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Old 04-02-2018, 03:00 AM   #21
Golfmedik
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Originally Posted by carl n susan View Post
No matter how good that Goodyear warrantee might be for the 614's, it ends after 4 years from the manufactured date on the sidewall. Ask me how I know.
I was told the same when talking to GY after my 614 blew a fist sized hole in the sidewall. However, GY did send me a check for half the price of the tire that blew out even though the cause was undetermined. That helped as my rig is only two years old and has 614s on it.
Now about the Sailun S637s being made in China. Yes they are, but they are the only Chinese tire that meets BOTH the US import and export specs. Most only meet the import as oddly as it sounds. That being said, make sure you have the clearance between the tires you will need as one size of the Sailuns are taller than the other and may decrease the gap between the tires for those that use X-chocks. Most people do not realize that Sailun S637s now come in two sizes. 235/80/16 and 235/85/16..
Attached is the load chart of you would like to see them.
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Old 04-02-2018, 04:28 AM   #22
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Originally Posted by Golfmedik View Post
I was told the same when talking to GY after my 614 blew a fist sized hole in the sidewall. However, GY did send me a check for half the price of the tire that blew out even though the cause was undetermined. That helped as my rig is only two years old and has 614s on it.
Now about the Sailun S637s being made in China. Yes they are, but they are the only Chinese tire that meets BOTH the US import and export specs. Most only meet the import as oddly as it sounds. That being said, make sure you have the clearance between the tires you will need as one size of the Sailuns are taller than the other and may decrease the gap between the tires for those that use X-chocks. Most people do not realize that Sailun S637s now come in two sizes. 235/80/16 and 235/85/16..
Attached is the load chart of you would like to see them.
Ok. I see the chart has different load sets. I have a 2014 Mountaineer 331 rlt. I am assuming that the rim that came on this unit is only rated to 80 PSI. cold so i would be ok to still get these tires even if i cant get them to 110PSI? And it shows an (E) after the weight am I to assume its reducing the G rated to E if i can only get to 80 PSI?
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Old 04-02-2018, 05:15 AM   #23
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Ok. I see the chart has different load sets. I have a 2014 Mountaineer 331 rlt. I am assuming that the rim that came on this unit is only rated to 80 PSI. cold so i would be ok to still get these tires even if i cant get them to 110PSI? And it shows an (E) after the weight am I to assume its reducing the G rated to E if i can only get to 80 PSI?
That would be correct. The inside of your rims(usually on the spokes) will be stamped "110PSI" if they are compatible with that load range. If they are 6 lug wheels, most are not capable, but if 8 lug, then very possible. Either way I would still put in metal valve stems as the rubber ones tend to fail more these days. Plus, they are required for 110psi as rubber ones are only rated for 80psi tires.
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Old 04-02-2018, 07:43 AM   #24
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Is it seen with the wheel on or would i have to remove it?
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Old 04-02-2018, 09:07 AM   #25
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The Chines have always made some good tires however our RV manufacturers chose to use the lowest priced tire they could find
.
My concern is why the Sailun tire if as good as or better than the G614 is almost half the price.
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Old 04-02-2018, 09:56 AM   #26
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Could it be that the descriptor of "as good or better than the G614" might include the fact that the tire is also cheaper to buy. Physical attributes are but one evaluating criteria, price would be another. Each gets "points" in the purchase process and could thus be "awarded a subjective phrase like "as good or better" when the whole is considered. Some people would take points off just because the tire is made in China. To each, his or her own.
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Old 04-02-2018, 10:06 AM   #27
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Originally Posted by Golfmedik View Post
I was told the same when talking to GY after my 614 blew a fist sized hole in the sidewall. However, GY did send me a check for half the price of the tire that blew out even though the cause was undetermined. That helped as my rig is only two years old and has 614s on it.
Now about the Sailun S637s being made in China. Yes they are, but they are the only Chinese tire that meets BOTH the US import and export specs. Most only meet the import as oddly as it sounds. That being said, make sure you have the clearance between the tires you will need as one size of the Sailuns are taller than the other and may decrease the gap between the tires for those that use X-chocks. Most people do not realize that Sailun S637s now come in two sizes. 235/80/16 and 235/85/16..
Attached is the load chart of you would like to see them.
Your chart shows maximun 4080 pounds at 110 psi . The tires now have 4400 pounds at 110 psi. I guess Sailun has not updated there chart yet.
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Old 04-02-2018, 10:26 AM   #28
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Is it seen with the wheel on or would i have to remove it?
Some can be seen without removing the wheels, but it would have to positioned just right to see it.
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Old 04-02-2018, 10:31 AM   #29
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Your chart shows maximun 4080 pounds at 110 psi . The tires now have 4400 pounds at 110 psi. I guess Sailun has not updated there chart yet.
No one I know of has a different chart out yet. I searched a couple of weeks ago when we put new ones on a friend's Sandpiper and could not find one. I did find this even though it it not a load chart, just a max.
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Old 04-02-2018, 11:07 AM   #30
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Originally Posted by Texan View Post
Your chart shows maximun 4080 pounds at 110 psi . The tires now have 4400 pounds at 110 psi. I guess Sailun has not updated there chart yet.
235/80/16 is at 4080 and 235/85/16 is at 4400#
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Old 04-05-2018, 11:21 AM   #31
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Originally Posted by richfaa View Post
The Chines have always made some good tires however our RV manufacturers chose to use the lowest priced tire they could find
.
My concern is why the Sailun tire if as good as or better than the G614 is almost half the price.
IMO that is the beauty of it all.

