Specifications at a glance
The Towstar STR is a high-quality ST Radial tire designed and engineered in the USA specifically for trailer applications. As a leading choice for many original equipment trailer manufacturers, Towstar has built a reputation for reliability, safety, and durability. The STR is built to handle heavy loads and provide stable, predictable performance on the highway, making it an ideal choice for owners of RVs, utility trailers, boat trailers, and more in the Atlanta and Marietta, Georgia areas.
Tread Design and Longevity
The Towstar STR is engineered for a long service life and even wear under heavy trailer loads.
Key features of the tread design include:
- Enhanced Shoulder Design: The tire features a specialized shoulder design that effectively dissipates heat, which is a major cause of premature wear in trailer tires. This leads to a longer and more even-wearing tread life.
- Solid Center Rib: A continuous, solid center rib provides excellent straight-line stability and ensures the trailer tracks consistently behind the tow vehicle, reducing sway.
- Durable All-Season Compound: The tire is made with a robust, all-season compound that resists wear and provides reliable performance throughout the year.
- Nylon Overlay Construction: For added strength and durability, 15″ and 16″ sizes of the Towstar STR feature a nylon overlay, which helps maintain the tire’s shape and integrity at highway speeds.
Performance and Safety
Safety and reliability are paramount in a trailer tire, and the Towstar STR delivers on both fronts.
- Excellent Highway Stability: The symmetric ribbed tread design and solid center rib work together to provide a stable and secure towing experience, minimizing trailer sway.
- All-Season Traction: With four wide circumferential grooves, the STR effectively evacuates water from the contact patch, resisting hydroplaning and providing confident traction on wet roads.
- High Load Capacity: The Towstar STR in size ST235/85R16 features a Load Range F (12-Ply) rating, supported by a reinforced internal structure. This allows it to carry a maximum load of 3,960 lbs per tire, making it suitable for heavy-duty trailers.
- Purpose-Built for Trailers: Unlike passenger or light truck tires, the STR is specifically constructed to handle the unique vertical loads and stresses of trailer applications, ensuring a higher margin of safety.
Available Sizes
This product description covers the heavy-duty 16-inch trailer size:
- ST235/85R16: A common size for large travel trailers, fifth-wheels, gooseneck trailers, and heavy equipment haulers, featuring a robust Load Range F (12-Ply) construction.
Trailer and Owner Benefits
The Towstar STR provides peace of mind and excellent value for trailer owners.
Key benefits include:
- Enhanced Towing Safety: The stable design and reliable traction provide a safer and more controlled towing experience.
- Long-Lasting Durability: The heat-dissipating shoulder and durable construction ensure you get the maximum life out of your tires.
- Reduced Trailer Sway: The solid center rib helps the trailer track straight, reducing driver fatigue and improving overall stability.
- OE-Trusted Quality: As a prominent choice for original equipment trailer manufacturers, you can be confident in the quality and performance of Towstar tires.
Ideal Applications
The Towstar STR is the perfect tire for a wide range of trailer types:
- RV and Travel Trailers
- Fifth-Wheel Campers
- Gooseneck and Flatbed Trailers
- Utility and Cargo Trailers
- Boat Trailers
- Livestock and Horse Trailers
Why Choose Towstar STR?
Choosing the Towstar STR provides:
- A tire specifically designed and built for the demands of trailer service.
- The reliability and quality trusted by leading trailer manufacturers.
- Excellent stability and heat resistance for a long and safe service life.
- A cost-effective solution for replacing your worn-out trailer tires.










