FIRESTONE 500 TIRE EXPERIENCED TREAD SEPARATION FAILURE RESULTING IN A TRAFFIC ACCIDENT AT HIGHWAY SPEEDS. CONTACTED FIRESTONE VIA REGISTERED MAIL BUY AFTER ONE MONTH NO RESPONSE. THIS IS THE SAME PROBLEM THAT THEY EXPERIENCED IN THE PAST. I GOT A REPLACEMENT TIRE FROM A DIFFERENT MANUFACTURER AND THE SHOP TECH SAID HE NEVER SAW THIS HAPPEN BEFORE. I WOULD NOT EVER PURCHASE A FIRESTONE PRODUCT IN THE FUTURES. THE ACCIDENT HAPPENED AT HIGHWAY SPEED 70 MPH. THE TREAD SEPARATED AND MY VEHICLE SPUN AROUND INTO THE NEXT LANE AND WAS FACING ONCOMING TRAFFIC. ANOTHER VEHICLE TRIED TO AVOID THE ACCIDENT BUT HIT MY DRIVERS SIDE FRONT BUMPER AND FENDER, PUSHING ME OFF OF THE ROAD.