Quote:
Originally Posted by FUNFER2
With using such low psi, don't you get uneven tire ware ? (outside tred)
Or is the psi with bias-ply different ?
I would hate to ruin my expensive Billboards, which I haven't mounted yet. 
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You have to remember that each tire is only carrying approximately 700 pounds over a fairly large foot print.
I did a couple quick burnouts in the garage to make sure I had a good footprint and that is where the 18 PSI came from.
Just noticed I forgot to mention one item. The recommended pressures on Rogers site are 20 PSI cold. If hot, they are 27 PSI.