Sailun 637 ST

[xrated]

I run the Sailun 235/85R16 on my 20K GVWR trailer and they still look like new! Oh wait, I just put them on day before yesterday.....maybe that's why!

I've got 3 axles, so tire load capacity is 26,400 lbs at 110 psi, so I'll obviously be running them at a lower psi....probably around 90 or so. That amount of load capacity at 90 psi will just about equal the tire load capacity from my now removed Westlake "G" rated tires, which after 6 years finally started to dry rot just a bit on the sidewalls. The highest that I've seen on the axles was around 15,300 lbs with the pin being close to 3900 lbs.

And as a side note here.....Walmart.com has the 235/85R16 on sale for $142/per tire.....a pretty good price for them. Shipping to my house was included in that price

[Stircrazy]

Originally Posted by xrated

I run the Sailun 235/85R16 on my 20K GVWR trailer and they still look like new! Oh wait, I just put them on day before yesterday.....maybe that's why!

I've got 3 axles, so tire load capacity is 26,400 lbs at 110 psi, so I'll obviously be running them at a lower psi....probably around 90 or so. That amount of load capacity at 90 psi will just about equal the tire load capacity from my now removed Westlake "G" rated tires, which after 6 years finally started to dry rot just a bit on the sidewalls. The highest that I've seen on the axles was around 15,300 lbs with the pin being close to 3900 lbs.

And as a side note here.....Walmart.com has the 235/85R16 on sale for $142/per tire.....a pretty good price for them. Shipping to my house was included in that price

ya I envy you Americans for that kind of thing, Walmart up here doesn't carry tires anymore, I remember them years and years ago. for me to get the sailuns up here seem to be about 300 bucks a tire mounted.

[xrated]

Originally Posted by Stircrazy

ya I envy you Americans for that kind of thing, Walmart up here doesn't carry tires anymore, I remember them years and years ago. for me to get the sailuns up here seem to be about 300 bucks a tire mounted.

Wow, that would be very painful for my 6 tires. My total with tires, mounting and balancing, taxes, disposal/landfill fee for the old tires...@ $1150......although I did have the pleasure to removing the old ones and installing the new tires/wheels back on the trailer.

[JasonX]

Today I always got my S637 installed on 21' Cougar 364BHL (14K GVWR), one of old trailer king blew out on the highway last weekend. I had to admit I didn't do much homework to choose the replacement, just saw a lot good review on Sailun S637, then pulled the trigger. But realized my rim maybe can't support 110 psi, even though didn't see exact numbers on the rim. Luckily saw Sailun inflation chart, I don't really need that high load support, 90~95 psi should be good enough.

[sourdough]

What tire was on there originally, size and load range? I suspect that large of a trailer had enough wheel to support the LRG tire. Look on the back of the wheel. Might show max psi, max weight or both.

[RickV]

Originally Posted by sourdough

What tire was on there originally, size and load range? I suspect that large of a trailer had enough wheel to support the LRG tire. Look on the back of the wheel. Might show max psi, max weight or both.

☝ My previous 5ver was rated at 13k and had the 110psi rated wheels.

[rhagfo]

Originally Posted by JasonX

Today I always got my S637 installed on 21' Cougar 364BHL (14K GVWR), one of old trailer king blew out on the highway last weekend. I had to admit I didn't do much homework to choose the replacement, just saw a lot good review on Sailun S637, then pulled the trigger. But realized my rim maybe can't support 110 psi, even though didn't see exact numbers on the rim. Luckily saw Sailun inflation chart, I don't really need that high load support, 90~95 psi should be good enough.

Well 3,860# @ 90 psi you should be great on a 14,000# GVWR.
We had a neighbor that operated log trucks. He was having a real problem with loosing treads due to rock cuts running his tires at 110 psi. He did the math an concluded he had enough tire capacity at 90 psi, so he started running his tires at 90 psi. His tire failures went to almost zero, greatly reducing the cutting issue. Running over ballast rock is much like running over pot hole roads. Tires with lower will flex around sharp edges, hard ones get cut.

[Bluecube]

New to the forum. Found this thread. Lots of good info. Thanks to all. Now I'll take a look at my rims to see what they are spec'd for. I would hope since my tires are 110 PSI Cold Max the rims are also. Thinking about running @ 105 since my rig is no where close to max load. We travel light!

