Thanks to everyone for the tire pressure input.

 

After a little research I found the Dresser Aircraft Tire web sight which has a long table listing most aircraft tire sizes.  I guess the bottom line is that it depends mostly on the structure of the tire (ply rating) and weight of the aircraft.  The following is from their table and applies to Michelin, Goodyear, Condor, McCreary and Aero:

     

    Max unloaded tire pressure

        6.00-6  4 ply  --- 29 psi

                   6 ply  --- 42 psi

                   8 ply  --- 55 psi

 

        5.00-5  4 ply  --- 31 psi

                   6 ply  --- 50 psi

                  10 ply ---  88 psi 

 

From this I would conclude that as long as the tire is not under inflated and the pressure does not exceed the above limits, you are OK.  Note that these are unloaded pressures.

 

Leon Smith

LNCE N63LS