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Posted for Pete Cavitt:

>>Date:  26-Oct-98 10:39:06  MsgID: 862-72895  ToID: 74740,231
>>From:  CavittP@aol.com >INTERNET:CavittP@aol.com
>>Subj:  Tire Pressures
>>Chrg:  $0.00   Imp: Norm   Sens: Std    Receipt: No    Parts: 1

I'm now running the following pressures in the tires of my Lancair-235/320:
Mains 40 psi
and Nose 30 psi. I'm having really good luck with these pressures.  If I'm
operating at gross weight, I'll up the pressures to 45 and 35, but most of
the
time I'm flying solo or at light weights, so 40 & 30 work well.

Using the recommendation of a couple of other Lancair owners I operated the
first set of tires at 30 in the mains and 20 in the nose, the idea being
that
there would be no nosewheel shimmy and the landings would be softer
(compensate for the stiff gear), but these lasted only 100 landings.  The
main
tire tubes pooped out - too much wall flexing resulting in cracking and
leaks,
and the nose tire scalloped on the edges.

With 40 and 30 (or 45 & 35) my tires are giving excellent service - about
200
landings.  Could probably get more out of them, but as soon as the tread
starts to disappear I like to change them.  

Pete Cavitt - N320PL
619-283-8483