[RickV]

Originally Posted by Bluecube

New to the forum. Found this thread. Lots of good info. Thanks to all. Now I'll take a look at my rims to see what they are spec'd for. I would hope since my tires are 110 PSI Cold Max the rims are also. Thinking about running @ 105 since my rig is no where close to max load. We travel light!

I'd bet the farm that they are is your tires are. People here will disagree but, I had a chart from Saliun that showed inflation pressures IRG to weight. I can't find the file right now but if you search around you can find it.

[jxnbbl]

Are you saying you have Saliun tires? If that is the case I would bet they are aftermarket as I've never seen a post in this forum with this brand on a 2021 Cougar that wasn't (could be wrong). I would take off one of the wheels and or crawl behind and look for a stamped weight limit is to determine if the tire max capacity/psi is supported by the rim.

[Bluecube]

Originally Posted by jxnbbl

Are you saying you have Saliun tires? If that is the case I would bet they are aftermarket as I've never seen a post in this forum with this brand on a 2021 Cougar that wasn't (could be wrong). I would take off one of the wheels and or crawl behind and look for a stamped weight limit is to determine if the tire max capacity/psi is supported by the rim.

They are on the 2024 Alpine. ST235/80R16 S637 Came with the camper new. Sorry I didn't specify which camper. Sorry about that. I removed the 2021 out of my signature block. Crawling under the camper is exactly what I'm going to do today.

[JRTJH]

Originally Posted by Bluecube

They are on the 2024 Alpine. ST235/80R16 S637 Came with the camper new. Sorry I didn't specify which camper. Sorry about that. I removed the 2021 out of my signature block. Crawling under the camper is exactly what I'm going to do today.

You likely won't be able to see the cast markings on the wheels while mounted on the hub. The wheel sits too close to the hub to see anything "around the flange on the hub... You'll need to remove the wheel to see the cast markings. Here's one of my 15" wheels. As you can see, the cast markings are "actually on the rear surface of the spokes" and impossible to see when the wheel is mounted to the hub.

[Bluecube]

Originally Posted by JRTJH

You likely won't be able to see the cast markings on the wheels while mounted on the hub. The wheel sits too close to the hub to see anything "around the flange on the hub... You'll need to remove the wheel to see the cast markings. Here's one of my 15" wheels. As you can see, the cast markings are "actually on the rear surface of the spokes" and impossible to see when the wheel is mounted to the hub.

That was exactly the case. I'll have to do it once I get my rig out of the shop. Thanks!

[Stircrazy]

Originally Posted by JRTJH

You likely won't be able to see the cast markings on the wheels while mounted on the hub. The wheel sits too close to the hub to see anything "around the flange on the hub... You'll need to remove the wheel to see the cast markings. Here's one of my 15" wheels. As you can see, the cast markings are "actually on the rear surface of the spokes" and impossible to see when the wheel is mounted to the hub.

JRTJH, what are you looking for to tell you the air pressure they will handle?
I had mine off and can't find anything to do with the air PSi, or do you just go by the max weight, and if so what weights correlate to what pressure?

[JRTJH]

Originally Posted by Stircrazy

JRTJH, what are you looking for to tell you the air pressure they will handle?
I had mine off and can't find anything to do with the air PSi, or do you just go by the max weight, and if so what weights correlate to what pressure?

The "generally accepted rule" is that the weight rating follows the maximum tire weight rating and the pressure required for that rating...

So, as an example for the photo I posted of my wheel, the 6H rating (6 lug holes) is 2830 which corresponds to the weight rating for a 225 75R15 LRE tire which is 2830 pounds@80PSI. So the "generally accepted wheel pressure is 80PSI. It would be the same for a 16" wheel that is rated to carry 3640 pounds has a pressure rating of 80PSI and a 16" wheel rated to carry 3960 has a pressure rating of 95PSI or a 16" wheel rated to carry 4080 pounds has a pressure rating of 110PSI. If the wheel has the specific weight rating but no pressure rating, it's "generally accepted" that it has a corresponding pressure rating for the trailer tire intended to be mounted on that wheel.

On some wheels, with a pressure rating stamped on the wheel, that pressure is the "max for the wheel" but in the absence of a pressure rating, the max load is what most people use to determine the max pressure.

If you would want to explore further than that, I'd recommend contacting the wheel manufacturer to see if they can provide a maximum pressure rating. Some will, some simply will tell you to use the trailer manufacturer's tire size pressure rating. If they do, what I would guess they're really saying is "we don't release that information to the public"...