NHTSA Office of Defects Investigation
Engineering Analysis EA05-011: FRONT TIRE FAILURES
- Closed
NHTSA's Office of Defects Investigation opened Engineering Analysis EA05-011 on July 14, 2005, the day it closed Recall Query RQ05-001, whose summary cites it, and closed it on August 30, 2006. NHTSA's investigations file lists the Country Coach Intrigue and Allure for it and links recall 06V-262 to it.
Updated daily from NHTSA's investigations file
Key facts
- NHTSA number
- EA05-011 (also written EA05011)
- Investigation type
- Engineering Analysis A more detailed stage of a defect investigation, opened when NHTSA's Office of Defects Investigation decides an issue merits further review, often after a Preliminary Evaluation or a Recall Query; it can include vehicle testing, surveys and further information requests.
- Status
- Closed August 30, 2006
- Opened
- Closed
- Vehicle or equipment manufacturer
- COUNTRY COACH INC
- Component
- Tires
- Recall linked by NHTSA
- 06V-262: DEFECTIVE TIRES, reported
- Vehicles and equipment
- Country Coach Intrigue and Allure
NHTSA's summary
As NHTSA's Office of Defects Investigation wrote it for Engineering Analysis EA05-011.
ON JUNE 30, 2006, COUNTRY COACH FILED DEFECT REPORT 06V-262 STATING THAT THE TOYO 275/70R22.5M102Z TIRES ARE DEFECTIVE AND COULD FAIL UNEXPECTEDLY CAUSING A LOSS OF VEHICLE CONTROL.ODI'S INVESTIGATION FOUND THAT FRONT TIRE FAILURES HAVE BEEN CAUSED BY COUNTRY COACH'S SELECTION OF TIRES THAT PROVIDED MARGINAL LOAD CARRYING CAPACITY FOR THEIR INTENDED APPLICATION.OWNERS WERE FREQUENTLY UNABLE TO COMPLY WITH COUNTRY COACH'S CAMPAIGN REQUIREMENTS BECAUSE THESE REQUIREMENTS WERE INEFFECTIVELY COMMUNCIATED AND BECAUSE SPECIFIED TIRE INFLATION PRESSURES WERE DIFFICULT FOR OWNERS TO ACHIEVE AND MAINTAIN. ODI ALSO FOUND THAT THE RUBBER PROPERTIES OF THE TOYO 275/70R22.5 M102Z DEGRADE WITH TIME. THE DEGRADATION IN RUBBER PROPERTIES DOES NOT PROVIDE ANY OBVIOUS INDICATIONS TO THE VEHICLE OWNER AND THE TIRES BECOME MORE SUSCEPTIBLE TO FAILURE OVER TIME WHEN SUBJECTED TO THEVEHICLE OPERATING CONDITIONS DESCRIBED ABOVE.
Vehicles and equipment listed for this investigation
NHTSA's investigations file lists these vehicles and equipment for Engineering Analysis EA05-011. A listed model year means only that an investigation names it; it says nothing about any particular vehicle. Model years with a try.vin recall page link to that page's NHTSA investigations section.
What an NHTSA investigation is
NHTSA's Office of Defects Investigation (ODI) looks into possible safety defects in vehicles and equipment, often after owner complaints. An investigation usually starts as a Preliminary Evaluation, or as a Recall Query when it concerns whether an existing recall covers the right vehicles or fixes the problem, and ODI can upgrade it to a more detailed Engineering Analysis. A Defect Petition asks NHTSA to open an investigation, and Audit and Equipment Queries are administrative investigations into whether companies complied with federal vehicle safety requirements, such as reporting, recall and certification rules.
An open investigation is not a finding that a safety defect exists, and NHTSA can close one without a recall.
To see whether a specific vehicle has an open recall, enter its VIN at nhtsa.gov/recalls.
Free VIN check: decode a VIN to see its year, make and model.
Sources
NHTSA's investigation record for EA05-011
Investigation details come from NHTSA's investigations file, which try.vin imports once a day. The investigation types are described from the U.S. Department of Transportation Inspector General's May 2023 report on NHTSA's Office of Defects Investigation, NHTSA's petition rules (49 CFR Parts 552 and 557) and NHTSA's Office of Defects Investigation procedures. How try.vin reads NHTSA investigations.