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In my case, I've run nose tire pressures as low as 25 and as high as 40 psi
and have yet to experience any shimmy - EXCEPT - that once with low pressure
I got a little "bump" during landing. Investigation revealed a deep scallop
off-center of the tread.

Also.. The lower tire pressures cause excess flexing of the tire and tube
sidewalls, and once led to a flat tire while "on the road," which was a major
pain (the tube was cracked around both sidewalls).  When I got home the other
two were replaced, and they also showed signs of cracking.

The plane rides better with lower pressures, but wear better with higher
pressures.  I've settled on 30-35 in the nose and 40-45 in the mains, and I
now get excellent wear with no shimmy.

Pete Cavitt - N320PL
206-953-9403
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