Retread Process

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

grazing light tire inspection video

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.

tire electronic liner inspection video

2) Electronic Liner Inspection

Powerful electronic currents pinpoint otherwise invisible defects.

tire xray inspection video

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.

tire radial buffing video

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.

tire casing integrity analyzer video

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.

truck tire heat cure repair video

6) Heat Cure Repairs

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

pre-mold builder balance improvement video

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.

pre-mold cushion extrusion & tread building video

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.

pre-mold cushion extrusion & tread building video

9) Enveloping

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

tire enveloping video

10) Pre-Mold™ Curing

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

truck tire pre-mold curing

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.

custom mold cushion extrusion & tread building video

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.

truck tire inspection video

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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