What is Retreading?

What is Retreading?

Retreading is the process where selected and inspected worn tyres called “casings” receive a new tread.

Types of Retreading


Precure retreading uses tread rubber that has already been vulcanized with the new tread design. Pre-Q offers a wide variety of precured tread designs and sizes to meet your needs.

Pre-Q Retread Products

Cushion Gum

Premium rubber material that is used to adhere the tread to the casing through the vulcanization process. It is available in low 99ºC (212ºF) and high temperature 150ºC (300ºF) versions.

Extruded Cushion Gum (Az)

Preformed premium rubber material in the form of strips for AZ extrusion and can also be used for mold cure as well.

Strip for Extrusion

Continuous strips with standard dimensions of 3 1/2 x 3/8, these measurements can be modified according to the client’s requirements. the product comes packed in cardboard boxes of 50 kg. (110.2 Lbs) or pallets of up to 900kg. (1984 Lbs).

Mini Extruder Rope Rubber

Premium rubber material is used in the retreading process to repair or fill damaged cavities before the vulcanization process.

Sidewall Cushion Gum

1 or 2-inch wide premium cushion rubber strips to improve the adhesion of the tread in the shoulder area. It also helps cover scuff marks and improves the overall cosmetic appearance of the tyre.

Mold Cure

Mold cure retreading uses non-vulcanized strip rubber that is applied directly to the top of the buffed tyre and then it is placed into a mold, which contains the tread design. The mold is then heated, which causes the rubber within the mold to vulcanize and adhere to the tyre.

Products for mold cure

Cold Die Size

Rolled material, has an integrated cushion protected with a plastic polyethylene film. Maximun dimensions 24″ (610 mm) wide an 48/32 (38 mm) thick. This product is vulcanized in mold.

Premium Die Size

Premium material for high mileage applications. It is cushioned and protected with a polyethylene plastic film. Maximum dimensions 24″ (610 mm) wide and 48/32 (38 mm) thick. This product is vulcanized in mold.

Mining Die Size

Roll material that has an integrated cushion and is protected with a polyethylene plastic film. Maximum dimensions 24″ (610 mm) wide and 48/32 (38 mm) thick. This product is vulcanized in the mold.

Cold Strip

The material is used during the Building process. It is packed in cardboard boxes and protected with a plastic polyethylene film. This product is un-vulcanized and is used with an extruder.

Premium Strip

Premium material to be extruded an vulcanized. It is packed in cardboard boxes and protected with polyethylene plastic film. This product is un-vulcanized and is used with an extruder.

Normal Cushion

Material used for repair and in the retreading process.

Wall Cushion

Rubber to protect the sidewalls of the tyre and also for bead to bead retreading. It comes perforated and coated with an anti-stick agent.

Natural Wall Cushion

Thicker material is used primarily to protect any exposed belts and/or to restore the base of convesional and retreaded tyres in the mold system at a temperature of 150º C (300º F).

Products for OTR Segments

GALGO “OTRead” brand pre-cured products are designed for use in mold cure systems and are manufactured with special compounds developed by GALGO for use in earth-moving applications (i.e., OTR) tyres. In segments ranging from 20” 4/8 (522 mm) to 26” (660 mm).

Products for OTR Segments

OTR Cushion

Premade materials in form of strips, used for extrusion and mold cure in the retreading process.

Recommended for OTR applications.

This cushion works for both mold cure and precure systems, and is available in low temperature (i.e., 100°C / 212° F) and high temperature (i.e., 150° C / 302° F) versions.

OTR Cement

High solids content for better adhesion to treads, extrusion strips, and fillers for the retreading process and OTR repairs. It can be vulcanized in-mold cure and direct stream.

Miniextruder Rope OTR

Material to repair and fill damaged cavities used for the OTR tyre retreading precess. This material con be vulcanized with the Pre-Q System, mold cure, and direct steam.


We manufacture and distribute a wide variety of plant supplies and accessories for retreading.


Universal type cement

Cement for retreading tyres, for pre-curing systems and mold vulcanizing system.
It is good to apply by spray or manual.
It is made of natural rubber, carbon black, oil and resins.
Presentation in metal cans 19 liters (5 gallons) or 200 liter drums for easy use and management in the warehouse.

