# Has any tread or sidewall separation — Vehicle inspection defect categories: MOT major, minor and dangerous verdicts For Has any tread or sidewall separation, category is Reject; inspection item number is 10; defect reference is a.(3); inspection item is Tires; authority is US 49 CFR Appendix A to Part 396, recorded from its source on 2026-08-06. - **Defect:** Has any tread or sidewall separation _(verified: appears in the quote below)_ - **Category:** Reject - **Inspection item number:** 10 - **Defect reference:** a.(3) - **Inspection item:** Tires - **Authority:** US 49 CFR Appendix A to Part 396 _(our reading, not quoted from the source)_ ## What the source says > (3) Has any tread or sidewall separation. ## Source - https://www.law.cornell.edu/cfr/text/49/appendix-A_to_part_396 Last verified: 2026-08-06. Review by: 2027-02-02. Part of [Vehicle inspection defect categories: MOT major, minor and dangerous verdicts](https://referencesource.org/vehicle-inspection-defect-categories/).