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Old 07-11-2016, 08:11 PM   #15
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Originally Posted by powermaker View Post
I noticed on the link i posted that there were two different weight ratings also. the 4080# and 3640#. It says the 4080# is for "load carrying capacity single" and the 3640# is for "load carrying capacity dual". Is that referring to single vs dual axles? So there are actually 2 different ST235/80R16 model of tires? Sorry for all the questions.
Usage on your trailer is "single". Dual configurations are like what is found on a a pick-up truck with 4 tires on the rear axle.

Normally even the "off shore" tires rated at 3750# are steel cased as opposed to the more popularly used polyester cased tires.
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Old 07-11-2016, 08:12 PM   #16
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Quote:
Originally Posted by powermaker View Post
I noticed on the link i posted that there were two different weight ratings also. the 4080# and 3640#. It says the 4080# is for "load carrying capacity single" and the 3640# is for "load carrying capacity dual". Is that referring to single vs dual axles? So there are actually 2 different ST235/80R16 model of tires? Sorry for all the questions.
Any reference to dual , would be for dual wheels on each end of the axle as in a dual RW 1 ton truck . There were a few dual wheel 5ers built.
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Old 07-11-2016, 08:18 PM   #17
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Gotcha, thanks
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Old 07-11-2016, 08:56 PM   #18
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Thanks for the tip, but my manufacturer (Evergreen BayHill) went out of business 2 days after I bought the 5ver!


And I thought I had bad luck with vehicles .

Any chance you could post a picture of the front side of the rim , maybe a member can identify it from the photo and get the manufacturer that way.
Or at least give the name of another RV that uses the same rim.
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Old 07-12-2016, 09:27 AM   #19
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Scott, you posted a Very Good question... I have looked on our alloy rims on our 2016 Cougar, (be it 15"wheels) and it gives NO PSI rating, only a load rating.. I was concerned as the first thing I did was get rid of the 'china bomb' tires and splurged for a set of Maxxis tires, E rated instead of D rated like it came with. The load rating (in lbs) on our wheels match the load rating on the E tires... The D's were 65 PSI, the E's are 80PSI,,, so I am concerned...
As far as those saying your tires/axles are under rated, like said before a good portion of your trailer weight goes on the truck. Our 4400lb axles have (loaded) 3000 and 3040 lbs each... Tires/wheels I think are 2830 lbs.. (each) no prob... Let us know what you find out please...
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Old 07-12-2016, 09:37 AM   #20
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In the RV trailer wheel and tire world, they're weights and PSIs all correspond with each other.
Rims have a weight rating that directly corresponds with the load rating for a tire. And the PSI is good for that rim if the load rating is not exceeded.
A 15" 6-5.5 RV rim will have a load rating of 2830lbs.
A 225/75/15E ST trailer tire will have a load rating of 2830 @80psi
A 225/75/15D rated tire will have a load rating of 2540lbs @65psi
The tire is underrated for the rim.
No reason you can't upgrade to an E rated tire from a D rated tire.
RV rims and tires are not like what's used in the auto world. You have multiple rim and tires sizes with load ratings that don't match each other.
Here's a link to one of the big RV rim distributors. They supply rims to many RV trailer MFGs.
Tredit Tire Home
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Old 07-12-2016, 12:25 PM   #21
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ordered the Sailun tires part #5541960 ST235/80R16

They are a G rated 14 ply tire and my tire shop says the tire load and my rim load are compatible so i'm happy. I also looked at the Goodyear 614s but they were a little over double the cost and he said I would not see any difference in quality. He stock goodyear and has to order the Sailuns but he couldn't give me any reason to by the Goodyears over the others. I'll also be replacing the stems with high pressure valve stem.

Thanks for all your help,
Scott
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Old 07-12-2016, 05:35 PM   #22
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Quote:
Originally Posted by Cumminsfan View Post
In the RV trailer wheel and tire world, they're weights and PSIs all correspond with each other.
Rims have a weight rating that directly corresponds with the load rating for a tire. And the PSI is good for that rim if the load rating is not exceeded.
A 15" 6-5.5 RV rim will have a load rating of 2830lbs.
A 225/75/15E ST trailer tire will have a load rating of 2830 @80psi
A 225/75/15D rated tire will have a load rating of 2540lbs @65psi
The tire is underrated for the rim.
No reason you can't upgrade to an E rated tire from a D rated tire.
RV rims and tires are not like what's used in the auto world. You have multiple rim and tires sizes with load ratings that don't match each other.
Here's a link to one of the big RV rim distributors. They supply rims to many RV trailer MFGs.
Tredit Tire Home
Great info. Thanks very much !!!
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Old 07-12-2016, 06:46 PM   #23
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ordered the Sailun tires part #5541960 ST235/80R16
Excellent choice for 7k axles.
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Old 07-12-2016, 11:30 PM   #24
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Scott, I know some like the Sailun tires but, I have no experience with them on 5W or tt, just on other truck I had and they were worn out by 20k. You'll time out the tires before they wear out. Be sure not to exceed speed rating listed on tire. That's a lot of tire failures come from speeding over tire rating, the other is over loading one side of the axle having too much weight on one tire. I personally bought Goodyear G614 for their coverage, (basically insurance) for the price difference. If a Goodyear G614 blows they'll replace the tire and pay for any repair the tire damaged to the rig. I have had no hassles with them on the that blew getting repairs made. My buddy's heavy rig blew st tires, he upgraded to 17.5" wheels and Goodyear tires. He has had no troubles in 4 years with close to 40,000 miles on them. JMHO.
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Old 07-12-2016, 11:59 PM   #25
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What ever tires you go with or have, remember to check air pressure regularly. Especially when your traveling before and during use. TPMS are good but they only activate when they reach a certain psi. Lower pressure equals higher tire temp that can equal a tire failure. My 2 cents. All these I've stated in this and my last post, is to help minimize any tire failures. But, sometimes they just fail.
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Old 07-13-2016, 06:29 AM   #26
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Thanks for all the tips, we don't full time so 20k miles doesn't sound too bad to me. lol
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Old 08-01-2016, 01:52 AM   #27
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powermaker......we also have a Bayhill 340RK and just put the 235/80 R16 tires on our unit. The Wheel max Lbs is gonna be fine from what I understand. we havn't been on a long trip yet but will be in the next two weeks. the short trip between the tire shop and storage was great, pulled real nice.
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Old 08-01-2016, 03:26 AM   #28
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110 psi
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