Editing Tire (section)

=== Retreading ===
{{Main|retread}}
Tires that are fully worn can be [[retread]]ed, re-manufactured to replace the worn tread.<ref>{{cite book|url= https://books.google.com/books?id=p5PmOvoU2zAC&q=%C2%A0Tires+recycled+into+new+tires+through+retreading&pg=PA169|title=Recycling, International Trade and the Environment |last=van Beukering|first=P.J. |date=2001-02-28 |publisher=Springer Science & Business Media |isbn=9780792368984}}</ref> This is known as retreading or recapping, a process of buffing away the worn tread and applying a new tread.<ref>{{cite web|url= http://www.besttiresguide.com/retread-tires |title=What are Retread Tires? |publisher=Best Tires Guide |archive-url= https://web.archive.org/web/20140717064038/http://www.besttiresguide.com/retread-tires/ |archive-date=2014-07-17|url-status=dead|access-date=2014-04-06}}</ref> There are two main processes used for retreading tires, called mold-cure and pre-cure methods. Both processes start with the inspection of the tire, followed by non-destructive inspection method such as [[shearography]]<ref>MK Meybodi, I Dobrev, P Klausmeyer, EJ Harrington, C Furlong, "[http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1359093 Investigation of thermomechanical effects of lighting conditions on canvas paintings by laser shearography]", SPIE Optical Engineering+ Applications, 2012</ref> to locate non-visible damage and embedded [[Road debris|debris]] and nails. Some casings are repaired and some are discarded. Tires can be retreaded multiple times if the casing is in usable condition. Tires used for short delivery vehicles are retreaded more than long haul tires over the life of the tire body. Casings fit for retreading have the old tread buffed away to prepare for retreading.<ref name="Bodziak">{{cite book|url= https://books.google.com/books?id=yRsHlttaMrMC&pg=PA90 |title=Tire Tread and Tire Track Evidence: Recovery and Forensic Examination Practical Aspects of Criminal & Forensic Investigations |last=Bodziak |first=William |publisher=CRC Press |year=2008 |isbn=9781420006827|pages=90}}</ref>

During the retreading process, retread technicians must ensure the casing is in the best condition possible to minimize the possibility of a casing failure. Casings with problems such as capped tread, tread separation, irreparable cuts, corroded belts or sidewall damage, or any run-flat or skidded tires, will be rejected. The mold cure method involves the application of raw rubber on the previously buffed and prepared casing, which is later cured in matrices. During the curing period, vulcanization takes place, and the raw rubber bonds to the casing, taking the tread shape of the matrix. On the other hand, the pre-cure method involves the application of a ready-made tread band on the buffed and prepared casing, which later is cured in an autoclave so that vulcanization can occur.<ref name="Bodziak" />