Fundamentals of the Examination and Comparison of Tires, Tire Treads, and Tire Track Evidence

Fundamentals of the Examination and Comparison of Tires, Tire Treads,
and Tire Track Evidence

This course is approved by the International Association for Identification as credits towards certification and re-certification


Class Rules and Guidelines

Class Attire: Casual
Breaks: Usually one short break per hour.
Lunch: One hour
Starting Time: 8:00 A.M
Ending Time: 4:30 P.M
Participation of Students: Requested, appreciated and rewarded
Required Materials:
  1. Scales
  2. Calibers
  3. Magnifying Glass
Recommended Reading:
  1. Tire Tread and Tire Track Evidence, Bodziak, W. J.
  2. Forensic Tire Impression Identification, Nause, Lawren, S.Sgt.,
Testing: Oral testing throughout the course, Final examination, Practical casework
Certificates of Completion: Presented at end of seminar

Course Duration

This particular course is a comprehensive training course that can run 3-days (24 hours), 4-days (32 hours) and 5-days (40 hours) depending on the needs of the hosting agency

Target Audience

This course is designed for criminal evidence analysts and forensic scientists with the responsibility for examining and comparing tire treads and tire track evidence. This course is also designed for those wishing to begin a career in tire evidence.

Course Description

This training course is designed to present a series of interactive lectures using PowerPoint, Adobe Photoshop, and various other software programs. This training session will provide an overview with both lecture and hands on exercises of the proper methods and techniques in the examination and comparison of tires, tire treads, and tire track evidence. There will be various discussions related to the proper techniques and methodologies in the examination and comparison process. There will be heavy discussions on the manufacturing of tires and tire tread designs and how it pertains to the comparison process. Numerous practical exercises both in class and outside of the classroom are utilized and implemented to emphasize and critique the skills of the students to properly perform this level of training in tire track science. After each exercise the student’s work will be critiqued and measured.


Course Objectives:

  • Define the aspects of a quality examination photo
  • List important events in the history of tire track and tire treads.
  • Describe the earliest case in tire track history.
  • Describe how tire tread manufacturing has evolved over the years.
  • List the basic elements of the nomenclature of a tire.
  • Describe the evidentiary value of symbols and logos on tires.
  • Define the terms used in describing various aspects of a tire.
  • Define the terms used in various aspects of the manufacturing process.
  • List the basic tire tread construction methods.
  • Describe the different types of tire tread design construction and the potential importance it may have on the identification process.
  • Describe how design features in tire tread designs are applied in comparative examinations.
  • Describe how manufacturing techniques may contribute in the decision making process of an examination.
  • Describe what the 3-T process is.
  • Describe what is meant by pitch sequence.
  • Describe the location of mold numbers
  • Describe the location of DOT numbers
  • Describe the location of wear bars and wear bar indicators
  • List and describe the types of characteristics used in the comparison process.
  • Describe and apply terminology related to the examination of tire tracks.
  • Describer the difference between tire tracks and tire treads.
  • Describe the elements of clear and concise case documentation.
  • Describe proper collection and preservation methods for known shoes.
  • List methods for obtaining exemplars.
  • Describe the fundamentals of the procedures and principles of the comparison process.
  • Distinguish between identification and individualization.
  • Describe the fundamentals and functions of ACE-V methodology.
  • List the types of methods of comparisons.
  • Distinguish between variations and distortions.
  • Describe the steps in the conclusion process.
  • Describe the SWGTREAD Guidelines.
  • Describe the elements of clear and concise report writing.
  • Describe the proactive case approach.