Knowing when to repair or replace a damaged tire is key to protection and safety. Small punctures (≤¼ inch) in the tread area (not sidewalls) can often be repaired with a plug or patch, but only if the damage doesn’t affect the tire’s internal structure. Avoid DIY repairs if you’re inexperienced—professional repairs ensure the tire is safe to use. However, replace tires if: the puncture is larger than ¼ inch, located on the sidewall or shoulder, or if the tire has bulges, cracks, or separated tread. Also, replace tires when tread depth falls below 2/32 of an inch (the legal minimum in most regions) or if they’re older than 6-10 years (check the manufacturing date on the sidewall). Continuing to drive on unsafe tires risks blowouts and accidents, while unnecessary replacements waste money. Always prioritize safety when deciding between repair and replacement.