All steel 236/85/R16 LRF

JIMNLIN wrote:

Explain why derating is not an option. and why is over tire a bad thing. I would rather be a bit over tired then close to the tire rating.

The last sentence in that reply answers your question.

This rv owner found out from actual experience what we talk about when a trailer is over tired.....

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Posted: 04/27/17 08:01am Link | Quote | Print | Notify Moderator
When it came time for me to replace our tires, I researched many different ways to go. I wound up purchasing 17.5" J rated medium duty truck tires and wheels. When all done and said, it was $5.00 per wheel and tire combo more than just replaceing the 16" tires. This tire and wheel combo is good for 6005 pounds each. Using the inflation chart to get the pressure for the load, I inflated to 80 psi which was good for 4500 pounds per tire. With the first tow with these tires to Kansas City, I have made this trip to the speedway several times before, I was down almost 2 mpg both ways. The tires were 20*-25* hotter than the truck, which I have never experienced before. I inflated them to the side wall pressure, 125 psi for max load, before our trip to Florida. Now the tires run 5*-10* cooler than the truck and my fuel mileage is back where it used to be. I have always run max pressure up until I installed these tires, with what I have experienced, I will continue to run what the side wall indicates.

Thanks for the reply . His solution was to air up, does not sound like he was unhappy after that. I have no way to compare. I haven't run a TPMS until last year, although I have ran it with two different fifth wheels ,same tire. Pretty much the same weight. I run my Sailuns at 100 psi now. Max is 110 psi. Both fifth wheels ran about the same temperature, and my mileage is the same.

I run the Sailun ST 235/85/16's, I don't need the 4400 lb. rating, but did want the little extra height. The ST 235/80/16 @ 4080 would of been okay. I have no idea what makes the Sailuns different in weight rating between the two, they appear to be constructed the same, I would guess just being a different size ?? Both 110 psi max inflation.

My whole point has been if he wants an F rated tire, he might as well go to a G rated ,and get the best tire . G is going to be easier to find, more selection etc. Will E work ,sure it will. Its his choice. He could run those Sailuns at around 90-95, and not have a problem. I'm running mine with 100, and no problems . His weight on the tires are not going to cause any issues .