Sailun Tire Failure

garyp4951 wrote:
I agree, looks like it lost pressure, and was driven flat before being noticed.

Oh!! It was driven flat alright, for how far I don't know. If it was flat before it starting looking like a forest fire back there , I couldn't tell . I check in my mirrors often, if it was flat it was not noticeable.

The one thing I do, after reading about people trying to get someones attention, and can't. I just glance to see if someone is trying to show me something as they pass . None of that went on .

Cummins12V98 wrote:
"why is the blacken area only at the side bulge area"

I'm betting the other side looks the same. I think that's the area that rides on the ground when the tire is flat.

That tire has a lot of discoloration from being ran flat. I have to confirm , it was not run against any curbing or anything else for that matter. When it was hot enough to leave small pieces of melted rubber on the side of the fifth wheel, its bound to look like it does.

fj12ryder wrote:

BZawlocki wrote:


I've had long e-mail conversations with both Alan and others at TBC Brands (the US distributor for Sailun). I am very confident they will tell you the same thing they told me:

1. The Sailun S637 tire is often sold to commerical truckers who will almost always inflate the tire to 110psi. And they do this for one simple reason - they just do not want to take the time to adjust PSI for each load. So most commerical users inflate to 110psi.

2. Now RVers are different and here is what they recommend. When you have your trailer fully loaded and attached to the truck - weigh the trailer axle load.

3. Use the Tire and Rim Association tire inflation tables for your load to determine PSI. Add 10% to that number and inflate tires to that psi.

4. And almost without exception that last thing they mention is use a TPMS.

Bill

Thanks very much for that information. It's always good to hear from the actual manufacturer, and it's even better when it agrees with present practice. :)

I too had a lengthy conversation with Alan on the phone, he sent me the Sailun inflation chart, which I posted without much luck :(

There is a lot we went over with this tire failure , to make it somewhat short, it was not a blowout, or defective tire as far as both of us were concerned. It was either a puncture ,and slow loss of air, or a jagged pothole got it.

He explained the inflation , and if I thought my trailer rode rough at 100 psi, I don't thing it does, with how things are inside , or does it have any cupping or unusual wear , and it does not.

According to the inflation chart , and my trailer weight which is right around 13K, minus the pin weight , puts me just over 10K on the axles, now if they are equal ,and of course they are not , that puts around 2500 per tire, which only requires 45 psi on ea. This came from Alan before I had been sent the inflation chart from him . I will continue to run 95-100 , I see no problem with it, and he didn't either if the tires were wearing okay .

BZawlocki wrote:


I've had long e-mail conversations with both Alan and others at TBC Brands (the US distributor for Sailun). I am very confident they will tell you the same thing they told me:

1. The Sailun S637 tire is often sold to commerical truckers who will almost always inflate the tire to 110psi. And they do this for one simple reason - they just do not want to take the time to adjust PSI for each load. So most commerical users inflate to 110psi.

2. Now RVers are different and here is what they recommend. When you have your trailer fully loaded and attached to the truck - weigh the trailer axle load.

3. Use the Tire and Rim Association tire inflation tables for your load to determine PSI. Add 10% to that number and inflate tires to that psi.

4. And almost without exception that last thing they mention is use a TPMS.

Bill

Thanks very much for that information. It's always good to hear from the actual manufacturer, and it's even better when it agrees with present practice. :)

I agree, looks like it lost pressure, and was driven flat before being noticed.

"why is the blacken area only at the side bulge area"

I'm betting the other side looks the same. I think that's the area that rides on the ground when the tire is flat.

"He repeated that I would be best served by weighing the trailer and use the tables - he said that's what they are they for."

Blasphemy I say!!!

You mean Sailun recommends using the weight/inflation tables as GY does??? Difference is Sailun says add 10% and GY says add 5psi to what the chart says.

This just can't be. :R

groggy2 wrote:
I replaced the Goodyear Endurance 16's on my 2018 27-5L with Sailun 637's. I was advised by the tire shop that they were advised that 80 psi was the pressure for my application as they didn't have a stabilizer ban in the tire body. I actually have 90psi in all 5 sailuns. Most of my travel so far with this set-up has been the Texas-New Mexico-Arizona area. This summer should tell the story, but so far so good. I pull with a 2001 Ram 3500, quad cab, 19.5 tires on Alcoas, 6 spd with gear vendor overdrive, fass fuel system with 300 hp injectors, and 134 gal. fuel capacity. Mileage to date is 270k. The truck will cruise comfortably at 80 mph, but of course pulling the 5er, speed is held to 65-68 mph. The 5er will gross out around 13k, and we downsized from a 40 ft.Gulfstream Friendship that would run all day long at 70. But I would rather just take it easy with this set up. I may get some tire pressure monitors.

I don't want to wander too far off the topic of the failed Sailun but I would like to share my experiences with the Sailun S637.

I also have an AF27-5L. I run Sailun S637 ST235/85R15. When I first started running these tires I was starting to see weird irregular shoulder wear. I asked about this and was told that the Sailun S637 does NOT have a stress equalizer rib (I'm not really sure what this is but I think it is the same thing that your tire folks called a stablizer ban).

In talking with Alan he said I was over-inflated and I should lower the PSI in accordance with the Tire and Rim Association tire inflation tables. Alan went onto to say that they see this a lot on commerical truckers because they almost always inflate to 110psi.

He repeated that I would be best served by weighing the trailer and use the tables - he said that's what they are they for.

Bill

fj12ryder wrote:

BZawlocki wrote:
...I won't go into load and inflation recommendations in this response but, should you want further information about the facts on load and inflation, I would love to provide details that you could post for all users.

Alan Eagleson, Segment Manager, Sailun Tire Americas

Just as a point of interest, for me and others on the forum who run Sailun tires at pressures below the maximum, could you ask him to provide details about load and inflation recommendations, specifically for trailers. I would love to hear what he has to say about that. I notice that he didn't seem to imply that 100 psi was low pressure.

Thank you very much.

I've had long e-mail conversations with both Alan and others at TBC Brands (the US distributor for Sailun). I am very confident they will tell you the same thing they told me:

1. The Sailun S637 tire is often sold to commerical truckers who will almost always inflate the tire to 110psi. And they do this for one simple reason - they just do not want to take the time to adjust PSI for each load. So most commerical users inflate to 110psi.

2. Now RVers are different and here is what they recommend. When you have your trailer fully loaded and attached to the truck - weigh the trailer axle load.

3. Use the Tire and Rim Association tire inflation tables for your load to determine PSI. Add 10% to that number and inflate tires to that psi.

4. And almost without exception that last thing they mention is use a TPMS.

Bill

I replaced the Goodyear Endurance 16's on my 2018 27-5L with Sailun 637's. I was advised by the tire shop that they were advised that 80 psi was the pressure for my application as they didn't have a stabilizer ban in the tire body. I actually have 90psi in all 5 sailuns. Most of my travel so far with this set-up has been the Texas-New Mexico-Arizona area. This summer should tell the story, but so far so good. I pull with a 2001 Ram 3500, quad cab, 19.5 tires on Alcoas, 6 spd with gear vendor overdrive, fass fuel system with 300 hp injectors, and 134 gal. fuel capacity. Mileage to date is 270k. The truck will cruise comfortably at 80 mph, but of course pulling the 5er, speed is held to 65-68 mph. The 5er will gross out around 13k, and we downsized from a 40 ft.Gulfstream Friendship that would run all day long at 70. But I would rather just take it easy with this set up. I may get some tire pressure monitors.