Click here for a virtual tour of the Michelin retreading process.

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.

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) Custom Mold™ Cushion Extrusion & Tread Building

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

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

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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