2015 Nissan Leaf Wheels Problems

THE TIRES ON MY BRAND NEW NISSAN LEAF WENT OUT AT 15,000 MILES. THESE CARS HAVE NO SPARE WHEEL SO WHEN WE HAD FLAT TIRE WE HAD TO TOW IT TO THE TIRE SHOP AND PAY THE TOW TRUCK FROM OUR POCKET. NISSAN WEBSITE HAVE 36,000 MILES WARRANTY ON TIRES LISTED, BUT WHEN I CALLED NISSAN THEY SAID TIRE WARRANTY IS THOUGH BRIDGESTONE WHO MANUFACTURE THE TIRES ACCORDING TO NISSAN. THEY INSTALL ON NISSAN LEAF. I TOLD THEM NISSAN SHOULD BE RESPONSIBLE SINCE BUYERS DO NOT KNOW WHO MADE EACH INDIVIDUAL PART OF THE CAR. ANYWAY, WHEN I CALLED BRIDGESTONE THEY SAID THEY CAN NOT HELP ME. AS A BUYER OF NEW CAR IT IS NOT ACCEPTABLE TO HAVE TIRES GOES OUT AT 15,000 MILES. I HAVE DONE THE RECOMMENDED TIRE ROTATION AT 7500 MILES. ALL I WANT FROM NISSAN TO INSTALL TIRES AS THEY SHOULD UNDER WARRANTY AND REIMBURSE FOR THE TROUBLE ONLY FOR THE MONEY I SPENT NOT FOR TROUBLE AS I LOST SO MUCH TIME. SO FAR I HAVE TO REPLACE 2 TIRES AND THE CAR CURRENTLY HAVE 23,400 MILES. FIRST INCIDENT WITH TIRE HAPPENED AT 15,000 MILES. THE TWO ORIGINAL TIRES CONDITIONS ARE REALLY BAD. IT IS COMPLETELY WORN OUT.