Tire Pressure Recommendations

[Camper Ken]

Originally Posted by 604eholston

Camper Kem. I'm sorry, my question was not clear. I was curious as to why you didn't use the tire manufacturer's recommendations after you contacted them with your data.

I added a few pounds to the pressures recommended by Continental to account for varying weight load I might be carrying. I guess I'm thinking of the extra PSI as a safety measure. By running the tires at these pressures which are slightly less than the 61 lbs that Winnebago lists on the door jam, the coach also rides a bit better.

[604eholston]

Originally Posted by Camper Ken

I added a few pounds to the pressures recommended by Continental to account for varying weight load I might be carrying. I guess I'm thinking of the extra PSI as a safety measure. By running the tires at these pressures which are slightly less than the 61 lbs that Winnebago lists on the door jam, the coach also rides a bit better.

Camper Ken, thanks. I drive an ERA and Winnebago and Continental both recommend 61, all around. I have found 59 indeed does ride better.

[Camper Ken]

Originally Posted by 604eholston

Camper Ken, thanks. I drive an ERA and Winnebago and Continental both recommend 61, all around. I have found 59 indeed does ride better.

Anyone including me who decides on a different tire pressure than recommended by Winnebago and/or Continental does so as their own risk and must assume responsibility for such action.

[jadatis]

You 2 with Continental tires , can look for me on sidewall, if , yust as in Europe, they give psi directly behind sises without AT in front of it, and somewhere else something like " maximum inflation pressure of 10 psi higher ?

[604eholston]

jadatis, I do not understand, what is your question. If you are asking me the pressure stamped on the sidewall of the tire, that is hidden now behind my tire covers. That number is the maximum pressure to which the tire may be inflated, as I understand it.

[jadatis]

No there is a difference. The pressure behind AT as often given like this " maxload xxxx lbs AT yyy psi( cold) , is the cokd pressure for wich the max load is calculated for the reference-speed.
Max allowed cold pressure is the max the tiremaker allowes cold measured ( cold is when inside and outside tire, the temp is the same).

In earlyer days for instance, ST tires where allowed 10 psi over AT pressure for 75mh instead of AT pressure wich was for 65mh.

But nowadays the Continental groop gives both on sidewall in Europe, and I wanted to know if they also do that in America.
Other tiremakers dont allow higher then AT anymore, in earlyer days they did allow.

[604eholston]

Originally Posted by jadatis

No there is a difference. The pressure behind AT as often given like this " maxload xxxx lbs AT yyy psi( cold) , is the cokd pressure for wich the max load is calculated for the reference-speed.
Max allowed cold pressure is the max the tiremaker allowes cold measured ( cold is when inside and outside tire, the temp is the same).

In earlyer days for instance, ST tires where allowed 10 psi over AT pressure for 75mh instead of AT pressure wich was for 65mh.

But nowadays the Continental groop gives both on sidewall in Europe, and I wanted to know if they also do that in America.
Other tiremakers dont allow higher then AT anymore, in earlyer days they did allow.

No, I am even more confused. Some of which is due to the abbreviations, what is "ST", what is "AT". All tire pressure readings, as far as I am aware are done with the tires "cold". Similarity what do you mean by "75mh"? Is this 75 miles per hour(75MPH)?
I am seriously considering going out in the cold rain, removing my covers and having a look, but not tonight.
Maybe steer tire and axle tire? If so I believe that these pressure recommendations are on a decal affixed to the driver's door jamb in the USA. And as I said above, the pressure stamped on the tire itself is the maximum pressure allowed.
Surely, someone on this forum can answer this question.

[jadatis]

ST is abreviation for Special Trailer , a tire that gives many blowing tires trouble , because though max speed given of often 140kmu/87m/h , is mostly calculated in maxload for 65mph .
This gives more deflection, so more heatproduction a cicle, but because lesser cicles a second at that lower speed, same heatproduction a second.
Then these tires have higher maxload then LT( lighttruck) tires with same sises and loadrange( ( LRD 65PSI behind AT, E AT 80psi) .

Can write a book about it , but dont look in the rain, when I know it within a month, its OK.
Then you can learn from it all too.

Learned since using mobile phone to write answers, to keep my story' s relatively short, but leave for that reason explanation away. So also reason for writing errors not corrected, askes much of the fine motorics of this 59 years old man.

[Hooligan]

The manufacturers recommended tire pressures from the chart are "The minimum required pressure for that weight" Most RV'ers do add a few pounds for safety and to allow for slight loss each time you check pressures.

[jadatis]

Here 2 pictures of one Viking tire, also in the Continental- groop.
One with the 65 psi behind the sises also D-load
The other with that maximum inflation pressure of 10 psi higher so 75 psi.

Here a summary of the brands that belong to the Continental-groop, but if you find this double pressure, google the brand, and most likely it is also one of the Continental groop.
1. Continental
2. Semperit
3. Viking
4. Vanco
5. Uniroyal
Mayby not all these brands are sold in America I think.