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Old 10-27-2018, 08:16 PM   #21
CalandLinda
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(So a manufacture can misspec a tire and be alright?)

All the specifications a tire owner needs to know are on the tire sidewall. Many of the materials used by tire builders are kept confidential. The approving authority for those materials may be the Tire & Rim Association (TRA), they also keep it confidential.

(Like the Goodyear G159 on a motorhome. Let’s use one that is not so controversial, such as the G614.)

Because of its unique design qualities it qualifies for the LT prefix, yet it is registered for Regional Trailer Service (RST) and says, for trailer service only, right on it’s sidewall. Its carcass is of all steel construction and its tread cap is designed to be regrooved.

(Because they write the vehicle fitments.)

All original equipment tire fitments are the sole responsibility of the vehicle manufacturer. Their safety guidance comes from NHTSA via FMVSS.

(But I can’t change from a poly fabric casing construction, to an all steel casing construction.)

A polyester LT235/85R16 LRE tire has the same usability specs as a like sized steel cased tire. Same holds true for like sized ST tires.

(One that has a load rating greater than 50% of the axle it’s fitted to, plus a reserve and all at higher speed?)

The vehicle certified axles require tire fitments that meet the FMVSS minimum safety standards for fitment. With automotive tire fitments speed letters should all match. The only speed requirement for ST tires is they must be DOT certified for standard highway service. The GAWR axles do not limit the amount of load capacity of the tires fitted to them. All excess load capacity above the vehicle certified GARWs is considered load capacity reserves. Tire speed ratings are linked to its ability to carry its maximum load at greater speeds.

(And textile 101, many small cords in a bundle are stronger than the same size bundle of larger cords.)

There is no way to confirm that as that sort of tire information is confidential and may differ from builder to builder. When researching around you can find some ST manufacturers that state the building cords in ST tires are larger when compared to cords in LT or P tires. Thus they can carry much more weight than the LT or P tires with the same PSI per like sized tires.

Each tire identifies the basic material and number of cords and belts used in its construction. Size and tensile strength is not mentioned.
 
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Old 10-28-2018, 05:56 AM   #22
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Still think it would be easier to set get a set of Sailuns..........


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Old 10-28-2018, 06:15 AM   #23
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Still think it would be easier to set get a set of Sailuns..........


agree - no-brainer. lets do an easy button - click it - just do it

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Old 10-28-2018, 09:18 AM   #24
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agree - no-brainer. lets do an easy button - click it - just do it

Why buy those when you can spend more for China Bombs? Fixing a flat on the side of the interstate while cars zoom past at 70 or 80 miles an hour is fun.
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Old 10-28-2018, 10:04 AM   #25
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I just had to click on the easy button. Cool.
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Old 10-28-2018, 10:10 AM   #26
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easy button and 5% off
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Old 10-28-2018, 03:45 PM   #27
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I have a question for this thread-- From what I've been able to research there are not many dealers across the US that are carrying the Sailun tire or that can even get them from their distributors. If I have Sailun's on my unit and I have a blowout or a problem with the tire, how am I suppose to continue down the road if there is no dealer in the area that carries or that can get the Sailun brand? I've checked around Omaha and the surrounding area and nobody carries or can get them. That is going through multiple dealers including Discount Tire and other dealers mentioned in previous threads here on the Forum. Am I suppose to sit somewhere until I can order a Sailun in from somewhere else and then try to find a dealer or tire shop to put them on. From what I've been able to deduct from other threads here they will not send them to you personally and only send them to a dealer or tire shop. From what I have learned from Keystone at the several previous Fall Rallies is that they went to Sailuns because they out scored the Goodyear G614's but only by less than a full percent in their testing or comparisons with the Sailun G637's. I am assuming that Keystone got a better price or bid for the Sailuns and went with them instead of the Goodyear's. I'm needing new tires on the Monte before heading South and really up in the air on what to buy. Any suggestions?
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Old 10-28-2018, 04:34 PM   #28
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I have a question for this thread-- From what I've been able to research there are not many dealers across the US that are carrying the Sailun tire or that can even get them from their distributors. If I have Sailun's on my unit and I have a blowout or a problem with the tire, how am I suppose to continue down the road if there is no dealer in the area that carries or that can get the Sailun brand? I've checked around Omaha and the surrounding area and nobody carries or can get them. That is going through multiple dealers including Discount Tire and other dealers mentioned in previous threads here on the Forum. Am I suppose to sit somewhere until I can order a Sailun in from somewhere else and then try to find a dealer or tire shop to put them on. From what I've been able to deduct from other threads here they will not send them to you personally and only send them to a dealer or tire shop. From what I have learned from Keystone at the several previous Fall Rallies is that they went to Sailuns because they out scored the Goodyear G614's but only by less than a full percent in their testing or comparisons with the Sailun G637's. I am assuming that Keystone got a better price or bid for the Sailuns and went with them instead of the Goodyear's. I'm needing new tires on the Monte before heading South and really up in the air on what to buy. Any suggestions?
Rondo,

Failures of the Sailun tires seem very rare so the risk is low. I did pick up a nail in one which required me to mount the spare. The nail was too close to the edge to be repaired, I had a new tire delivered to my home by simple tire within 48 hours.
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Old 10-28-2018, 04:43 PM   #29
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I would get 5 tires. There is very little change you will need the spare and almost no chance you will need to replace 2 tires on any one trip. If you should run into really bad luck and need 2 at the same time one could be replaced with something else. I will only bet on an almost sure thing but I’ll bet you will never need to replace two Sailum tires at once without replacing your camper. They are that dependable.
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Old 10-29-2018, 03:19 AM   #30
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I'm needing new tires on the Monte before heading South and really up in the air on what to buy. Any suggestions?
Whatever - trailer tire - will give you 10-15% reserve load capacity above the trailer's certified GAWRs.

