Arlen Holder:   
      
   So 725,000 sq mm approximates 1,224 sq in. internal area of your example tire.   
      
   If a particular vehicle requires 32psi cold air pressure in that tire, that   
   equates to 32 * 1,224sq. in = 39,168 total   
   pounds of air pressure against the interior wall of that tire! Wow!   
      
   If we increase that 32psi figure by 10%, that's 35.2psi.   
      
   35.2 x 1,224 = 39,564 total pounds of pressure against the wall of that same   
   tire.  An increase of only 1.01% in the total pressure against it.   
      
   So much for my theory that each additional pound of air pressure exponentiates   
   the total pressure imposed on   
   the inside of that tire.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)