NHTSA safety investigation
NHTSA Investigation EA88021
Engineering Analysis · UNIROYAL TIRE CO. · SUSPENSION
An investigation is not a finding that a defect exists.
NHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
What NHTSA is examining
The agency's own description of the inquiry, quoted as published
TREAD SEPARATION
SUMMARY OF INFORMATION FROM MANUFACTURER:INFORMATION SUBMITTED BYUNIROYAL DURING THE PRELIMINARY EVALUATION STATED... THERE HAVE BEENOVER 1,000,000 TIRES PRODUCED IN THIS COUNTRY DURING THE PERIOD IN QUESTIONAND TOTAL ADJUSTMENTS FOR ALL REASONS ARE ABOUT .8%.THESE ARE NOTEXTRAORDINARY ADJUSTMENT FIGURES.ANALYSIS:ANALYSIS REVEALS THAT THE ADJUSTMENTS FOR BELT AND TREADSEPARATIONS ARE CONSIDERABLY HIGHER FOR 1985 10 PLY RIB TIRES, INCOMPARISON TO THE 8 PLY RIB AND 8/10 PLY LUG AND RIB TIRES PRODUCEDIN 1986.LT235/75R15 UNIROYAL LAREDOS WERE RECALLED IN DECEMBER, 1986.LT235/85R16 GOODRICH TIRES WERE RECALLED IN JULY, 1987.RECOMMENDATION:SEND AN IR.===
An investigation is a separate record from a recall and from a manufacturer communication. A manufacturer campaign to repair a safety defect or a failure to meet a federal safety standard.
Investigation details
Identifiers, dates and outcome as recorded by NHTSA
- Action number
- EA88021
- Investigation type
- Engineering Analysis (EA)
- Status
- Closed
- Manufacturer
- UNIROYAL TIRE CO.
- Component
- SUSPENSION
- Opened
- Feb 5, 1988
- Closed
- Aug 23, 1988
- Associated recall campaign
- None recorded
Vehicles named in this investigation
3 model years across 1 model
Being named here means NHTSA included the vehicle in the scope of its inquiry. It is not a statement that these vehicles have a defect.