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Tires and Wheels in Crashes PART 2 - 2hr Zoom

  • 04 Dec 2026
  • 12:00 - 14:00
  • Worldwide via Zoom
  • 1498

Registration

  • Registration for NAPARS member to view the presentation
  • Non-Members Registration for viewing by Non-Member.
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Tires and Wheels Involved in Crashes, PART 2

DATE: Friday, 04 December 2026
TIME: 12 noon - 2pm EST (GMT-5, or 9am-11am Pacific Time)
COST: Free for NAPARS members;  $6 for non-members

PRESENTER: Bill Woehrle

ACTAR: This event will be submitted to ACTAR for CEU consideration. If approved, accredited attendees should be prepared with the i-Attend app on their phone to sign in during the show, per the guidance on their website: https://actar.org/ceu/earning 

All attendees will be able to request an attendance certificate during the show.

The show will be recorded and put in the Reference Library along with various supporting material.


We covered the Wheel section back in June, and that show was recorded and is in the Zoom directory in the Reference Library. This event will pick up at Tire Failures. 


TOPICS:

    • 1.     Wheel Failures (covered last time)
      • 1.1.  Wheel Separations (Wheel off incidents)
      • 1.2. Impact Failures
      • 1.3. Fatigue Failures
      • 1.4. FMVSS Wheel Marking Requirements
      • 1.5. Voluntary Performance Standards
    • 2.     Tire Failures
      • 2.1. Belt Separation Failures
      • 2.1.1.    Stress Failures
      • 2.1.2.    Fatigue Failures
      • 2.1.3.    Impact Ruptures
      • 2.2. Low (or no) Pressure Failures
      • 2.3. Wear Consequences
      • 2.3.1.    Treadwear Indicators
      • 2.3.2.    Traction
      • 2.3.3.    Relationship to Separations
      • 2.4. Tire Explosions
      • 2.4.1.    Bead Break
      • 2.4.2.    Rim Failures
    • 3.     The Tire Sidewall Story (“Sophisticated, Intended, and End Users”)
    • 4.     High Risk Wheel Positions for Tire Failures
      • 4.1. Truck Tires
      • 4.2. Passenger/Light Truck Tires
      • 4.3. Motorcycle Tires
    • 5.     Motorcycle Wheel Issues
    • 6.     Motorcycle Tire Issues

SPEAKER: Our speaker will be Bill Woehrle. He has been handling tire inspections and investigations for more than 40 years. He has presented internationally, and authored training manuals on the topic. He has authored and co-authored tire-related SAE papers including "Analysis and Evaluation of the Damage and Durability Performance of Steel Belted Radial Ply Passenger Tires That Have Experienced Severe Impacts" (2012-01-0795), "Tire Traction - Matching Product & Test Technologies" (890102), and "Toward an International Standard for Measuring Energy Loss of Tires" (841239). He is the principal at Tire Forensics Investigations in Michigan ( http://tireforensics.com/ ), offering tire and vehicle inspection services to help clients understand how they relates to vehicle dynamics and crashes. 

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