What does "MAX" psi on tires mean?

[WDPatterson]

Yes it could be larger print on your Certification Label. I suggest you complain to the regulatory agency NHTSA.

Like so many other things which have been compromised, in our country, this is just one more which threatens the safety of American citizens.

Nothing justifies making what we already knew to be good messages no longer available on foreign made tires.
Is this showing up on all brands of tires, or just some?

 

[flybouy]

It's good that a newlywed takes part in social discourse. I will be punching 53 years of wedded bliss here shortly unless my missus decides to find a younger guy more able to perform household repairs and chores that this decrepit old boy.

Like most men, I married above me in every way. She doesn't read this forum so my are from the heart without seeking any advantage. We've been wed for 44 yrs but together for nearly 49 hrs. I've been incredibly blessed that we found each other.

 

[Crusin']

@Tireman9
I read where some people inflate to cold psi and some people use the tire inflation tables for their particular tire.
In my case, I have Goodyear endurance st225/75/r15e tires. Cold psi on the tires says 80 psi. From the cat scale, the trailer weighs 7620 lbs. I add 10% to be on the safe side which brings the weight to 8382 lbs. Devide by 4 is 2095 lbs. According to goodyears tables, I should inflate to 60psi. So, in your opinion, is it 60psi or 80 psi or maybe split the difference at 70?
Thank you.

 

[JRTJH]

@Tireman9
I read where some people inflate to cold psi and some people use the tire inflation tables for their particular tire.
In my case, I have Goodyear endurance st225/75/r15e tires. Cold psi on the tires says 80 psi. From the cat scale, the trailer weighs 7620 lbs. I add 10% to be on the safe side which brings the weight to 8382 lbs. Devide by 4 is 2095 lbs. According to goodyears tables, I should inflate to 60psi. So, in your opinion, is it 60psi or 80 psi or maybe split the difference at 70?
Thank you.

I've never seen a trailer with equal weight on all four axle positions. There's potentially a significant difference in loading on each end of an axle. For instance, a heavy slide with a large gas/electric refrigerator in it on one side and no slide, just a table and chairs on the other side... So, weighing, dividing by two, to get each axle, then dividing by two again to get each side is more an illusion of tire weight on each end of the axle than it is anything close to reality.

That said, if 60PSI gives you a 10% safety margin and 80PSI gives you a 30% safety margin, if you have not had any issues with uneven tread wear, why would you opt to reduce your safety margin?

 

[Crusin']

I do inflate to 80psi. My trailer came from the factory already 140 lbs heavier on the passenger side. I'd bet now it's probably 300-400 lbs more now as most storage inside is also on the passenger side. Just was wondering which was correct. Thanks.

 

[Cajun Couple]

I run 80 psi cold in the Goodyear Endurance tires on our 25RDS Cougar. Never had a tire problem even with our extremely hot Louisiana highways. Keeping speeds in the 60 mph range helps also.

 

[Gearhead]

No harm, but to get any advantage of higher Load Range you will need to increase inflation above 50 psi.
Have you been on a truck scale to learn your actual weight?
With that number you consult the tire industry Load/Infl tables to learn your MINIMUM cold inflation.
I recommend you inflate to that minimum plus at last 5 psi

Be careful upgrading tires with a higher Load Range. They will likely require higher air pressure.
Look on the backside of your wheel and somewhere will be stamped a spec for max PSI or LOAD RANGE. I talked to an Engineer at TREDIT who told me the wheels would crack around the center if over pressured.