Family Owned & Operated Since 1955

RETREAD PROCESS

1) Grazing Light Inspection


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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

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Powerful electronic currents pinpoint otherwise invisible defects.

3) X-Ray Inspection

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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

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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)

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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

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Any necessary repairs are completed via heat curing, ensuring optimal adhesion and improved tear resistance.

7) Pre-Mold™ Builder Balance Improvement

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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

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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

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

10) Pre-Mold™ Curing

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

11) Custom Mold™ Cushion Extrusion & Tread Building

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STTC uses computer precision to control the extrusion of a single slab of uncured tread rubber, ensuring the proper casing and fit.

12) Custom Mold™ Curing

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Custom Mold retreads are cured in 10-segment presses, which provides tighter uniformity and results in an appearance similar to new Michelin tires.

13) Final Inspection

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

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