we had one blow out on our  super66 diesel   and had no trouble getting a new one.   there were  2 companies making the propersize   ( 12.9x38 am I right?)   both were around  $275  ...    firestone was one ... cant rember the other now.   


if you ask for a 10x38  you will not find anyone with that..  since  that is the old numbering system.