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Old 11-19-2013, 03:32 PM   #15
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Quote:
Originally Posted by Pullin' Chocks View Post
We copied the info on our tires and insert below:
Goodyear
ST235/80R16
Load Range E
Tread 5 Plys, 2 polyester + 2 steel + 1 nylon
Sidewall 2 Plys, polyester cord
Do Not Mount on 16.5" Rims
Max Load Single 1550 kg, 3420 lbs @ 550 kPa, 80 psi cold
Max Load Dual 1360 kg, 3000 lbs @ 550 kPa, 80 psi cold
Made in China
2212


Our weight rating sticker indicates three 7000 lb axles. Each axle has two tires. Does this mean one of our axles has a GAWR of 7000 lbs? How do we reconcile two tires rated at 3420 or 6840 lbs total to be rated at 7000 lbs? Is it because the axle does not carry the weight of the wheels? (Tire and rim)
The Goodyear ST235/80R16E has a single maximum load capacity of 3420#. The vehicle manufacturer would be in violation of NHTSA safety regulations if they have, in fact, fitted them to a 7000# GAWR axle.

There are two possible answers that would resolve that dilemma. The standards and options for your trailer calls for GY LT235/85R16G tires. Maybe they installed the wrong tires/rims on your trailer?

The vehicle manufacturer can install those tires on 7000# axles if they derate the axles to something like 6750# and use that figure on the trailer's certification label/tire placard. That's a normal procedure and is allowed via the vehicle certification process. You can verify the axles GAWR by looking at the certification label found on the forward left side of the trailer.

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Old 11-19-2013, 03:53 PM   #16
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Quote:
Originally Posted by Pullin' Chocks View Post
We copied the info on our tires and insert below:
Goodyear
ST235/80R16
Load Range E
Tread 5 Plys, 2 polyester + 2 steel + 1 nylon
Sidewall 2 Plys, polyester cord
Do Not Mount on 16.5" Rims
Max Load Single 1550 kg, 3420 lbs @ 550 kPa, 80 psi cold
Max Load Dual 1360 kg, 3000 lbs @ 550 kPa, 80 psi cold
Made in China
2212




Do we have a serious problem with three (7000 lb) axles and the above specified tires?
I do a lot of RV trailer tire researching. Heavy triple axel trailers seem to have a higher incident of early tire failures than double axel trailers. Maybe it's because most of them are toy haulers. In any event, when hauling heavy and close to axle systems GAWR load capacity the Original Equipment tires just don't hold up well. They seem to degrade rapidly and fail very early, sometimes within the first year or long trip. If your current rims are 16 x 6.5 and rated for 110 psi the least expensive upgrade will be to go with the LT235/85R16G tire rated at 3750# at 110 psi. Otherwise, the 17.5" upgrade will also prove to be an easy fitment. There are numerous brands to select from and some are easier to find than other more well known brands.

FE
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Old 11-19-2013, 06:09 PM   #17
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The help and experience just keeps coming, we love this forum! Thanks all. We did look at the trailertireandwheels website. We did see a couple Chinese tires with prices, the rest appeared as if they were not available. We will definitely speak with Scott as we get closer to action. May even give a research call as soon as we have a chance in the next couple of weeks. We will also check the commercial areas, we did not do that thoroughly before. Thanks again for your help!
Steve & Gari
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Old 11-19-2013, 06:54 PM   #18
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Goodyear

"PullingChocks" Are your tire's Goodyear Marathon tires?
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Old 11-20-2013, 03:46 AM   #19
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Check these out. Many are switching to them. I have them on my rig and they are excellent.They will handle your 7K axles which is what I have.$177.99 - Sailun 235/85R16 8244393 tires at SimpleTire.comThey are built as a trailer tire. I have never read about a blowout anywhere on these tires and the cost won't clean out your wallet. I am a consumer only. Good luck.
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Old 11-20-2013, 04:29 PM   #20
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Westwind, yes our tires are Goodyear Marathons.
Mobilcastle the Sailuns are an interesting cost saver. We are thinking we will want the higher load capacity of the 17.5s, but very tempting. Thank you.
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Old 11-20-2013, 10:23 PM   #21
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Originally Posted by Mobilcastle View Post
Check these out. Many are switching to them. I have them on my rig and they are excellent.They will handle your 7K axles which is what I have.$177.99 - Sailun 235/85R16 8244393 tires at SimpleTire.comThey are built as a trailer tire. I have never read about a blowout anywhere on these tires and the cost won't clean out your wallet. I am a consumer only. Good luck.
That is the tires I had on our 5er when we went to Alaska last year. I highly recommend them for a tire upgrade. When a spring broke on the front axle (tandems), the axle naturally cocked at a severe angle. I was concentrating on my driving on top-of-the-world highway and didn't notice the trailer was running sideways. Someone came up behind me and flagged me down, as I turned off the highway a wheel fell off. That wheel had been dragged for miles, the Sailun tire had two flat spots a foot long on it down to smooth rubber with a trace of cords showing. After repaired were completed and the same wheel was re-installed, I drove from Chicken, AK back to Indiana with those tires without incident.
That sold me on Sailun Tires! Now that we have a motorhome, I'd put some on it but Sailun doesn't make my size.
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Old 11-21-2013, 02:57 AM   #22
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We are also running the Sailun's, had them for about 20k miles.

Very satisfied with their performance and wear, no issues.
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Old 11-21-2013, 04:03 AM   #23
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For your wheels and possibly tires, take a look here. http://www.tredittire.com/ for these Sailun/HerculesThey are a major supplier to all trailer manufacturers from boats to heavy equipment goosenecks.
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Old 05-18-2014, 09:29 PM   #24
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Just as a follow up, we report that we upgraded to 17.5" wheels and did so before we had any wheel issues or failures. We were probably very fortunate. Just knowing the extra load capacity and durability we have back there now feels great! Thanks for all of your assistance in getting us straightened out on this project.
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Old 05-18-2014, 09:45 PM   #25
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Confidence in the tires is certainly a good feeling!!
Have a great time on the road.
Joe
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Old 05-29-2014, 04:50 PM   #26
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After two blowouts of the Chinese Bombs, I just replaced my ST235/80R16 E with LT235/85R 16 G Goodyears. I bought the Montana new in 2011 and it came with St tires. I got a lot of conflicting information from several dealers but forum members seem to lean toward LT tires. Even the dealer where I bought the tires said I was buying way more tire than necessary but if you have ever had a blowout on a busy freeway twice, you will do anything to avoid it again. My GVWR is 13,715 lbs. The four new tires cost $1,621 compared to $680 for the ST's.
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Old 05-30-2014, 10:21 PM   #27
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DW & I have a 2012 Keystone Raptor 300MP 5th wheel TH that we purchased used in mid April. Upgraded from a 2005 Cherokee Lite 28A TT. Our maiden voyage proved very satisfying, with a couple of minor issues that I repaired once we arrived back home. The big issue was the tire blowout on the trip home. Original Towmax tires let us down, thankfully there was a nice level median crossover just ahead for us to park in while changing tires. Really sweated the last hour home, hoping there wouldn't be another blowout for our spare was on the ground. Checked inflation before departing campground & they had held the 80psi inflation that I had inflated them to before we left home. Called the local tire dealer and ordered the Goodyear G614 RST. They insisted we didn't need that kind of tire, & I insisted that never again will I run china bombs on this TH. TH already had aluminum wheels for the 110psi rating of the G614's G rated tire. Now we have a higher 3750lb rated tire with a speed rating of 75mph. I run 60-65mph on four lane & interstate highways. We have them installed now & I feel comfortable taking Poppa's Playhouse back on the road again.
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