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Old 09-14-2015, 11:11 AM   #11
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Originally Posted by ROC-REQS View Post
If anyone has experience with the Goodyear Marathons or Maxxis M8008 specifically the ST235/80R16 Load Range E, I would appreciate hearing from you.

Thanks
I had the Goodyear Marathons load range E on my previous 38' 5er and had no problems. HOWEVER, there are plenty of folks in RV-land that would warn you against them. On the flip-side, there are plenty of people who swear by the Maxxis. I'm surprised that you haven't heard from them.
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Old 09-14-2015, 11:28 AM   #12
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ROC-REQS, I have been doing a lot of research regarding tires as HTT has 13” and there are not many options. A few things I have found, with tandem axles you must derate the load capacity of each tire by about 12%, in one of Goodyear’s documents it states up to 20%. This is due to the weight sharing and shock loads from going over bumps and so forth giving a factor of safety not to overstress any the tires.

I do not have the link with me, so I do not know the exact percentages, but was surprised by this information. P rated tires have a side wall strength of about 40% that of ST tires (ok expected) LT rated tires have a side wall strength I think it said of about 80% that of ST tires (I did not know this) and because of the weaker side walls, you must derate the tire. I thought it was by 12 to 20 percent.
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Old 09-14-2015, 04:19 PM   #13
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ROC-REQS,

My trailer is smaller - I just went from 15 inch to 16 inch.

Here is a link with more info: 17.5" Upgrade Information

Looks to me like steel wheels are $150 each, so roughly $800 or $900 after shipping for wheels and lugs. Looks like the Michelin and Goodyear will run somewhere between $400 and $450 each; Sailun around $300 each.

So, far from a cheap date.

One things I did was get a lower priced tire as a spare.
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Old 09-14-2015, 07:42 PM   #14
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I would not own another Goodyear Marathon. Both of my Jayco's had them. My 33' Jay Flight G2 had them and with less than 5000 miles, 3 of the 4 on the ground were separated. My current Pinnacle came with them as well and all 4 were separated. I personally went to Discount Tire a put the TaskMasters that they recommended. G rated, my wheels are like yours with the weight rating vs the psi rating, but the long time manager friend of mine said that he hasn't seen any wheel issues with them. Got metal valve stems, mounted, balanced, and the free replacement warranty for less than $1k for all 4. So far so good, only have 800 miles on them since March, but the rig feels better going down the road than the Goodyear Marathons (Made in China) ever did. If I was someone that traveled all over, then I would of spent the big bucks for the Goodyear G's.
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Old 09-14-2015, 08:26 PM   #15
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You should be able to find the G614 for less than $400. I paid around $320 mounted and balanced last month at a local dealer.
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Old 09-15-2015, 12:57 AM   #16
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There is another G rated tire that a local dealer told me about. It is a Sampson Long Haul 235x85x16 rated over 3700 lbs. He quoted $236 a tire. Don't know much else yet. Anybody using them?
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Old 09-15-2015, 10:50 AM   #17
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Thanks everyone for your help and suggestions.

Decided to go with the Maxxis M8008,
It seems to be the best ST tire out there now and more because of $.

To upgrade to 5 - G614 ST235/85R16 wheels & tires would cost over $2,300 priced at Trailer Tires & Wheels.

And to upgrade all 5 to 17.5" it would cost over $3,200.

Just can't afford that at this time but it's something to save for in the future.
Again thanks everyone for your input and information.
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Old 09-15-2015, 11:39 AM   #18
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Originally Posted by ROC-REQS View Post
Thanks everyone for your help and suggestions.

Decided to go with the Maxxis M8008,
It seems to be the best ST tire out there now and more because of $.

To upgrade to 5 - G614 ST235/85R16 wheels & tires would cost over $2,300 priced at Trailer Tires & Wheels.

And to upgrade all 5 to 17.5" it would cost over $3,200.

Just can't afford that at this time but it's something to save for in the future.
Again thanks everyone for your input and information.
Good decision.
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Old 09-15-2015, 12:05 PM   #19
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For those that might be interested, I believe my TPMS alerted me to the potential tire issue.

I noticed that 2 of the tires were registering lower pressure, but ~4# then the others when cooled down. That is the 2 good tires were reporting 80 PSI and the 2 other tires (ODS Frt & DS Rr) were reporting 76 PSI on the TPM.
76 PSI wasn't low enough to trigger an alarm, but it did tell me that I should do a visual inspection of the tires (and pump them up).
Upon visual inspection I noticed that both tires were starting to bulge.

My guess now is that because of the bulge and tread separation, it increased the internal area of the tire resulting in a lower tire pressure.
Not sure if this is valid, it's just my guess.

Anyway, the lower pressure reading is what caused me to do close inspection of the tires resulting in seeing the bulge and allowed me to avert what could have been a blow-out and potential damage to the trailer.

Proves that there's no substitute for visually inspecting the tires at every stop and before leaving on a trip (along with checking the tire pressure & temps).

IMO our TPMS just paid for itself.
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Old 09-15-2015, 12:05 PM   #20
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Good decision.
Thanks eldermike
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