Enrollment Deadline: 15 March 2026

Participants will determine if a suspect tire could have produced provided questioned imprints, then report results using the SWGTREAD 7-point scale of conclusions.

Sample Description: A digitally downloadable .tif file of a tire, known collected exemplars, and questioned imprints and a supplemental file containing an additional set of known exemplars, intended to bolster participant confidence in their conclusions. Due to large file sizes, advanced photo image software may be required to open and view these images. With tests consisting of digital test materials, participants are not limited to only on-screen comparisons and may use any other method; however, due to differences in printing technology, CTS cannot guarantee the quality of images printed from digital media. The images are the same as those used in Test 5351, and reporting aspects are combined.

Digital test materials are made available in July.

Additional Information: Digitally downloadable test materials, as well as response forms for all test formats, are only available on www.cts-portal.com. The information necessary to access the test materials will be provided via email to the primary contact on file on the day of the test release.

This test is included on CTS' Scope of Accreditation to ISO/IEC 17043.