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Old 07-10-2016, 09:49 PM   #1
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Angry Tires do not match 5th wheel weight

Why would Forest River sell my Salem 29RKSS with tires that will not hold the weight of the 5th? If I add the UVW of 7869 and the CCC of 3709, this totals 11,578 pounds or 2894 per tire. You will not find this in a 15 inch tire. This is very frustrating.

Factory installed are Bias Ply 225x75xD15 tires and they will not properly carry the load of my 2013 Salem 5th wheel.

Are others having this same issue?

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Old 07-10-2016, 10:01 PM   #2
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They deduct the load that the truck would carry from the load on the wheels. 10 to 20% typically.
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Old 07-10-2016, 10:02 PM   #3
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The tires don't carry the full weight. You have to subtract the pin weight from your gross.


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Old 07-10-2016, 10:07 PM   #4
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Hello,

They normally put radial tires on from the factory, did you order or have bias ply tires put on the trailer? But you never know what they might have in stock.

I found this tire in bias ply
Std. Equiv. H78 x 15
Load Range: D (8-ply)
Max. Capacity: 2540 lbs. each
Overall Diameter: 28.7"
Maximum PSI: 65 lbs.


There is 1500 lbs on the pin unloaded probably closer to 2,000 fully loaded.

So taking your weight off the total you have 9,500 left.or 2375 per tire. The sample tire is 2540 lbs

So you have enough fully loaded capacity.
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Old 07-11-2016, 01:41 PM   #5
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Originally Posted by B and B View Post
Hello,

They normally put radial tires on from the factory, did you order or have bias ply tires put on the trailer? But you never know what they might have in stock.

I found this tire in bias ply
Std. Equiv. H78 x 15
Load Range: D (8-ply)
Max. Capacity: 2540 lbs. each
Overall Diameter: 28.7"
Maximum PSI: 65 lbs.


There is 1500 lbs on the pin unloaded probably closer to 2,000 fully loaded.

So taking your weight off the total you have 9,500 left.or 2375 per tire. The sample tire is 2540 lbs

So you have enough fully loaded capacity.
A 5th wheel trailer has significant weight supported by the front jacks, or by the pin and hitch in your tow vehicle. You have to consider that in evaluating weights.
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Old 07-11-2016, 01:49 PM   #6
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First off the tires it comes with are generally considered "delivery and display" tires. Read all the posts on here about blow-outs and you should see that the first thing to do when you buy a new trailer is get some decent tires. Give the junk that it comes with away because they are not easy to sell. This way you can put whatever you like on it. About the only real choice you have is Maxxis. All the other junk is made in China including the poorly rated Goodyear Marathon..
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Old 07-11-2016, 05:58 PM   #7
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Cheap tires

None of the Chinese trailer tires will carry the advertised weight very long.
And they are almost all Chinese.

Try a load range higher than what comes on the trailer. I had all 4 tires go on my six month old Prime Time Spartan. Prime time passed the buck to the tire manufacturer. The weight on the tires was 500 lbs less than what they were rated for. I weighed the trailer and I know exactly how much weight was on the tires when they blew. Now I have $2k damage on my new trailer.
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Old 07-11-2016, 06:20 PM   #8
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None of the Chinese trailer tires will carry the advertised weight very long.
And they are almost all Chinese.
well i got over 10.000k's on a set of goodyear marathons and no problems yet.

what i think happens is some people don't bother to inspect and keep them aired up and they over heat.
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Old 07-11-2016, 06:25 PM   #9
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I agree, yes there are failures. That is true every where. But we live in a world where they need tpms because people will not even check their oil or air pressure otherwise.. I also feel it is the users abuse of the tires 95% of the time.

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Old 07-11-2016, 11:09 PM   #10
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Upgrade your tires.

It took me a lot of looking to find 14" tires that had a speed rating of 81 mph,and load range D, but I found them at eTrailer.com

Newer trailer tires are coming out with the higher speed rating, and upgrading to a higher load rating eliminates most of the problems. I've upgraded tires on 4 trailers and one SUV, and it has eliminated blowouts. You can still run over a nail, but that doesn't really happen very often.

Keep looking, and ask the seller what the Speed rating is. Eventually you will find it. Load Range E 15 inch tires are rated for 2830 lbs @80 psi.
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