Product Specification

Product Name: 1200R20 20PR Standard-Load Ordinary Retreaded Heavy-Duty Radial Tire

Applicable Vehicle Models: Standard-load freight vehicles; suitable for standard-load vehicle models based on gross vehicle and cargo weight.

Main Technical Parameters

Wear Resistance
Abrasion index: 105, based on the national standard benchmark of 100. With a tread pattern depth of 15.7 mm and an optimized rubber formula, the tire offers approximately 20% better wear resistance than ordinary tires of the same specification, making it suitable for normal road conditions.

Puncture Resistance
The tread base uses a standard design with steel belt protection. Resistance to punctures from nails and gravel is at a standard level. The sidewall is equipped with a standard puncture-resistant rubber layer to reduce the risk of cuts from road shoulders and gravel.

Design Features
No run-flat reinforced structure is included. The tire uses standard sidewall support rubber and belongs to standard-load conventional technology, meeting daily transport needs under gross vehicle and cargo weight conditions.

Structure

1200R20-20PR standard-load ordinary retreaded radial steel tire.

1. Overall Steel Radial Structure
This tire is an all-steel radial heavy-duty tire. The carcass steel cords are arranged radially along the tire, in a 90-degree direction perpendicular to the bead. The belt steel cords wrap around the circumference at a low angle to form a rigid belt structure. Compared with older bias tires, this design provides high strength, low heat generation, and standard-load durability.

2. Layer Structure, From Inside to Outside

Carcass Ply Layer, Radial Carcass

• Number of layers: 1 layer of high-strength steel cord fabric, forming an all-steel radial structure.
• Cord arrangement: Radial 90-degree arrangement. The force follows the radial direction of the tire, enabling uniform carcass deformation under standard load, improving flex resistance, and reducing repeated compression cracking.
• Bead area: The steel cords are turned up and reinforced, extending to the upper-middle position of the sidewall. Together with standard support rubber, this improves sidewall compression resistance.
• Compared with bias tires: Bias tires use multiple crossed fabric layers, generating more heat and aging more easily. The single-layer steel radial carcass has smaller deformation, better heat dissipation, and greatly improved durability.

Belt System, 4 Layers of Steel Belts

• Layers 1 and 2: High-elongation steel cord fabric, cushioning impacts and absorbing road bump impact force.
• Layers 3 and 4: High-modulus, low-angle steel layers, wrapping around the circumference at approximately 18-22 degrees, rigidly tightening the tread.
• Function: Restrains tread deformation, stabilizes the tread contact area, improves puncture resistance and wear resistance, suppresses tread warping under standard load, reduces tread block chunking, and improves durability.

Tread Rubber Layer

• Upper tread layer: Standard wear-resistant rubber formula, matched with a standard pattern at 15.7 mm tread depth, suitable for normal roads.
• Tread base rubber: Low-heat buffer rubber, isolating impacts, protecting the belt steel cords, and preventing hard objects from directly striking the steel cords and causing cord breakage.

Advantages of All-Steel Material
Steel cords have much higher strength than fiber cords, with resistance to tension and impact. The 20PR ply rating design is suitable for standard gross vehicle and cargo load and normal road conditions.

Technical Precautions for Use

1. Avoid impacts with sharp hard objects, overloading, and long-term operation with insufficient tire pressure, as these can easily damage the tire. It is strictly prohibited to drive beyond the gross vehicle and cargo weight limit of each vehicle type.

2. Strictly follow the inflation pressure standard. Regularly check whether the tread and sidewall have damage or bulging, and regularly check tire pressure.

3. This product is designed for standard load only. It is suitable only for standard-load gross vehicle and cargo weight conditions and normal roads. It is not suitable for harsh engineering road conditions or overloaded transport; otherwise, the tire service life will be greatly shortened.