2008 Mercury Mariner Tires & Wheels Problems

AS WE DRIVE WHEN WE GO INTO A RIGHT OR LEFT CURVE IT ACTS LIKE THE FRONT WHEELS LOCK UP FOR JUST A FEW SECONDS. I HAD A RECALL ON IT BACK IN LATE SUMMER I HAD TAKEN IT TO TRI-LAKE FORD IN BRANSON MISSOURI THEY SAID THEY FIXED THE PROBLEM BUT IS STILL DOING THE SAME THING. PLEASE CHECK AND SEE IF THERE IS ANYTHING THAT CAN BE DON BEFORE IT CAUSES AN ACCIDENT OR I GET STRANDED BESIDE THE ROAD. THANK YOU FOR YOUR HELP. *TR

ON JULY 5, 2009 WHILE DRIVING MY MERCURY MARINER THE PASSENGER SIDE REAR TIRE WENT FLAT. CAUSE WAS A BAD VALVE STEM; ON SEPTEMBER 4, 2009 I HAD THE SAME PROBLEM WITH THE DRIVER SIDE REAR TIRE. THE AUTO TECH AT WALL MART SHOWED ME THE VALVE STEM WAS DRY ROTTED AND HAD TO BE REPLACED. I ALSO HAD HIM REPLACE BOTH VALVE STEMS ON THE FRONT TIRES, WHICH ALSO SHOWED SIGNS OF DRY ROT. *TR

ORIGINAL CONTINENTAL TIRE ON THE 2008 MERCURY MARINER HAS TREAD SEPARATION AND CAUSED A BLOW OUT. CONTINENTAL WILL NOT REIMBURSE OR SWAP ON BLOW OUT, BUT ONLY ON TREAD WEAR. PICTURES OF TIRE SEPARATION ARE AVAILABLE. *TR

TIRES CONTINUALLY GET LOUDER AS MORE MILES ARE PUT ON THEM. IT IS A WHINING NOISE AND YOU CAN HARDLY TALK NORMAL OR LISTEN TO THE RADIO WITHOUT TURNING THE VOLUME LOUD. STARTED COMPLAINING TO THE DEALERSHIP WITH ABOUT 12,000 MILES ON THE TIRES. THEY CURRENTLY HAVE ABOUT 20,000 MILES ON THEM. *TR

IN JULY 2008 , "CHECK TIRE PRESSURE" LIGHT BECAME PRESENT. UPON PLACING AIR IN LEFT-REAR TIRE A CRACK/ LEAK IN VALVE STEM BECAME PRESENT. VALVE STEM WAS REPLACED. IN AUGUST 2008 SAME ISSUE OCCURRED WITH RIGHT REAR STEM. TODAY, OCTOBER 26TH 2008 THE ISSUE OCCURRED WITH THE RIGHT FRONT VALVE STEM. ALL VALVE STEMS ON MY VEHICLE HAVE NOW BEEN REPLACED. *TR