Here lies the greatest problem with the RVIA 10% recommendation. It's for OE tires. Maybe it will force RV trailer manufacturers to start a recommendation listing for acceptable replacement tires.
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Old 10-29-2018, 11:56 AM   #31
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I would get 5 tires. There is very little change you will need the spare and almost no chance you will need to replace 2 tires on any one trip. If you should run into really bad luck and need 2 at the same time one could be replaced with something else. I will only bet on an almost sure thing but I’ll bet you will never need to replace two Sailum tires at once without replacing your camper. They are that dependable.
Lynwood
Just a note: When a catastrophic tire failure happens at highway speed, it's almost certain the opposing tire on a tandem axle trailer will suffer fatal or near fatal internal damages.
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Old 10-30-2018, 11:28 AM   #32
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Cal,

I have not heard of a catastrophic failure with a Sailun, it is generally something that causes a leak. Good reason to have and use a TPMS. If you lose two tires you are going to have to unhook and go find a replacement tire.
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Old 10-30-2018, 12:18 PM   #33
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Hi Cal,

I have had a number of tire failures on SOB TTs over the years and never had a failure on the opposing tire on a tandem axle trailer. Where are you getting your information from?

thanks

Jeff
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Old 10-30-2018, 02:55 PM   #34
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Hi Cal,

I have had a number of tire failures on SOB TTs over the years and never had a failure on the opposing tire on a tandem axle trailer. Where are you getting your information from?

thanks

Jeff
"The industry recommendation is if a tire fails on one side of a tandem-axle trailer, the adjacent tire on the same side should also be replaced as that tire likely bore excessive weight when the tire next to it failed."

That's basically what the USTMA says in chapter 4 of the reference provided below. (Give it a chance, chapter 4 is for all RVs).

https://www.ustires.org/sites/defaul...TruckTires.pdf
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Old 10-30-2018, 03:53 PM   #35
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Cal thanks for the reference. I did a word search on opposite, fail and adjacent. None of the paragraphs containing those keywords could I draw the same conclusion. I may be missing something.
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Old 10-30-2018, 05:35 PM   #36
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Cal thanks for the reference. I did a word search on opposite, fail and adjacent. None of the paragraphs containing those keywords could I draw the same conclusion. I may be missing something.
I am sure if you were to continue on that one tire, there would be some damage. But pulling right over, I don't see where there is going to have that big of effect on the one tire. I think it would have to travel ,some distance ,and build some excessive heat before damage would occur , but that just my opinion.
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Old 10-30-2018, 06:15 PM   #37
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I am sure if you were to continue on that one tire, there would be some damage. But pulling right over, I don't see where there is going to have that big of effect on the one tire. I think it would have to travel ,some distance ,and build some excessive heat before damage would occur , but that just my opinion.
The problem is when you have one tire blow out you have all the weight from that side shift to the other tire on that side and puts very excessive weight on that one tire. If you have a tire slowly deflate then it is not the same and would not be such a big problem. As for finding a Sailun tire if one goes bad, i carry a extra tire and wheel mounted just in case of that situation. I've had a factory wheel go bad two different times and was left with no spare because of the difficulty finding a spare wheel. As has been stated Sailun tires can be delivered to your location where ever you may be in 48 hours. If you know the address ahead then have it delivered there. Big-O tires i believe carry Sailuns. If you can't find a Sailun tire in an emergency then there certainly isn't anything wrong using another brand whether Goodyear or whatever as long as it is G rated. Sailun tires have to good of quality and price to pass up. You could buy 5 new Sailuns and if you lose one then you could buy another brand for a spare and still have 4 Sailuns on the ground.
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Old 10-31-2018, 01:28 PM   #38
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agree - no-brainer. lets do an easy button - click it - just do it

5 Sailuns on my 5er and at 5 years old will be replaced with 5 more.
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Old 10-31-2018, 09:45 PM   #39
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Tires - Air vs. Nitrogen

I've enjoyed this thread on tires but would like to ask about what to use to inflate them, air vs. nitrogen? My SOB had nitrogen tires and they appeared to run cooler than the Monty.



The challenge I have is my small compressor won't handle tires that require 110 psi. A tank of nitrogen starts around 2200 psi and depending on the cubic feet, should last a long time before needing to be changed. A regulator is under $100 and less expensive than a compressor. I've been told nitrogen runs cooler and doesn't leak as much as air.



I'd like to know what MOC thinks about air or nitrogen. I need to be able to top off my tires without having to haul the camper to a dealership. Thanks for your input.
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Old 10-31-2018, 11:24 PM   #40
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Wyatt,

There have been previous threads on this. Do as you please, IMHO nitrogen is a waste of money. I have to air my tires up every 2-3 months. Buy a handy small 150 PSI compressor - one time cost of $100-125. Most gas stations do not have a compressor that will fill your high pressure tires and I would not want to carry around a tank with 2200 psi.
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