Load range E--ST Tire

Bob2952 wrote:
Just bought my first RV. It's used with 2yr old tires.
I'm planning a long trip and all the talk about the tires is confusing. My travel trailer is 28ft with dry weight of 6000 lbs.
The tires say maximum cold tire pressure is 80 psi.

Because the tires are ST are they safe to use with 80psi and an average speed of 60mph? Everybody has opinions but I would like to know if anybody has the same tires with good results?
Thank you

If the tire is rated at 80 PSI COLD then yes it's safe to run them at 80 PSI COLD. Cold means first thing before you pull the trailer. the tires will heat up as you drive and that will increase the PSI. That is normal and expected. The engineers have figured that expansion and pressure increase into their design. Never let air out of a hot tire to bring it back to the Max Cold rating on the sidewall. If you do that then you will be underinflated when the tire is cold.

Same thing with your car tires and the pressure rating on the sticker on the drivers door jamb. The rating on the sticker is for a cold tire not a hot tire. Don't let the oil lube guy let air out of your tires to bring them down to the sticker pressure. If so you'll be underinflated when cold.