Description
Bicycle Tire 20x2.125 (57-406) "Economy" (Diamond Tread)
An affordable bicycle tire of size 20x2.125 (ETRTO 57-406) with a versatile "Diamond" tread pattern is an accessible and practical solution for quickly replacing worn-out rubber on folding, city, and children's bicycles. The wide profile (57 mm) provides a smooth ride and stability on the road, while the small-block pattern with a dense central strip ensures easy rolling on asphalt and confident grip on compacted dirt.
Product Configuration Options:
- Tire only: An economical option for replacing the tire when the inner tube is intact.
- Set (Tire + Tube 20x2.125): A complete repair kit for a turnkey wheel upgrade.
Advantages and Features of the "Economy" Series:
- Minimum Price: An excellent choice for inexpensive repairs of an everyday bicycle without overpaying for premium brands.
- Versatile "Diamond" Tread: Small central lugs create a constant contact patch for quiet riding on asphalt, while side lugs keep the bicycle stable on turns and dirt paths.
- High Riding Comfort: The voluminous 2.125" tire effectively absorbs minor vibrations and sidewalk slab joints.
Compatibility and Application:
- Bicycles: City and folding bicycles with 20-inch wheel diameter (Aist, Desna, Salyut, Orlenok, Stels, Ardis, Formula, Discovery), as well as children's and youth models.
- Surface Type: City asphalt, sidewalk slabs, compacted park and dirt roads.
Technical Specifications:
| Parameter | Value / Characteristic |
|---|---|
| Part Type | Bicycle Tire |
| Marking (inches) | 20 x 2.125 |
| ETRTO Size (millimeters) | 57 - 406 (width 57 mm, rim diameter 406 mm) |
| Tread Pattern | "Diamond" / Small-block road-universal |
| Class / Category | Economy (Budget) |
| Carcass Construction | Wire Bead (strong steel wire bead) |
| Recommended Tube | 20x1.95 / 20x2.125 (AV / DV) |
Package Contents:
- Tire 20x2.125 "Economy" (of the selected configuration ā with or without tube) ā 1 pc.
Operating Tip: To extend the life of budget rubber, maintain optimal pressure of 2.5ā3.0 atm. Do not leave the bicycle in direct sunlight for extended periods to prevent the rubber compound from drying out.

