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Old 05-17-2015, 03:12 PM   #21
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Join Date: Dec 2012
Posts: 1,794
Originally Posted by pgandw View Post
It was me. Printed on the sidewall (among other warnings and ply makeup) of my 2014 Rockwood A122 OEM tires:

ST185/80R13 Load Range D
max load single axle 1710 lbs at 65 PSI
max load dual axle 1520 lbs at 65 PSI

I was surprised when I read all the fine print on the sidewall. I was also surprised that I could not find another brand of same size trailer tire in load range D on-line at any of the popular sites.

Fred W
2014 Rockwood A122 A-frame
The de-rate refers to the tire not the number of axles and therefore the combined weight capacity increases significantly with 4 tires. I think it has to do with a flat tire and 3 tire capacity remaining with only 1 on one side (a safety factor) JMO

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