176C26B1 – Goodyear 160 MPH 12-Ply TT Rib Tire (301-319-211)
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The Goodyear 176C26B1 (OEM Part Number 301-319-211) is a high-performance, flight-critical main landing gear tire engineered for transport-category aircraft and heavy military platforms requiring high-speed ground roll capabilities. Rated for ground speeds up to 160 MPH, this 17.00-16 tube-type (TT) tire is designed to withstand the extreme thermal kinetic energy generated during high-gross-weight takeoffs and maximum-braking landings. The "Rib" tread pattern is specifically optimized for directional stability and hydroplaning resistance on improved runways.
Constructed with a 12-ply rating, the 176C26B1 utilizes a sophisticated carcass geometry that balances structural rigidity with the radial deflection necessary to absorb the high-impact loads of touchdown. As an OEM component for legacy and modern heavy-haul airframes, this tire is manufactured using Goodyear’s proprietary compound technology, which minimizes heat build-up—the primary cause of carcass fatigue and tread separation.
Key Features
160 MPH Speed Rating: Precision-engineered to maintain centrifugal integrity at high rotational velocities, exceeding the requirements for most short-field and high-altitude runway operations.
12-Ply Nylon Carcass: Features high-tensile nylon cords treated with a proprietary dip process to enhance adhesion between the rubber and the fabric, providing superior burst strength.
Tough-Wear Tread Compound: Formulated with high-grade carbon black and anti-ozonants to resist "chunking" and environmental degradation in extreme UV and ozone-rich ramp conditions.
Optimized Ribbed Tread: The multi-rib design provides excellent "lateral grip" and efficient water evacuation, reducing the risk of dynamic hydroplaning during wet-runway operations.
Tube-Type (TT) Versatility: Designed for use with a dedicated inner tube, allowing for reliable pressure retention in specialized wheel assemblies where tubeless sealing is not preferred.
Technical Specifications
Part Number: 176C26B1
Goodyear Item Code: 301-319-211
Size: 17.00-16
Ply Rating: 12
Type: Tube-Type (TT)
Tread Pattern: Rib
Speed Rating: 160 MPH (139 knots)
Overall Diameter: Approx. 17.00 inches (Nominal)
Section Width: Approx. 6.00 inches (Nominal)
Rim Diameter: 16 inches
Certification: FAA TSO-C62 compliant; manufactured in an ISO 9001 certified facility.
Aircraft Compatibility
Douglas DC-3 / C-47: Often utilized for specific heavy-duty or specialized main gear configurations.
Beechcraft 18 (C-45): Applicable to certain high-gross-weight modifications.
Lockheed P-2 Neptune: (Specific wheel variants).
Military Transport & Liaison Aircraft: Various legacy platforms utilizing 16-inch wheel hubs.
Note: The aircraft Illustrated Parts Catalog (IPC) or Supplemental Type Certificate (STC) must be used to verify the correct tire size, ply rating, and speed rating for your specific tail number.
Applications
The 176C26B1 is used for Main Landing Gear Support. Its primary function is to support the static weight of the aircraft and provide the traction necessary for safe braking and ground maneuvering. In high-speed applications, it acts as a primary energy absorber, protecting the landing gear struts and airframe from the peak force transients experienced during landing impact.
Why Choose 176C26B1?
Selecting the Goodyear 176C26B1 ensures that your aircraft is equipped with a tire that has undergone rigorous Dynamic Dynamometer Testing. Generic or under-rated tires risk bead unseating or internal cord melting during high-energy rejected takeoffs (RTOs). Goodyear’s quality control ensures that each tire meets the strict balance and run-out tolerances required to prevent "shimmy" and airframe vibration during high-speed ground rolls.
The 176C26B1 utilizes an orthotropic carcass design, where the orientation of the nylon plies is precision-layered to manage the hoop stress generated by high internal inflation pressures. The tire employs a dual-bead construction consisting of high-tensile steel wire bundles that anchor the tire to the 16-inch rim. During a high-speed landing at 139 knots, the tire undergoes significant hysteresis, converting mechanical energy into thermal energy. Goodyear's engineering ensures that the thermal diffusivity of the rubber compound allows heat to migrate away from the carcass plies to the outer surface, preventing "shoulder separation." The rib tread pattern is designed with a specific void-to-rubber ratio, optimizing the contact patch area to ensure maximum friction coefficients during braking without compromising the carcass's lateral stiffness.
Note: This is a flight-critical component. Prior to installation, inspect for flat spots, weather checking, or cord exposure. Always use a new inner tube of the correct size when replacing a tube-type tire. Inflation must be performed using a regulated nitrogen source in an approved safety cage. Installation must be performed by a certified A&P mechanic in accordance with the Aircraft Maintenance Manual (AMM) and Goodyear’s Care and Maintenance of Aircraft Tires manual.