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Old 03-13-2012, 07:57 PM   #11
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Even though ST tires are only rated for 65 mph, it's intesting to note that Goodyear "authorizes" increasing Marathon tire pressure by 10 psi if driven over 65 mph. I have started inflating my load range D Marathons to 75 psi even though I never exceed 65 mph. So far, so good.
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Old 03-13-2012, 10:36 PM   #12
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Quote:
Originally Posted by Ranger431 View Post
Agreed - I check tire pressures before every trip as well, to include return trips. I carry my own compressor as well, just to make it easy.
I'm so OCD I carry two, a 12 volt and a 120 volt. Plus an inverter to run the 120 if I don't have shore power.
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Old 03-13-2012, 10:38 PM   #13
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Quote:
Originally Posted by Roy W. View Post
Even though ST tires are only rated for 65 mph, it's intesting to note that Goodyear "authorizes" increasing Marathon tire pressure by 10 psi if driven over 65 mph. I have started inflating my load range D Marathons to 75 psi even though I never exceed 65 mph. So far, so good.
I read that notice as well. I still had failures of Goodyear tires.

So far, the only thing that has worked is going to load range E.
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'13 Excel Winslow 34IKE
'12 GMC Sierra 3500HD
Previous RV's: '03 MobileScout Titan 29DBS; '01 Sunnybrook Lite 2708 SLE; '99 Coleman Utah
Previous TV's: '02 Chevy Suburban 2500 8.1 4.10; '99 Chevy Express 1500 5.7
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Old 03-14-2012, 06:15 AM   #14
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I will be replacing my "E" rated tires with "G" rated. I'm not over the max load per tire, but closer than I like. The "G" tires will give me a few hundred more pounds cushion.
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Old 03-14-2012, 08:01 AM   #15
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I will likely stay with E rated tires. Will price Maxxis when the time comes.

I have been looking at tire pressures and temps on my TST monitor and have noticed the tire pressures increase over 10 psi when hot. I don't know if I want to start out 10 psi high.

I can run all day at 63 mph.
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