From your concerns, and peace of mind, you would probably would be better off with the Goodyears.

I replaced the G614's last year without hesitation with the Sailuns, without the slightest concern.
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Old 04-05-2018, 11:56 AM   #32
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Psi in sailun.......

Hello all,
Need some info please about the sailun tires but I’m a little confused I have a 17 Montana 3661 RL with 2 axles. There is 2 tires per axle. 4 tires total. They are the sailun s637 235 80 r 16. I have the stock suspension on the 5er I believe it is the 3000 moryde? I do not know the weight on each tire but empty weight of 5er is 13200 give or take a few pounds and the GVW is 16600 give or take. I have looked up the sailun chart and searched on this forum and it calls for 110 psi per tire. Is this a standard psi to run in each tire or will it vary depending on how much the 5er weighs at the time? I’m not sure total weight of 5er at this time but it should be well below the GVWR. What would you guys and girls on this forum run for psi in your tires if you were in the same tire as me.
Just looking to find out what psi to run in them.
Thanks for all the help and replies
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Old 04-05-2018, 12:02 PM   #33
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Hello all,
Need some info please about the sailun tires but I’m a little confused I have a 17 Montana 3661 RL with 2 axles. There is 2 tires per axle. 4 tires total. They are the sailun s637 235 80 r 16. I have the stock suspension on the 5er I believe it is the 3000 moryde? I do not know the weight on each tire but empty weight of 5er is 13200 give or take a few pounds and the GVW is 16600 give or take. I have looked up the sailun chart and searched on this forum and it calls for 110 psi per tire. Is this a standard psi to run in each tire or will it vary depending on how much the 5er weighs at the time? I’m not sure total weight of 5er at this time but it should be well below the GVWR. What would you guys and girls on this forum run for psi in your tires if you were in the same tire as me.
Just looking to find out what psi to run in them.
Thanks for all the help and replies
Jon and suns
The Sailun you mention have a 4080# per tire at 110 psi. I would run that. I have the 235/85 with a 4400# rating at 110 psi. I run them at 100#. Sailun provides a weight/psi chart available stating the 235/80 can be run as low as 80# psi and would equal a LR E tire instead of LR G.
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Old 04-05-2018, 12:13 PM   #34
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The Sailun you mention have a 4080# per tire at 110 psi. I would run that. I have the 235/85 with a 4400# rating at 110 psi. I run them at 100#. Sailun provides a weight/psi chart available stating the 235/80 can be run as low as 80# psi and would equal a LR E tire instead of LR G.
Thanks for the response but what you said is exactly what is so darned confusing. At 4080 rating per tire does that mean total weight of 16320 tires should be 110. If yours are 4400 why do you run 100 psi. If my GVWR is 16600 and I’m at full weight wouldn’t my tires in total be overloaded?
4080 times 4 = 16320. Should I adjust my psi based on total loaded 5er weight or just run them at 110 all the time?
I know this sounds like a dumb question but just trying to wrap my head around all this and run the best safest psi to get the longest life I can from the tires
Thanks for your reply
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Old 04-05-2018, 12:21 PM   #35
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You are forgetting to subtract pin weight from the GVWR. So axles really only carry about 16600 x 85% max.
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Old 04-05-2018, 12:27 PM   #36
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Jon,