Water based paint solution for tires

Mix of vinyl and acrylic resins in a water base solution.
Non-flammable and non-toxic formula.
It contains elastic properties to avoid cracking.
Will not attract dust.
Due to its formula, it will not stain skin.
It can be sprayed or brushed.

Rubber Wicking Pad

Improves sealing time of envelopes by vacuum. Made with rubber and resistant to high temperatures. Suitable for systems without rim with internal envelope and for system with rim trimming the ends.

Retreading Process

1. Initial inspection 

The casing is thoroughly inspected to determine if it can be retreaded.

2. Buffing & Skiving 

The remaining old tread is removed from the tyre.

3. Repair & Cementing 

Patches are used to repair punctures.

An adhesive coat with cement is applied to the skived part of the tyre.

4. Filling the injury & Preparing the tread

Injuries are filled with extruded rope rubber.

5. Building

The tread gets placed over the casing, using a high-tech building machine.

6. Tyre Preparation 

The tyre is placed inside an envelope to prepare it for the vulcanization process.

7. Curing

Tyres go through the vulcanization process in a chamber which securely adheres the tread to the casing.

8. Final Inspection

The tyre gets examined to ensure that all repairs are properly done. Once the tyres pass the final inspection, they move on to the final finishing stage.

Why Retread?


Retreading a tyre uses less oil than producing a new one; this way, we save natural resources and decrease the number of tyres in landfills.

Are retreads safe?

The real questions is, if retreads aren´t safe then why are they running on airplanes, school buses, ambulances, fire trucks, and many other critical applications?

Cost Savings. 

Retreading a premium quality tyre can result in a savings of 20% to 50% of the original cost of the tyre.

Tread Catalog


  • Road: For main roads of two or more lanes.
  • Distance: travels over 500 km.
  • Speed: Steady and sustained speed and high-speed periods.
  • Type of load: Heavy and medium.
  • Vehicle type: Truck, bus and trailer.
  • Features: Without stop & go

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DA – Drive Axle

LHT – Long Haul Traction

LPD – Low Profile Drive

LW – Long Wear

SAR – Angled Rib

SRL – Rib Light

STL – Trailer Long Haul

STW – Trailer Wide

SUSI – Super Single

WTS – Winter Trailer

  • Road: Regional roads with two way lanes with curves & slopes.
  • Distance: Less than 500km/day.
  • Speed: Moderate speeds up to 90km/h.
  • Type of load: Heavy & medium
  • Vehicletype: trucks, bus & trailer
  • Features: Hight stop and go

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CS – Combined Service

DGR – Drive Galgo Regional

DRD – Regional Drive Deep

LRD – Regional Drive Light

MS – Mud & Snow

NRD – Nordic

WMP – Winter Mileage Performance

WRD – Winter Regional Drive

APR – All Position Regional

B&C – Bus and Coach

BUS – Bus

GRS – Galgo Rounded Shoulder

MPO – Multi Positional

PDL – Pick Up & Delivery Light Truck

RRI – Rib Regional & Intercity

STR – Trailer Regional

  • Road: Secundary roads & aggressive surface.
  • Distance: Less than 150km/day.
  • Speed: Less than 70km/h.
  • Type of load: Specialized cargo, construction, agriculture & live stock
  • Vehicle Type: Truck & trailer.
  • Features: 70% On 30% off.

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AD – Aggresive Drive

ADT – Aggressive Drive Traction

ETW – Extreme Traction Wide

HPL – High Power Lug

KOP – Key On-Off Performance

LAD – Aggresive Drive-Light

LDT – Light Agressive Traction

SDP – Severe Drive Performance

WHL – Waste Hauler Lug

STC – Trailer Construction

  • Road: Extremely adverse, unpaved roads, mine, stone sharpstone road & mining blasting.
  • Distance: 50km/day.
  • Speed: Less than 40km/h.
  • Type of Load: Heavy, specialized, construction & mine.
  • Vehicle type: Ford single and double axle vehicles, trucks & specialized vehicules.
  • Features: 100% off

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LGT – Loader / Grader Traction