One problem related to tire has been reported for the 2005 Mercury Grand Marquis. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Mercury Grand Marquis based on all problems reported for the 2005 Grand Marquis.
Tires from walmart store#1541, with less then 10,000, rotated & balanced,at 45-55 mph tires wobble & shake. They rebalanced them today x2 but still not correct at 50-60 mph they still wobble. I just couldn't go back a third time. The store manager just said fix them to his staff and walked away.