2007 mercury marquis with michelin energy lx4 p225-60 r16 tires with 15,000 miles. At 65 MPH felt vibration in front end, I started braking and pulling to shoulder when left front tire exploded. Inspection of tire showed the outside sidewall blewout. I searched the internet and found several other incidents of this reported. This tire is unsafe and should be immediately investigated. I will take…
2007 Mercury Grand Marquis tires problems
moderate 23 complaints filed with NHTSA · avg repair $150 · see tires across all vehicles →
Failure mileage
Complaints
23
Recalls
0
Avg fix
$150
When does it fail?
Of the 23 tires complaints filed for the 2007 Mercury Grand Marquis, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Reported failure mileage clusters in the 0-25,000 mi band — 5 of 6 complaints with an odometer reading on file land there.
Tires accounts for 24% of all owner complaints filed against this vehicle, across 8 categories tracked.
The failure pattern owners describe
The dominant problem in these 23 complaints centers on defective tire valve stems that crack or separate, causing tires to lose air suddenly at highway speeds. Owners discovered the issue when inspecting flattened tires—the valve stem would show visible cracks or leaks at the insertion point. Multiple owners found that several valve stems on the same vehicle were cracked or about to fail; one mechanic remarked he was replacing cracked stems 4–5 times per week on these models. Most failures occurred between 5,000 and 26,000 miles. The valve stems in question were Dill TR413 or TR414 models, and NHTSA Campaign 08T018000 addressed them. Ford dealers initially denied coverage, though some later replaced stems under warranty; costs ranged around $63 to $200 per tire with new stem.
Separately, a handful of owners reported early sidewall separation on original Michelin LX4 tires—catastrophic blowouts at highway speed with little tread wear, occurring as early as 4,700 miles. These tires separated cleanly from the rim without visible punctures. Dealers refused warranty coverage, blaming improper inflation. One owner also reported tires deflating severely during vacation travel and overheating.
Failure modes owners describe
Valve Stem Cracking and Separation
Tire valve stems crack, split, or separate at the base, causing rapid air loss. Owners report finding cracked stems when tires go flat, and many discover cracking on replacement inspection. Multiple valve stems can fail on the same vehicle.
When: Between ~5,000 and 26,000 miles; failures reported from 2007 through 2011
Symptoms owners cite: Tire goes flat without blowout noise; Visible cracks or ruptures in valve stem; Air leaking from valve stem insertion point; Multiple valve stems cracked simultaneously on same vehicle
Repairs/costs cited: Owners replaced valve stems at tire shops; some dealers replaced under warranty; costs ranged from $63 to ~$200 per tire with new valve stem. Mechanics noted replacement was routine but frequency unusual.
Recalls/TSBs owners mention: NHTSA Campaign 08T018000 addressed TR414/TR413 valve stems. Ford dealers initially denied coverage or claimed defect was not recalled; later some honored warranty on valve stem replacement. Dill (valve manufacturer) issued recalls on valve stems. One owner mentioned anticipation of reimbursement from manufacturer.
Sidewall Separation and Blowouts
Tire sidewall separates from the tire body or experiences catastrophic blowout, often with minimal visible tread wear. Roadside remains intact but internal structure fails. Occurs at highway speeds without warning.
When: Between ~4,700 and 24,000 miles on original equipment Michelin LX4 and Goodyear tires
Symptoms owners cite: Sudden tire deflation at highway speed (53–80 mph) without audible blowout; Sidewall separates cleanly from rim; Excessive vibration before failure; Tread separation with visible wire belts; Minimal tread wear before failure
Repairs/costs cited: New tires purchased; one owner replaced all four tires with different brand. Mechanics found sidewalls separated from tire structure.
Recalls/TSBs owners mention: Dealers refused warranty coverage on Michelin LX4 tires, claiming owner responsibility for pressure. No recalls mentioned for sidewall separation failures.
Tire Pressure Loss and Overheating
Tires lose pressure gradually or suddenly and overheat. One report of tires deflating to critically low pressure (10 PSI) during driving.
When: Mileage not specified in available narratives
Symptoms owners cite: Tires deflate to dangerously low pressure (10 PSI reported); Tire overheating during travel
Repairs/costs cited: No repair details provided in narrative.
Synthesized from 23 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 6 most recent
Tl*the 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…
While traveling on vacation tires deflated to 10 PSI and overheated. *tr
Tl*the 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…
My wife was driving my car to pick up daughter from school. Tire blew and is unusable. I checked the tire itself and could not visually find and nail or other cause of puncture. Checked stem and found obvious crack. *tr
I had a tire valve fail. The repair shop pulled the tire apart and the tire was perfect. They said that the valve probably was defective. 2007 mercury grand marquis w michelin tires ( mileage about 14,000 miles). *tr
Had tires trouble with your 2007 Mercury Grand Marquis?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the tires problem on the 2007 Mercury Grand Marquis?
It's a documented issue but not catastrophic. 23 complaints have been filed. Repairs average $150 and most owners catch it before it causes a breakdown.
At what mileage does the tires typically fail?
Across the 22 complaints that reported odometer mileage, most tires failures cluster between 11,200 and 21,000 miles, with the median around 16,500. A quarter of owners report trouble before 11,200; a quarter make it past 21,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $150 for tires repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to tires?
No active recalls currently cover tires issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2007/Mercury/Grand Marquis.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.