Sailun Tire Failure

twodownzero wrote:
While I agree that a tpms is a good idea, tires with solid quality control could have probably prevented this. Get the garbage Chinese tires off your rig and keep the new tires perfectly inflated and you will not have another failure short of road hazard. I also concur with the above posters that trailers should generally have their tires aired up to their max unless to solve funny wear or ride quality issues. The side loads on trailer tires are unique and hard tires are safer and will run cooler. Air and good construction will prevent blow outs.

In the past, I would generally tend to agree with you about the quality control of Chinese tires. But someone on a forum starting talking about Sailun S637 commerical trailer tires and I started to do some research.

I'm not sure if you are familiar with the ISO 9001 standard but it is essentially a set of standards for how a company operates and speaks to the belief that the company wants to adhere to quality.

Sailun has the ISO 9001 standard - it's not an easy accomplishment. So in my mind Sailun is not just like all the other Chinese tire makers.

Upon further internet research I just could not find even a single complaint about th S637 tire. It's an ST tire built for commerical use.

Now the rest of my comments are just my opinion so take them for what that's worth! LOL

Sailun openly says they market to a certain price point. They are not as expensive as many other G-Rated ST tires. My GUESS is that in order to make this price point they made a decision to make a tire that does NOT have a stress equalizer rib. I'm not a tire engineer but from what I can find the stress equalizer rib helps to combat irregular tire wear.

Again, this is my guess, but I think the Sailun S637 is a little more sensitive to proper inflation for the load than many of the more expensive tires in this category.

If the tire is over-inflated for the load, the tire does not sit properly on the ground and you can get weird tire shoulder wear. So my thinking is that for this particular tire that just going with the max PSI may not be the best practice.

I agree with you that RV trailer tires take a lot of side-ways stress and for that reason I believe that ST tires are the best solution for trailer. Even when faced with the fact that 10s of thousands of folks use the Michelin XPS/Rib LT tire on their trailers, Michelin says that is not a warrantable application. I know thousands if not millions of folks use LT tires on their trailers but if you ask the people at Michelin about trailer tires they will say they don't make an ST tire.

So, I'm gonna push back on your statement that all Chinese tires are junk - I think Sailun is an exception to your position. And my opinion is based on their track record plus the fact that the company really seems serious about achieving high standards.

Sorry for the long response.

Bill