Tread Typer is a discussion board on the SWGTREAD Forum. This board is designed to assist practitioners with make/model determinations of questioned footwear and tire impressions. This resource enables practitioners to post an image(s) of a crime scene footwear or tire impression in hopes that another practitioner will be able to identify the make/brand and model of the shoe or tire, which COULD be the source of the impression. It is the responsibility of the practitioner posting to Tread Typer to verify the information/images included in the responses. It is recommended that you consult with the evidence contributor and remove case-related information in/from the images prior to posting on this board.
In order to access Tread Typer, you must be a registrered as a Practitioner on the SWGTREAD Forum. Go to http://forum.swgtread.org and register. Then, access the Tread Typer board under the Practitioners' Forum.
Non-practitioners are those individuals who collect footwear and tire impression evidence or investigate crimes which involve this type of evidence. Non-practitioners have not completed a formal laboratory training program in the examination of this type of evidence and they don't conduct comparisons, issue laboratory reports or testify as footwear/tire experts in courts of law.
For non-practitioners who are ineligible to access Tread Typer, contact your local forensic services provider for assistance regarding requests for make/model determinations.