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Old 07-21-2012, 03:38 PM   #9
GMcKenzie
Senior Member
 
Join Date: Oct 2010
Location: Okanagan, BC
Posts: 916
I just inflate to the sidewall rating.

But, there is an old trick that may work well here,

Get a piece of chalk and make a line across the tread (from sidewall to sidewall). Roll the trailer forward a few feet so the tires rotate a few times. Look at the line. If the center rubs off faster, you are over inflated. If the edges rub off faster you are under inflated. The line should rub off uniformly for each tire. If one edge rubs off, you've got an alignment issue.

Make sure to do it with a normal load and completely hooked up.
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