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View Full Version : Fixin to buy Sailun S637s


Ford350man
07-09-2018, 09:47 AM
Need some advice from fellow Monty owners. When I acquired my 2006 3475RLS in 2015, the dealer put new 235x80R16 Transporter tires on it. No doubt they were China bombs. Had a blow out a year ago with minimal damage to the trailer fortunately. My local tire dealer talked me into a set of Trailer Kings. Didnít do enough home work when I bought them. Only, 3000 miles later I was losing air and found two small bubbles on inside of the tire before leaving on a 1000 mile trip. Dealer replaced it without cost so far. I lost all confidence I had in them. After readin all the posts from yaíll, Sailuns seem to be the recommended tire(even though China made). The small print on these 235x80R16s (4,080 lbs at 110psi) recomends high pressure wheels. Here is my question- Are my current wheels adequate based on the following or do I buy new wheels also? Trailer GVW is 14,000. Two 6000 lb axles. Hitch weight is 2435. Total weight on axles of trailer is 10,540. Actual weight on left front trailer tire is 2900. Weight on the other three tires is a lesser amount. My wheels are 3750 lbs max rated. Can I safely install the Sailuns on these wheels at 110 psi. I am definitely under loaded. Any suggestions?

Carl n Susan
07-09-2018, 09:53 AM
No your wheels are not suitable for 110 PSI but that shouldn't stop you from installing the Sailuns. Download the Sailun Load Inflation Chart from http://www.montanaowners.com/forums/downloads.php?do=file&id=15
and you will see 80 PSI is adequate for your axle/tire load.

AZ Traveler
07-09-2018, 10:33 AM
Ford,

Check the back of your wheels, they should be labeled with max PSI. Agree with Carl, even at 80 PSI they are still good tires.

Eagleback
07-09-2018, 11:29 AM
My wheels are the same as ford350man 3750 max pounds. My rims do not show a psi rating. Looking at the chart 235-80-r16 it shows on the duel wheels 3640 lbs at 110 PSi is that not in the range of the current rims we have?. Just checking as im ordering sailuns also.

DQDick
07-09-2018, 12:22 PM
To find the pressure limits on wheels you have to crawl under and look at the back side, but the OEM wheels on a 2006 would have been 80#. 110# wheels started somewhere in the middle of the 2010 model year.

Carl n Susan
07-09-2018, 12:30 PM
Eagleback: I believe you should be using the single wheel chart, not the dual wheel one. You have a single wheel om the end of each axle rather than duals (like a dually truck v. a SRW one). Both the 80 and 85 aspect tires are rated over 3,000 lbs. at 80 PSI which is the limit for 2006 era rims.

Eagleback
07-09-2018, 12:35 PM
OK. I only have a weight not a PSI showing. I even removed the rim and no go on the PSI. so 3750 would only be 80 PSI or maybe 90 PSI max to the 3750 load?

Carl n Susan
07-09-2018, 12:49 PM
While your wheels have a max rating of 3,750 lbs. there is no way your actual load will approach that value. You have 6K rated axles and should only to expect that amount of weight. But of course you should weigh the axles to see what your actual load is. I bet it is less than 3,000 lbs. per wheel or 6K per axles. 80 PSI will handle your load easily.

BuilderBob
07-09-2018, 12:50 PM
You wont regret running the Sailuns even at 80# they are more tire then the trailer kings that you have I would not run much more than 80# in them you can brake a wheel but you can up grad the wheel at the same time to run the higher tire pressure if you have the bucks to do so.

Ford350man
07-09-2018, 02:26 PM
Thanks to all of you for your quick replies. My wheels only state the 3750 max weight(made in China of course). What I am hearing is these are 80# wheels not safe for 100-110. I was concerned about whether to run the G rated (4080 psi@110#) Sailuns at 80 without damaging them or maybe running hotter than if at 100-110. Iím obviously willing to put enough money in this new setup to provide less risk of a blowout than having to pay thousands in damage to the trailer plus loss of use in the shop. I really appreciate all your advice. Thatís the benefit of this forum.

bigred715
07-09-2018, 04:55 PM
Took one wheel off my 3000RK built in 2010 and they were 3750# and 110psi.My trailer weight on the wheels is under 10000# Should be fine when I buy the new Sailuns when they come on sale.

mazboy
07-09-2018, 05:54 PM
your wheels can accept G rated tires at 110psi. you are not hearing that they won't, don't even start that rumor.


