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8.25-R16 S1T4

Specification 

  • 8.25: Indicates the tire's nominal cross-section width in inches (approximately 8.25 inches or 210 mm).
  • R: Signifies Radial construction, meaning the internal carcass plies are oriented at 90 degrees to the direction of travel, which is the standard for most modern tires.
  • 16: Denotes the diameter of the wheel rim that the tire is designed to fit, measured in inches.
  • S1T4: This is a manufacturer-specific code (likely MRF, based on search results) that identifies the specific model, tread pattern, and potential application or ply rating.
  • S1T4 specifically corresponds to the MRF Steel Muscle-S1T4 model, known for use in light commercial vehicles (LCVs) or intermediate commercial vehicles (ICVs). 

Description

  • Application: This tire size is commonly used on light trucks, buses, and commercial vehicles, often in applications that require enhanced stability and load capacity.
  • Construction: It is a robust, all-terrain or on-road tire, typically featuring a strong casing designed for durability and high mileage.
  • Design Features (MRF S1T4 Model):
    • Tread Pattern: Features a unique tread pattern designed to provide high mileage and prevent side sliding, especially on wet roads.
    • Durability: Known for a strong casing that offers better retreadability, extending the tire's service life.
    • Type: It is generally a tube type (TT) tire.
  • Load and Speed Ratings: While specific ratings can vary by exact product and ply rating (e.g., 16PR is common for this size), an example specification has a load index/speed symbol of 129/127L, corresponding to a max load of around 1850 kg (single) and a max speed of 120 km/h (75 mph).
  • Physical Dimensions (Approximate):
    • Overall width: 8.25 inches (nominal)
    • Overall diameter: Approximately 32 inches
    • Ply Rating: Often 16PR (Ply Rating) which indicates a heavy-duty Load Range H.
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