Load capacity of my wheels

[ShawnR]

I learned something and wanted to share.

I put new tires on my 2012 Eagle Super Lite 266 RKS yesterday. Goodyear Endurance 225/75r15 E, $540 OTD with $130 in rebates coming. The tire shop manager told me I could inflate to 80 and I doubted him due to rim limitations...so we looked. My rims were stamped Max Load 5/2150&6/2830. What that means is my 6 bolt wheels can hold E loads and the pressures associated. Good thing they installed high pressure valve stems!

Footnote: I am still going to inflate to 65 since that tire's load carrying capacity is 2540 lbs at that pressure. My TT weighed 7500 last week with 1100 of that on the tongue.

file:///C:/Users/Owner/Downloads/Goodyear%20rv_inflation.pdf

[TWP723]

Cool! Thanks for sharin'!

[sararook]

Trailer tires are designed differently than tires for cars and trucks. They must be aired to max. The sidewalls will fail. If they say 80 max then put 80 in them. They run hot I not inflated properly. You loose fuel mileage having them under inflated also.

[sararook]

Special trailer tires should be inflated to their maximum air pressure. The value for the maximum air pressure should be listed along with the value for the maximum load on the tire's sidewall. These values will usually designate the maximum load at a maximum psi. For example, if the tire is rated at 1,610 lbs maximum at 65 psi, the tire can carry 1,610 lbs of weight if the air pressure is at the maximum of 65 psi. At the maximum air pressure, the tires will perform and wear best, and get the best gas mileage.

[sararook]

That last post from Etrailer web site. I used to run my tires under inflated too. All the experts and tire companies say don't do it. So I put the maximum in them now!

Also a common mistake is to leave them on too long. I found this out the hard way. Just because they have lots of tread on them does not mean they are still good. 7 years max. I change mine every 5 years. It really sucks tearing up the side of your trailer on I-10 in the middle of New Mexico in the middle of August when it's a 110°. It REALLY sux! I'll never forget that day. I thought I was going to killed either from traffic or heat stroke. Those tires had plenty of tread and were inflated properly. They were 9 years old.

[Murff]

Originally Posted by sararook

Special trailer tires should be inflated to their maximum air pressure. The value for the maximum air pressure should be listed along with the value for the maximum load on the tire's sidewall. These values will usually designate the maximum load at a maximum psi. For example, if the tire is rated at 1,610 lbs maximum at 65 psi, the tire can carry 1,610 lbs of weight if the air pressure is at the maximum of 65 psi. At the maximum air pressure, the tires will perform and wear best, and get the best gas mileage.

If this statement is true, and you are only carrying say 1500 pounds per tire or less, would your tires not be overinflated?

I ask because this would mean Goodyear's own inflation chart is in error?

I believe I will leave my tires inflated at 45 pounds and not at 65 psi.

[Iraqvet05]

I ran my Towmax tires at 40 PSI for 3 years before realizing they should have been at 50. I’m very close to purchasing a set of Goodyear Endurance tires but they only come in D load whereas the Towmax are C.

I need to take a trip to the storage lot and see if the rims are stamped where I can read them.