'you put G rated tires on your wheels you can go up to 110psi. 'A "G" rated 235/85R16 has a rating of 3750 @ 110psi.

read a comment on etrailer. https://www.etrailer.com/question-29672.html


and rule of thumb is to:' Trailer tires should always be inflated to the maximum psi listed on the tire to avoid excessive heat build up and failure'

Mike117
07-09-2018, 06:46 PM
I had very little mileage on Towmax tires but after reading all these tire threads changed to Saliun. Keystone said my 2014 had 110 psi rims. Long story short could not find any psi stamped anywhere on the rim. Still put the Saliun on and will run them at 80 psi. One thing of interest. I checked the tires all the time and they had maybe 10K on them. Les Schwab said I had a bubble on one of them and it was only time before a major problem. I never noticed a bubble and climbed under the trailer all the time to check. Thanks to all for the continue education.

Garybricker
07-10-2018, 04:52 PM
Where is the best place to buy Salium tires in the Dallas area

Texan
07-10-2018, 10:28 PM
I don't know about the Dallas area but you can order them from simpletire.com and have free shipping and no sales tax. It takes about 3 days to receive them and you can take them to just about any tire shop for install. If you watch the simple tire web page you will probably find them for 10% off pretty shortly. I doubt anyone will beat simple tire.

Texan
07-10-2018, 11:22 PM
I had very little mileage on Towmax tires but after reading all these tire threads changed to Saliun. Keystone said my 2014 had 110 psi rims. Long story short could not find any psi stamped anywhere on the rim. Still put the Saliun on and will run them at 80 psi. One thing of interest. I checked the tires all the time and they had maybe 10K on them. Les Schwab said I had a bubble on one of them and it was only time before a major problem. I never noticed a bubble and climbed under the trailer all the time to check. Thanks to all for the continue education.

I have an 2014 and my wheels are rated at 3750# which i believe all 2014 wheels are rated at 3750#.Inflate to 110psi to get the maximum benefit and if not the 3750# wheel then you need to use the Sailun chart for the maximum pressure. As Carl stated you can run 80psi on Sailuns if that is all your wheels will handle. I bought a set of aluminum modular wheels at Star Craft Distribution that are rated at 3960# each for 99.00 each plus shipping after breaking 2 of the factory wheels. I bought the size 16x7 8x6.50HD. These wheels i installed the Sailun 235x85x16 tires.

Garybricker
07-11-2018, 02:50 PM
Thanks. On my 2015 36rl I have about 40 K on my Goodyear s. Thinking about buying some soon. No problems

richfaa
07-11-2018, 04:03 PM
Thanks. On my 2015 36rl I have about 40 K on my Goodyear s. Thinking about buying some soon. No problems

We had 40K perhaps a bit more on our Goodyear G614s. They had legal thread depth looked good but were 5 years old on a 2013 3402.

Replaced them. Safety first.

paul01
07-11-2018, 04:13 PM
I have had Sailuns on mine for 2 years, run 110 psi tires have worn well lot of tread left. About 8,000 mi on them and they still look good. I keep them covered when not traveling. fuel

JWSwick
07-15-2018, 02:30 PM
No suggestion... getting ready to get new tires too and would love to hear recommendations!

paul01
07-15-2018, 03:06 PM
Sailuns are great tires for a fiver. mine have worn well and I have had them for 2 years with no trouble. took a trip up 81 north the road was very rough almost like off roading. No trouble at all. the trailer handled well. throughout the whole trip.

sdetweil
07-15-2018, 03:06 PM
I just replaced my G614's with Sailun S637's, $514 shipped to my house from Simpletire.com via eBay item.

The date code on the 614's was July 2012, bought trailer Sept 2013.

Ford350man
07-15-2018, 05:02 PM
I just bought mine from simpletire for $137 ea this week.

Ford350man
07-15-2018, 05:08 PM
I live in Springtown and I just got mine from simple tire. Ordered on day 1 and got them day3. One week they were $158 and this week $137 so I bought five. Free shipping.

Klonerama
07-15-2018, 07:58 PM
I believe that if you look online at rims rated for 110# they will have 8 lugs and 80# rims will have 6 lugs.

Need to get new axels to go 110# if yours are 6 lug

chieflawdawg
07-15-2018, 07:59 PM
Just put a set of Sailuns on our 2013 3100RL. It has the 110# wheels on it. My tire guy only inflated the new tires to 80#. I asked why he didnít inflate to 110# and he said that the weight of my trailer didnít need the higher pressure. That it would cause it to bounce more. Just got back from 600 mile trip to TN and I must say that my 5íer rode as smooth as I have ever felt it. I got home and noticed one of the tires looked slack. Check showed 55# in it. Inflated back to 80# and it hasnít lost any in last week. Donít know what caused the loss in pressure but will keep a check on it. I must say that I am really liking the Sailuns so far. I went with the 235/85R16s and they fit well. I had always run the Firestone Transforces before on both of my Montes and never had a problem.

