Retread Tire Process

Retread Processes

1) Grazing Light Inspection

A unique grazing light technique is used from shoulder to bead to detect subtle irregularities that might indicate potential problem areas.

2) Electronic Liner Inspection

Powerful electronic currents pinpoint otherwise invisible defects.

3) X-Ray Inspection

Suspected steel damage, identified during grazing light inspection, is examined by fluoroscopic x-ray. This advanced x-ray system reveals the status of the steel belts and cables hidden within the casing.

4) Radial Buffing

A computer-controlled radial buffing system is used to ensure optimal undertread depth. Precise buffing is critical to retread performance as a correct undertread contour promotes long, even treadware.

5) Casing Integrity Analyzer® (CIA)

The MRT laser-light Casing Integrity Analyzer uses laser beams to map the inner contour of the casing, spotting any hidden separations.

6) Heat Cure Repairs

Any necessary repairs are completed via heat curing, ensuring optimal adhesion and improved tear resistance. A heat cured repair will last longer than chemical repairs used by other processes.

7) Pre-Mold™ Builder Balance Improvement

MRT Builder Balance Improvement is used to index tread and cushion joints, guaranteeing a better, smoother ride with less irregular wear.

8) Pre-Mold™ Cushion Extrusion & Tread Building

Hot cushion gum is extruded onto the tire casing, creating a strong tread-to-casing bond. Our computer-controlled Tread Builder ensures correct tread positioning.

9) Enveloping

Pre-Mold retreads are double-vacuum-enveloped, creating uniform mechanical pressure that promotes full integration of repairs.

10) Pre-Mold™ Curing

Pre-Mold retreads are cured to Michelin protocols for time, temperature, and pressure.

11) Final Inspection

No retread leaves the STTC plant without undergoing a comprehensive final inspection, ensuring that all finished retreads adhere to Michelin’s stringent quality standards.

Work with a qualified retreading company to ensure quality tires

The only way you can be assured of the quality of the retread tires delivered to your fleet is by working with a qualified retreading firm like STTC and discussing their tire analysis and testing work with them. Come find out more about our process by contacting us for a plant tour. We are certain you will be impressed by our facilities. STTC also employes a casing asset management program that will define the specifications acceptable for capping your tires; such as how many times it has been capped, the age, and how many repairs are necessary.