Tire Pressure for G Load Rated Tires

[glendodom]

Our 2018 3721RL, it came with G loadvrated Sailuns. Lot of negative posts about Sailuns, but I got five good years out of them. In 2023, they were still looking good but based on the five year rule I replaced them. Now with less than three years and low mileage usage, I recently threw a cap on one of them and replaced a second one since it’s normal flat tread surface was all rounded out like a bicycle tire! I put G rated back on but the tire shop only put 80 psi in it noting I probably had the tires over inflated at 110 psi. Who am I to argue with a tire who suppose to know their business. I ran those two tires for roughly 500 miles based on his advice and ended up with outside wear. Now I am back at 110. I should have followed my knowledge and instincts versus a tire show. After this experience, I sure could not fuss about Sailuns performance.

 

[DutchmenSport]

On the back side of the tire rim, stamped in the metal displays the max tire pressure for that rim. On the sidewall of the tire is stamped a max PSI. Use the lesser of the two as the pressure you should use. But use the max for the lower pressure. If they are both 110, then you are good.

 

[jsb5717]

Sailuns are generally good tires and highly recommended on this and other forums. The G tires are rated for 110psi as stated. You can run them at less but that's dependent on the GVWR of your trailer. I tend to run mine at about 105psi. I'm on my 2nd set and have high confidence in their durability.

 

[Thebricklayer]

Sailuns are generally good tires and highly recommended on this and other forums. The G tires are rated for 110psi as stated. You can run them at less but that's dependent on the GVWR of your trailer. I tend to run mine at about 105psi. I'm on my 2nd set and have high confidence in their durability.

I too am a fan of Sailun and run mine at 105 psi as well.

 

[Daryles]

I also run our Sailuns at 105psi.
I would like to give the rig a little softer ride.
I also Balance the tires before a road trip (annually).

 

[ChuckS]

I run S637 Sailuns ( size ST235/85x16 ) for my 34 foot Alpine... No need for 110 psi ( which I ran for a year ) and then dropped to 95 psi based on email from Sailun and using tire weight inflation chart... I had always run max cold psi on my G rated tires ( even my last set before Sailuns were available )....

On my forth season .. tires are wearing evenly from inside to outside rib...

Sailun S637 series tire is an excellent RV tire with an excellent track record history compared to most other brands of RV tires out there

YMMV

 

[Theunz]

Generally low air pressure will wear the outside edges while high air pressure will wear the middle. This assumes that the alignment is correct. I agree with the others that you would be better served by running 95-100 psi. However in very hot long distance hi-way driving you might go up to 110 psi to help keep the tires cooler.

 

[Majorpolk]

I am on my second Montana running Sailuns and my 4th set of the tires. Always run at 105. We monitor with TPMS. Very satisfied. I have had one flat from a big nail. It was in the side wall and was about at the 4 year mark, so I replaced all 4 tires. We full time now so I don’t skimp on safety. 2021 3781RL.

 

[shiggs]

Our 2018 3721RL, it came with G loadvrated Sailuns. Lot of negative posts about Sailuns, but I got five good years out of them. In 2023, they were still looking good but based on the five year rule I replaced them. Now with less than three years and low mileage usage, I recently threw a cap on one of them and replaced a second one since it’s normal flat tread surface was all rounded out like a bicycle tire! I put G rated back on but the tire shop only put 80 psi in it noting I probably had the tires over inflated at 110 psi. Who am I to argue with a tire who suppose to know their business. I ran those two tires for roughly 500 miles based on his advice and ended up with outside wear. Now I am back at 110. I should have followed my knowledge and instincts versus a tire show. After this experience, I sure could not fuss about Sailuns performance.

The correct tire pressure is based on the weight carried by the tire and the tire manufacture’s weight/inflation table for the specific load range. Heat expansion is already factored in.

 

[rubio171]

I had great luck with my Sailuns and ran them at 110. I have recently swapped to some Hankook Vantras and I run them at 110 as well

 

[rpkittle1]

I never inflate my tires to the full amount. Inflate them for the load. I run my G rated tires at 80 psi.

 

[firetrucker]

Why do we ignore what the tire manufacturer tells us? They really do know what they are talking about. Find out what each tire's load is and use the inflation tables to determine what pressure they should carry. The pressure on the sidewall is for the maximum load the tire can carry, and if you're at the maximum load, you should go to a higher load range.

 

[mdpcjjjj]

I run mine at 105 cold. The pressure usually increases to about 115 to 120 when warmed up.

 

[Mikelff]

I have had 2 sets of Sailun and had great experience with both. Sailun did have a recall a few years back but for a narrow production date range. That’s the only negative I have ever heard about them. I now am trying out a set of Carlisle’s which also have great reviews. My tires are G rated and run them at 107-109 lbs. At lower inflation you may be able to carry your load but you will have more outside and inside wear, run hotter, and more roll resistance which decreases gas mileage. At my higher inflation I never have to worry about any of that, or my load.

 

[Mark77]

I am replacing my E rated tires with G rated tires, just for the comfort level but I will not run them at the max 110 PSI. Per Sailuns chart and my loaded weight I am going to start at about 85 PSI and watch them for wear patterns.

At lower inflation you may be able to carry your load but you will have more outside and inside wear

If you run 110 PSI when you only need 80 - 90, you are going to carry more load on the center 1/3 of the tire instead of spreading it across the entire face of the tire.

Point of interest... I just replaced my E rated Hercules tires that were inflated to 80 (rated) when I removed them and when I sat the rig on the new Sailun G rated tires inflated to 90 (80% of rated pressure) there is less tire "squat" on the Sailuns than there was on the fully inflated Hercules E rated tires.

 

[TWC84]

I know this post is a few months old, but was looking for some input. I'm looking at Sailun ST235/80R16 tires to replace my 5-year old Sailuns (14-ply, G rated). I'm shopping on Simpletire and don't see the G rated Sailuns. I can only find H rated (16-ply) Sailuns. I'm no expert on tires and have had no issues with my past two sets of Sailuns. Any issues with running the H rated Sailuns?

 

[TWC84]

Update - I did find the 14-ply, G rated Sailuns at Tires Easy online. Anyone have experience buying tire from them?

 

[Mark77]

I bought my set on Amazon.

 

[Carl n Susan]

Apparently Sailun has discontinued the G rated tire and replaced it with a H rated one. You can still find G Sailuns at re-sellers but they are getting less available. There was a discussion here earlier about the H rated Sailun.

Best RV tire and tire monitoring system

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