Ford350man
07-16-2018, 06:47 AM
My 2006 Monty came from factory with 3750 lb 8 hole rims at 80 #. I have two flat beds: one has 6 hole 3200 lb rims at 80 psi and the other has 8 hole rims rate 3500 lbs also at 80 psi. All have 235x80r16s. When I bought my Sailuns I went ahead and bought 8 hole heavy duty rims to run 110 psi. Probably didn’t have to, but It gave me peace of mind. I have less than 12000 lbs on my two 6000 lb axles. Thanks though. I love this forum.

Texan
07-16-2018, 08:25 AM
Sailun's are 15% off thru 07-18-18 at Simple Tire. You want find them any cheaper anywhere.

Geostef
07-16-2018, 08:57 AM
so what type of compressor are people carrying to get their Sailuns up to 110 pounds of pressure?

BuilderBob
07-16-2018, 09:16 AM
I have a VIARE-450RV works great and does not take up a lot of space!

DebNJim B
07-17-2018, 12:46 PM
Thanks for all the great tire info. I had never heard of Sailuns until I took delivery of my Monty. Wasn't sure about them especially when Goodyears were offered as an option. Now I'm happily "Sailun" down the road at 110psi. This forum is sooo good.

Ford350man
07-17-2018, 02:34 PM
Hey Out there. Just like Texan said a few days ago Simple Tire has their 235x80R16 Sailuns onsale for $129.99 until July 18. $7 cheaper than I bought mine last week. If youíre lookin, go get em.

Mr. C
07-18-2018, 08:37 AM
Purchased my Sailuns 637 from Simple Tire here in the DFW area. They had them at my house in less than 48 hrs. Took the wheels and tires to Discount Tire and had them mounted and balance.

I have not had the opportunity to travel like I wanted to this summer due to work but the trip we did take the tires did good. I had no worries. The tires look good and mounted good on my 2013 Montana.

I highly recommend over the Goodyear's that blew the side of my trailer out last November and any other China bombs.

Ford350man
07-18-2018, 11:14 AM
Glad to hear. Getting mine mounted at Discount Tire tomorrow.

suny07
07-18-2018, 06:19 PM
Flash Sale on simpletire.com ends TODAY

15% OFF USE CODE: FS15

Not more to say ;)

masterdrago
07-21-2018, 01:59 PM
You wont regret running the Sailuns even at 80# they are more tire then the trailer kings that you have I would not run much more than 80# in them you can brake a wheel but you can up grad the wheel at the same time to run the higher tire pressure if you have the bucks to do so. Your inferring that his wheel might break if over 80psi is run in them. I'm curious. If he inflates to 80psi in the morning @ 30*F and drives into Arizona running 65mph in 110*F, will not he exceed the psi rating of his rims?

masterdrago
07-21-2018, 02:09 PM
Sailun's are 15% off thru 07-18-18 at Simple Tire. You want find them any cheaper anywhere. just checked. Don't even see Sailun on their brand listings

masterdrago
07-21-2018, 02:11 PM
just checked. Don't even see Sailun on their brand listings found 'em. was looking at wrong size

AZ Traveler
07-21-2018, 04:30 PM
Your inferring that his wheel might break if over 80psi is run in them. I'm curious. If he inflates to 80psi in the morning @ 30*F and drives into Arizona running 65mph in 110*F, will not he exceed the psi rating of his rims?

Max tire/rim pressure are cold pressures vice hot pressure. I believe 60 deg is the temp that is used for standards.

solidhank
08-02-2018, 08:12 AM
Ok guys need some opinions. Just bought a 2016 HC 353rl. Gonna replace the tires. Has some kind of china bombs on it. They are load range E. Opinions on going with GY Endurance E rated or the Sailun G rated? Will the Sailuns make the 5er ride a little rougher? Just don't want to cause a different kind of problem down the road. Thanks.

GAinaMontana
08-02-2018, 09:48 AM
Buy the Sailuns. When you see them, you will understand the vast difference between them and the E rated tire. When you pull your rv with them mounted you will be amazed at the improved stability.

mazboy
08-02-2018, 10:11 AM
if your wheels are rated at 3750 put 1110psi in the 'g' rated tires and be done with it.

BuilderBob
08-02-2018, 10:11 AM
Get the Sailuns they are best tires for you fifth wheel you will see the difference between the E rated & G rated tires! They won't make your fifth wheel ride rougher it will be way more stable going down the road that for sure!

paul01
08-02-2018, 01:25 PM
You canít go wrong with Sailuns.:)

AZ Traveler
08-02-2018, 01:28 PM
if your wheels are rated at 3750 put 1110psi in the 'g' rated tires and be done with it.

That is probably a little more pressure than the tire will handle.

solidhank
08-02-2018, 03:19 PM
Ok guys, thanks. Ordered 5 from simpletire on e-bay. 10% off thru 8/4.

DebNJim B
08-03-2018, 05:07 AM
OK, so my Montana handles so much better than the sob I traded in and I thought is was the way the Monty is balanced, but now I'm thinking it's the Sailun tires. Either way I'm lovin' it.