Best RV tire and tire monitoring system

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Members widely recommend Sailun tires for heavy fifth wheels, with many reporting years of trouble-free use, especially when purchased online and installed at local shops. However, some caution about recent manufacturing shifts (from China to Vietnam and now Cambodia), noting a recall and quality concerns with certain batches. The latest Sailun S637 tires are now Load Range H (16 ply, 120 psi max), replacing the older G-rated (14 ply, 110 psi) models. Members stress the importance of...
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Go look on the tire you will see, it's going have either 14 or 16 PR. On mine they are 14 , it's stenciled on the tire 14, with "PR" underneath it .
 
It's easy to tell there will either be 14 PR or 16 PR on the tire , easy to see , that meaning ply rating , along with a bunch of inflation , and weight ratings for single , and dual wheel application . They can't be a 14 ply H rating , H rating is 16 ply G rating is 14 ply . It's going be on the tire 14 or 16 PR
Yes I found it they are Load Range H 16 PR
 
As far as those numbers go 133/128m , the 133 means load index of 4541 lbs for single wheel application , the 128 means load index of 3968 lbs for dual wheel application both for 120 psi inflation , which means thats their max ratings for the two applications . The M means is has a speed rating of 81 mph . your tires are definitely H rated Sailuns .

It appears on the Sailun website , Sailun no longer makes a G rated S637 in either the 235/80/16 , or the 235/85/16 . We are going to get H rated from now on ,unless you happen to find an older set from a retailer . You appear to have gotten the latest ,and greatest from Sailun . :)
 
As far as those numbers go 133/128m , the 133 means load index of 4541 lbs for single wheel application , the 128 means load index of 3968 lbs for dual wheel application both for 120 psi inflation , which means thats their max ratings for the two applications . The M means is has a speed rating of 81 mph . your tires are definitely H rated Sailuns .

It appears on the Sailun website , Sailun no longer makes a G rated S637 in either the 235/80/16 , or the 235/85/16 . We are going to get H rated from now on ,unless you happen to find an older set from a retailer . You appear to have gotten the latest ,and greatest from Sailun . :)
Thank you
 
Thank you everyone for all the feedback. I have contacted Wal-Mart and they are looking into this. Like PS said Sailun no longer makes the G rated tires. I guess the new tire was so heavy it broke the plastic cable runner on the cable wench for the spare tire now I am onto that problem If anyone as any thoughts on alternatives for spare tire carrier I would appreciate it. Here is the broken part.
 

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Yes I found it they are Load Range H 16 PR

There you go . (y) Now figure out how much you want to inflate them . I think you are fine on the tires . As said get the inflation figured out . I will say you don't need that much tire ,but I sure wouldn't worry about it at this point , run them ,and enjoy knowing you got plenty of tire on your fifth wheel .
 
Thank you everyone for all the feedback. I have contacted Wal-Mart and they are looking into this. Like PS said Sailun no longer makes the G rated tires. I guess the new tire was so heavy it broke the plastic cable runner on the cable wench for the spare tire now I am onto that problem If anyone as any thoughts on alternatives for spare tire carrier I would appreciate it. Here is the broken part.
Yikes , yes they are a heavy tire . I too bought 5 of them , one for the spare . My carrier underneath is mechanical so to speak , the tire lays on it ,and you physically have to lift it into place ,and latch . No cables , but the previous spare was a 238/80/16 G rated , lighter , and smaller . I could lift it into place ,and latch , this one I could not get enough leverage to do so , plus I am getting older . :) The main thing is I can get it down if needed , and Iwill just have someone latch it when I lift it back in place .

Looks like you are going to have to figure out a better spare carrier or replace the broken part , and hope it will hold up .
 
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I like the idea of the spare tire carrier I have . It's two arms that the tire lays on ,and then lifted up in place ,and latched . Not a fan of the cable system at all ,big thing the cable can break . Pretty sure I have read that somewhere . Best case it breaks pulling the spare into place ,and not going down the road . Also I believe some have put a strap on them also just in case . Mine make it a little harder getting lifted in place ,but once it is ,it's not going anywhere .
 
Looking at my Sailun inflation chart , and dividing your GVWR of 14,400 by 4 thats 3600 per tire if you are loaded to your max GVWR , but as you know not all four tires will be the same . Going to my Sailun inflation chart 3640 lbs call for 80 psi , as said I don't really want tell you what to run ,but "IF" they were mine I would be running them @ 90-95 cold . That pretty much covers your GVWR if you were loaded to the max. Now your tires are rated a bit more being H's . I just can't help to think 90-95 is plenty . I would run them ,and see how warm they get ,and I would imagine warmed up they are going to be running up around 110 -115 but just guessing from what mine do running 95 cold . Also how the fifth wheel rides .
Not so.. You forgot to subtract the pin weight from the 14,400. probably about 3000 lb. So each tire is probably around 3100 or so.
 
Not so.. You forgot to subtract the pin weight from the 14,400. probably about 3000 lb. So each tire is probably around 3100 or so.
3640 was a number I picked from the Sailun inflation chart for an example , regardless of his weights . I just can’t go by the inflation chart . If I go by my Sailun inflation chart 3060 takes 60 psi. So like 62 psi for 3100 . I don't know about you , but I wouldn' or recommend anyone to run that low of air pressure . So as said 3600 , or your 3100 , whatever ,pick a number the inflation is going to be 60 - 70 psi . So it is so , I like 90-95 for him , you got a better number ,please tell him . I have been running 95 in mine for nearly six years . He certainly doesn't need 120 with his fifth wheel .
 
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3640 was a number I picked from the Sailun inflation chart for an example , regardless of his weights . I just can’t go by the inflation chart . If I go by my Sailun inflation chart 3060 takes 60 psi. So like 62 psi for 3100 . I don't know about you , but I wouldn' or recommend anyone to run that low of air pressure . So as said 3600 , or your 3100 , whatever ,pick a number the inflation is going to be 60 - 70 psi . So it is so , I like 90-95 for him , you got a better number ,please tell him . I have been running 95 in mine for nearly six years . He certainly doesn't need 120 with his fifth wheel .
I agree 60 lb is way too low! These tires must be made of steel to support 3100 lb at only 60 lb!!!! LOL
 
I agree 60 lb is way too low! These tires must be made of steel to support 3100 lb at only 60 lb!!!! LOL
Yup , it’s crazy . I was sent the inflation chart from a Sailun sales rep . Had it on my phone now for several years , I’d be curious what the inflation’s are now considering the Sailun S637’s have gone to H rating @ 120 psi . No more G’s . Although the max weight rating only went up a little over 100 lbs . I suspect even though they are designated H they are still the same tire . I remember when the G rated got bumped up to 4400 from I believe 3750 , and from LT to ST .
 

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