Which parts fail
Components named in complaints (wheels, lug nuts, original-equipment tires, TPMS).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2007 Mercury Grand Marquis owners, lightly cleaned up (personal details are redacted by NHTSA).
On September 29, 2017 around 9-10 pm , my husband had just picked me up from work and I was 6 months pregnant, we were driving down the highway and a car on the opposite side of the highway pulled out from the light and hit us on the driver side wheel and fender and broke the steering knuckle, the rack and pinion and broke the steering wheel loose, also the suspension. My car was disabled from the accident. I also had to be rushed to the hospital because I was having contractions so they wanted to make sure my baby was okay. Also the driver hit us and ran. The cops never found the car. In order for me to get my car back on the road I had to purchase a steering column, a rack and pinion, and steering knuckle and suspension out of my own pocket. I was never informed of a recall.
Reference NHTSA action number pe 08060.on 7 April, 2011 I had failure of two tire valves and destruction of one tire. Both valves leaking air at point of insertion, ie cracked stems.visited local Ford dealer, carbone Ford-Lincoln on 11 April 2011. Was told no recall would fix for a price. Told him of NHTSA report and that it was a manufacturing defect and Ford should be responsible and was told I was being unfair. In my request. Got nowhere with Ford , they did not even want to inspect problem, just pay or leave. On 12 April 2011, I contacted Ford motors by phone and spoke with denise. Denise was surprised to hear of such a problem (???) told me the service manager should not have been rude to me and informed me there were no recalls on my vehicle. …
Tl contact owns a 2007 Mercury Grand Marquis. The vehicle has tech international tr414 valve stems. The contact discovered that the front passenger side tire was flat. An independent mechanic replaced the valve stem under recall for free. On a separate occasion, the front driver's side tire flattened. Roadside assistance changed the tire and also replaced the valve stem, which was found to be defective. On the third occasion, while driving less than 60 MPH, the contact could hear the rear passenger tire losing air. She was able to pull off the road. It was discovered that the tire was affected by the valve stem, which pertained to NHTSA campaign id number 08t018000 (tires:valve). Ford refused to assist because the vehicle was not brought to them first for repairs. The failure mileage was 26,000 and current mileage was less than 27,000. Updated 12/1/08 updated 12/05/08.
In April, the left front tire on my Mercury Grand Marquis went suddenly flat at high speed on an interstate. The problem was a separation of the valve stem. Dealer replaced valve stem and tire under warranty. In October, my right front time went suddenly flat, again at high speed on an interstate. Problem was again separation of the valve stem. My subsequent inspection disclosed that both rear valve stems were cracked and about to separate as well. Dealer replaced 3 valve stems and tire under warranty. I believe the failures can be traced to tech international model tr413 valve stems, which I understand were original equipment on my vehicle and have had numerous failures. I would urge NHTSA to issue an immediate recall on vehicles with those valve stems . Mileage on my vehicle at second failure was 5945.
I have had two flat tires, one front and one rear. Both happened while the vehicle was parked. Once in my garage and the other in the parking lot of home depot. Both about a year apart. Both tires were inspected by my mechanic and both tires he had to replace the valve stems as they failed. I am glad it happened while the vehicle was parked. I notified Ford motor co. Of my problems with the tires and received no satisfaction. The vehicle now has 35000 miles on the Michelin tires and I can't wait to change tires and valve stems. I read somewhere that the 2007 Mercury Grand Marquis was one of the Ford products that has a defective tire valve stem made in china. It should have been a recall back in 2007.
During the month of aug 08 I had 3 flat tires. In each case the tire went flat while traveling on a roadway at speed. Each flat was caused by a valve stem failure (cracked and leaked)the first failure seemed like a normal event, the second seemed questionable , the third was absolute confirmation of a clear problem with the valve stems. The valve stems were replaced on the 3 tires as well as the 4th before another valve stem failure. The 3 tires that went flat sustained sidewall damage. The valve stems on this vehicle were clearly defective and potentially very dangerous to the operation of this vehicle (or any vehicle with these type of valve stems) by an inexperienced operator.
Tl contact owns a 2007 Mercury Grand Marquis equipped with good year assurance comforted tires, tire size 225/70/16. While driving approximately 80 MPH, the contact observed that the driver side rear tire began to vibrate excessively. The vehicle was taken to an independent auto tire shop where the technician informed the contact that the rear driver side tire experienced substantial tread separation with the wire belts visible. The defective tire and the other three tires were replaced on the vehicle by a different manufacturer. The failure mileage was approximately 24,000 the dot was unavailable. The consumer replaced the tires with a different brand. Updated 01/03/11
Tl contact owns a 2007 Mercury Grand Marquis. The contact stated that there was a defective valve stem on the front passenger side tire. The valve stem cracked on the tire, which caused it to deflate while parked in his driveway. He called aaa and they changed the tire. After inspecting the vehicle, the contact noticed that the valve stem was ruptured on the side. He then took the vehicle to the dealer and they replaced all four valve stems under warranty. A mechanic stated that the chinese valve stems were an issue, which were replaced at least 4-5 times a week. The current and failure mileages were approximately 11,200. Updated 09/16/08 updated 09/19/08.
Tl contact owns a 2007 Mercury Grand Marquis. The vehicle has dill-acp tr-413 tire valves. While driving approximately 70 MPH, the vehicle began riding roughly. He pulled the vehicle to the side of the road and noticed bulges in the front passenger side tire and a fractured valve stem. He took the vehicle to the dealer and they stated that the valve stem was manufactured defectively. He is in the process of replacing the front driver's side and rear passenger tires. The contact still has possession of the failed component. The failure and current tire mileages were 18,000. Updated 01/14/09. The consumer stated the tire went flat. Updated 01/21/09.
I purchased a new Mercury 2007 Grand Marquis ls. I have Michelin lx4 energy tires. I had a blow out on front left tire at 4700 miles, the side wall came apart. I had a second blow out on front right tire at 5840 miles again side wall came apart. I had third blow out at 6000 miles on left rear same side wall damage, at this time I replaced right rear tire because I was traveling out of my area. I tried to get dealer to replace tires under warranty but they refused and said it was a Michelin problem. I replaced tires with michelins which I am sorry I did this.
NHTSA investigations
Tire valve cracking
On October 14, 2008, odi opened pe08-060 to investigate allegations of cracked and leaking snap-in tire valves in model year (my) 2007 vehicles manufactured by Ford motor company.the valves were supplied to Ford by topseal auto-parts, a subsidiary of the shanghai baolong automotive corporation in china.valves made by topseal for aftermarket sale were the subject of two recent safety recalls by tech international…
Wheel & Tire complaints in other Grand Marquis years
Frequently asked questions
How common are wheel & tire problems on the 2007 Mercury Grand Marquis?
NHTSA has 25 complaints about the wheels & tires of the 2007 Mercury Grand Marquis, 26% of the model year's 96 complaints. The component named most often is valve (6 mentions).
Is there a recall for 2007 Mercury Grand Marquis wheel & tire problems?
No. NHTSA lists no wheels & tires recall for the 2007 Mercury Grand Marquis, though it has 3 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2007 Mercury Grand Marquis wheel & tire problems start?
Half of the complaints with a recorded mileage happened before about 18,000 miles, and 83% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 0 fires and 0 injuries to wheels & tires problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.