SOME TIRES MAY DEVELOP TREAD SEPARATION IN TREAD SHOULDER AREA CAUSING TREAD TO BULGE AND A THUMPING VIBRATION WHEN TIRE IS IN USE; CONTINUED USE MAY CAUSE PLY CORD TO BREAK AND LINER TO TEAR AND LOSE INFLATING AIR PRESSURE.
SOME TIRES MAY DEVELOP A FLEX BREAK IN THE LOWER SIDEWALL PRIOR TO COMPLETING THE ENDURANCE COMPLIANCE TESTING / FMVSS 109.