM   #6
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The OP made me cringe.
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Old 06-15-2016, 06:34 PM   #7
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Quote:
Originally Posted by markdoane View Post
You may do that, however the increase is above the reocmmended inflation pressure for your load. not above the max pressure on the sidewall.

So if your recommended inflation is 55 psi for your load, then you can go up 10 psi to 65 psi, but you cannot go above 65 psi maximun cold inflation pressure.
No it is 10 + above max load psi
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Old 06-15-2016, 06:35 PM   #8
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Quote:
Originally Posted by MOS View Post
I just found that GY says if you want to tow your trailer at speeds above 65
Just add 10psi to your max cold air pressure.
Anyone doing this ??
mike
I am positive that you can add 10% to the sidewall max pressure on a LT tire. I am not sure about a ST tire? I don't run them so I don't have to be sure!
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Old 06-15-2016, 07:50 PM   #9
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Not going to try to look it up again but I have seen the Goodyear information that said to pump them up to 75 psi for speeds above 65 mph. It is pretty old information.

No, I am not doing it. I would not do it. Neither pump them up to 75 or run faster than 65 with them.

But what do I know. I have a fairly light weight Airstream. (6400 lbs axle rating) I run P-XL tires on my Airstream at 50 psi and they are rated to a lot faster than I want to go.
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Old 06-15-2016, 08:03 PM   #10
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Thats some old info, most good (not to be confused with goodyears) st rated tires have a speed rating on them. Mine have an M speed rating which is 81 mph but some go up to N which is 87 mph.
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Old 06-15-2016, 09:07 PM   #11
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The gym already comes equipped with an auto explode feature why help accellerste that function by puffing it up more and then making it spin faster?
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Old 06-15-2016, 09:32 PM   #12
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Here is the link to the letter from Goodyear. Nowhere does it say anything about inflating tires to 75 psi.

https://www.tirerack.com/images/tire...plications.pdf
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Old 06-15-2016, 09:38 PM   #13
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Eeeek! Who needs laxatives? No-one.
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Old 06-15-2016, 10:07 PM   #14
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First of all GMT are junk tires, just about everyone on this forum agrees, now over inflating them is plain stupid, they blow out at 65psi @ higher pressure it will just be louder & quicker. Change them out to Maxxis E rated or Michelin LT tires.
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