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Old 11-09-2012, 08:40 AM   #1
CamillaMichael
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Tires on 20k+ lb Fifth Wheels

We often discuss tires in this forum...wondering if anyone knows what kind of tires are run on the REALLY heavy (those monsters that weigh in over 20k) fifth wheels????
 
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Old 11-09-2012, 11:42 AM   #2
hydman
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Usually a "J" rated tire on 17 1/2" rim. If I remember correctly they're rated around 4800lbs of carrying capacity per tire....Walt
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Old 11-09-2012, 12:48 PM   #3
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Anyone out there go with these on your Montana?
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Old 11-09-2012, 12:52 PM   #4
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No real reason to do that. Assuming they would fit you'd be paying for far more capacity than you need. They would still go flat from nails etc and would also be no good after 5-7 years due to age.
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Old 11-09-2012, 01:05 PM   #5
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I was going to go with Goodyear G114s on 17.5s but the cost would have been pretty high. The rig came with the 16 inch wheels, in order to shift over I would have had to buy new wheels, replace the wheel studs changing from 1/2 to 9/16 inch. The tires are a bit higher than G614s but they are rated at 4750. So the total cost would have been close to 3 thousand + . I got the G614s for 360 each mounted. If I had gone with the g114 and 17.5s the rims would have added about another 2K to the equation. I had an estimate to remove the old 1/2 inch studs and drill and reinstall 9/16 inch studs and it was about 100 bucks a wheel. If you can get the dealer to pop for the 17.5 wheels/tires/ lugs then you good to go but it is just to costly for me to go that route.
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Old 11-09-2012, 01:06 PM   #6
CamillaMichael
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Quote:
quote:Originally posted by DQDick

No real reason to do that. Assuming they would fit you'd be paying for far more capacity than you need. They would still go flat from nails etc and would also be no good after 5-7 years due to age.
Of course, on the other hand, you wouldn't have to worry about your tires being too close to capacity...or maybe exploding because they are not really suited for the weight they carry.... From some of the posts I have seen, it would seem that MANY people are not getting 5-7 years out of their Marathons (and now we are starting to hear of trouble with the G614s), so I would imagine factoring short life span of the Marathons (and G614s ??), you may be ahead buying something like the J rated tires... I do not know; however, it sure would be nice to travel without worrying about tires.
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Old 11-09-2012, 01:43 PM   #7
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Just for clarification: The GY G114 is an "H" rated tire and avail in 215/75R17.5, rated at 4805 @ 125PSI and 30.5 inches in diameter vs the G614's 30.7 diameter. Our SOB runs a little heavier than the typical Montana and we ordered it with the G614s, but currently making plans to upgrade to the MorRyde IS and will have MorRyde install the G114s and new rims as part of the upgrade.
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