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Old 10-12-2012, 03:23 PM   #15
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Originally Posted by georgetown350 View Post
sorry to contradict but I do not agree that the numbers from the chart are the minimums. They are the exact recommended inflation for the weight of your rig.....which means you will not be under or overinflated....... we can all over inflate our tires by using our gross weight but we prefer to use the charts so as not to over inflate...... If I'm wrong I'm sure others will be willing to let me know....
OK, I will!!

See my post (#14) for the correct answer according to the tire manufacturers.
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Old 10-12-2012, 03:34 PM   #16
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Originally Posted by lpkirby View Post
Wouldn't an over inflated tire wear badly? Over Inflated for the weight of the coach, not what is printed on the sidewall.

Leon
I really doubt if it would prematurely wear it, if concerned, go by the coach inflation pressures listed in the manual or as suggested, weight each wheel and go by the chart + 10#. On a trailer, I've never seen a trailer tire worn in the center and I've been towing trailers of all sorts since 1960.
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Old 10-12-2012, 04:06 PM   #17
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Originally Posted by Mr_D View Post
The pressure on the sidewall of most RV tires is NOT the maximum it should ever have! It is the MINIMUM to support the maximum rating of the tire!!

ON TRUCK size tires the cold pressure on the sidewall is the MINIMUM required to support the maximum weight rating of the tires. Same with the tire charts, it's the MINIMUM cold pressure to support the weight. So YES you can exceed the pressure on the sidewall by a few psi

From the Firestone/Bridgestone RV tire guide:
From the GoodYear RV Tire Guide:


TOYO is one that does put the maximum pressure on the sidewalls of their tires though.

Wow great information!
Thank you

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Old 10-12-2012, 05:43 PM   #18
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The pressure on the sidewall of most RV tires is NOT the maximum it should ever have! It is the MINIMUM to support the maximum rating of the tire!!

ON TRUCK size tires the cold pressure on the sidewall is the MINIMUM required to support the maximum weight rating of the tires. Same with the tire charts, it's the MINIMUM cold pressure to support the weight. So YES you can exceed the pressure on the sidewall by a few psi
Wow I'm so glad that I know what psi to put in my tires because this thread would have surely confused me. Ok now when you look at the sidewall of your tire and it reads max tire pressure, this means MAX TIRE PRESSURE.......this means for example if it reads 110 max psi, by no means are you to exceed that pressure under any circumstances. And to repeat myself about the tire charts..... if you look up your coaches weight and the chart suggests 100 psi, that is what they recomend for your coaches weight.

Under inflation is the number one cause of tire failure so for sure don't go under the 100 psi.... but technically speaking, going over the 100 psi recommendation means you will be overinflated and subject to possibly a harsher ride uneven tire wear and more prone to punctures but it is not as critical as going under inflated.
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