1990 Dodge D250

ISSUES WITH TIRE FAILURES, WITH LT236X75R16 TIRE FAILURES ON THIS D250 AND W350 TRUCKS. KNOW OTHER INDIVIDUALS EXPERIENCING THE SAME ISSUES AND HAVE BEEN RIDING BEHIND THEM WHEN I WITNESSED SAID FAILURES OCCURR. BRANDS HAVE INCLUDED BUT NOT BEEN EXCLUSIVE TO GENERAL, CONTINENTAL, ETC. I HAVE BLOWN OR HAD TREAN PEEL OFF 5 TIRESIN THE PAST 6 YEARS WHILE ONE FRIEND HAS 6 SIMILAR OCCURRENCE IN THE PAST YEAR. RUBBER SEEMS TO BECOME BRITTLE AND SEPERATE FROM THE STEEL CORD. MAY BE RELATED TO A RUMOR THAT THE RUBBER COMPUNDS WERE ALTERED TO CAUSE TIRES TO "DRY ROT" AFTER SEVERAL YERAS SO NO SITTING IN JUNKYARDS FOREVER. OWN OVER 30 VEHICLES AND HAVE CONSTANT PROBLEMS WITH CRACKING IN TREAD AND SIDEWALL AREAS ON ALL TIRES. BUT THE LT235X85R16 TIRES SEEM TO HAVE THE MOST CATASTROPHIC FAILURES PARTICULARLY AT HIGHWAY SPEEDS TO THE POINT I AM PULLING THEM OFF ALL THE VEHICLES THAT I CAN. ENVIROMENTALLY THIS CAUSES MORE WASTE IN OIL LOSS AND MANUFACTURING BYPRODUCT CREATION WHEN NEW TIRES MUST CONSTANTLY BE PURCHASED TO REPLACE DRY ROTTING TIRES WITH ALMOST NEW TREAD ON THEM!