You need to subtract pin weight from your total trailer weight to determine how much weight you are putting on your axles and tires. If your GVWR is 16600 and you have a hypothetical pin weight of 3000 then your are only putting 13600 on the tires. The weight on individual tires will also vary some depending on how you load your trailer. There is no real downside of running 110 psi vs something a little lower. I would inflate yours to 110.
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Old 04-05-2018, 12:34 PM   #37
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......RV manufacturers chose to use the lowest priced tire they could find......why the Sailun tire if as good as or better than the G614 is almost half the price.
I think this has been discussed in the various Sailun threads. As I understand the history, the 637 was an all-position tire (with a different label) typically used in the delivery service industry. For import purposes (and probably financial, too), the tire was rebadged as an ST tire, and because it's labeled thusly, it has to conform to US standards that it only be used for trailers. If you look closely at the tire, it looks very similar to typical light truck highway tread tires.

Another reason the tire is priced low, and this is my opinion only, is that Sailun is trying to make a dent in ST tire sales. One might call it dumping. Based on what I've seen, and the fact there has not been one single anecdotal complaint about Sailun tires, they're selling a lot of tires. I'll bet we start to see the price go up in 2019.
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Old 04-05-2018, 12:35 PM   #38
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Jon,

You need to subtract pin weight from your total trailer weight to determine how much weight you are putting on your axles and tires. If your GVWR is 16600 and you have a hypothetical pin weight of 3000 then your are only putting 13600 on the tires. The weight on individual tires will also vary some depending on how you load your trailer. There is no real downside of running 110 psi vs something a little lower. I would inflate yours to 110.
Thanks to all that replied. I did not know to subtract pin weight from total weight. 110 per tire for me. Thanks again for all the replies. This forum has been very helpful to Susan and I as basically newbies with a 5er and I appreciate all the help
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Old 04-05-2018, 12:51 PM   #39
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Thanks for the response but what you said is exactly what is so darned confusing. At 4080 rating per tire does that mean total weight of 16320 tires should be 110. If yours are 4400 why do you run 100 psi. If my GVWR is 16600 and I’m at full weight wouldn’t my tires in total be overloaded?
4080 times 4 = 16320. Should I adjust my psi based on total loaded 5er weight or just run them at 110 all the time?
I know this sounds like a dumb question but just trying to wrap my head around all this and run the best safest psi to get the longest life I can from the tires
Thanks for your reply
No, not any dumb questions. I run mine at 100 because I have the 85 and not the 80. If I had the 80 I would run them at 110. The 85 at 100 is about the same as the 80 at 110. I'd run them at 110 all the time. They run cooler and have less sidewall flex at 110 cold. Best wear and strength at full psi
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Old 04-05-2018, 03:56 PM   #40
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Ok. Just looked at the rims and there isnt a max psi. Only a weight and it says 3750 max load the rims are oem aluminum 8 lug 7 spoke. So 3750 max means 110 psi? So ok to go too sailuns?
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