Not to beat a dead horse but I am a little confused after reading many threads on the subject. I am running the Sailun S637 G rated tire with a max PSI of 110 which is what I have been running. I have read that many many people are running G rated tires at 100 or even 90PSI which lowers the tires max rating. I am confused as to why I would want to lower the inflation in the tire. Why would I not want want as much weight carrying as possible? What is the advantage to running a lower inflation?

I'd run them at max pressure like you are doing.The reasons for less (so I have heard) are:> Less wear on the tire...maybe.> Better ride...who cares, no one is riding in the trailer anyway.

downtheroad wrote:I'd run them at max pressure like you are doing.The reasons for less (so I have heard) are:> Less wear on the tire...maybe.> Better ride...who cares, no one is riding in the trailer anyway.I run at max as well. less pressure means more sidewall flex.. which causes heat.. heat is bad.. I'll pass

Less chance of damage from road hazards with lower PSI and your trailer cares how hard it rides - things break and fall off faster.If you set it to the proper pressure for the weight you also have the correct tire patch for the maximum amount of traction, i.e. less susceptible to cross winds.

downtheroad wrote:I'd run them at max pressure like you are doing.The reasons for less (so I have heard) are:> Less wear on the tire...maybe.> Better ride...who cares, no one is riding in the trailer anyway.If you need the full load capacity, run at full pressure.If you are using about 90% or even as little as 80% of the carrying capacity, then lowering pressure gives the tire a BETTER contact patch on the road!! That could be VERY IMPORTANT during heaving braking!!If a tire is overinflated for the load it is carrying it will have less contact with the road, same is true if under inflated, it is NOT one pressure fits all.

Dennis M M wrote:Less chance of damage from road hazards with lower PSI and your trailer cares how hard it rides - things break and fall off faster.If you set it to the proper pressure for the weight you also have the correct tire patch for the maximum amount of traction, i.e. less susceptible to cross winds.X2. Tire mfg. have charts for specific PSI ratings for weight and tire combinations.

110psi tire question... | Good Sam Community

Hondavalk
Explorer II
Sep 17, 2014
Dennis M M wrote:
Less chance of damage from road hazards with lower PSI and your trailer cares how hard it rides - things break and fall off faster.

If you set it to the proper pressure for the weight you also have the correct tire patch for the maximum amount of traction, i.e. less susceptible to cross winds.

X2. Tire mfg. have charts for specific PSI ratings for weight and tire combinations.
rhagfo
Explorer III
Sep 17, 2014
downtheroad wrote:
I'd run them at max pressure like you are doing.
The reasons for less (so I have heard) are:

> Less wear on the tire...maybe.
> Better ride...who cares, no one is riding in the trailer anyway.

If you need the full load capacity, run at full pressure.
If you are using about 90% or even as little as 80% of the carrying capacity, then lowering pressure gives the tire a BETTER contact patch on the road!! That could be VERY IMPORTANT during heaving braking!!
If a tire is overinflated for the load it is carrying it will have less contact with the road, same is true if under inflated, it is NOT one pressure fits all.
Dennis_M_M
Explorer
Sep 17, 2014
Less chance of damage from road hazards with lower PSI and your trailer cares how hard it rides - things break and fall off faster.

If you set it to the proper pressure for the weight you also have the correct tire patch for the maximum amount of traction, i.e. less susceptible to cross winds.
sdetweil
Explorer
Sep 17, 2014
downtheroad wrote:
I'd run them at max pressure like you are doing.
The reasons for less (so I have heard) are:

> Less wear on the tire...maybe.
> Better ride...who cares, no one is riding in the trailer anyway.

I run at max as well. less pressure means more sidewall flex..
which causes heat.. heat is bad.. I'll pass
downtheroad
Explorer
Sep 17, 2014
I'd run them at max pressure like you are doing.
The reasons for less (so I have heard) are:

> Less wear on the tire...maybe.
> Better ride...who cares, no one is riding in the trailer anyway.

Forum Discussion

110psi tire question...

About Fifth Wheel Group

Related Content

Tire chains questions

Tire Wear Question

Tire questions

Toyo Tire question

Another tire question