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STA Transport Highway Tread | 750-20

Expected Delivery - November 13, 2026

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750-20 Transport Highway Blackwall Tire

With its unique rib design for long mileage and cool running over highways, these heavy duty truck tires are superior for light trucks including SUV's, 4x4's, vans, campers and motor homes. The STA Super Transport highway truck tires also features a wide profile that enhances traction and flotation. STA Transport tires are available in 15- through 20-inch sizes. Tread may vary slightly between sizes. Made in USA!

Blackwall Tire

Since the introduction of carbon black rocked the tire industry, the original recipe for most tires has been a solid black sidewall. For classics and collector cars alike, it's hard to beat the no-nonsense appeal of a classic blackwall style tire. British sports car, classic truck and even hot rod enthusiasts love the way a nice period correct blackwall tire looks on their vehicles.

Bias Ply Construction

Bias ply tire construction is a method that was used from the 1900's through the 1970's on passenger cars and light trucks. Bias ply tires feature ply cords that run at a 45 degree angle to the bead, and overlap in a crisscross pattern, depending on how many ply layers are used. This creates a strong tire, but bias ply tires have a tendency to follow breaks or ruts in the pavement. Bias ply tires are the most authentic choice for classic car restorations and traditional hot rod builds. Coker Tire offers a huge variety of bias ply tires for many applications.

STA Transport Highway Tires

STA Transport Highway tires are bias ply tires with a classic highway tread. These tires can be used for trucks or trailers and feature a heavy-duty construction to withstand heavy loads.

Specialty Tires of America

Discover the rugged reliability of STA Super Lug tires, designed to conquer any terrain with confidence. Whether you're tackling off-road adventures or navigating challenging landscapes, the STA Super Lug is your trusted companion. For those seeking a balance of traction and comfort, explore the STA Super Traxion series. These tires are crafted with precision to provide optimal performance on various surfaces, making them a versatile choice for your vehicle. At Coker Tire, we understand the importance of durability and dependability. That's why we proudly offer a wide selection of STA Tires, known for their robust construction and exceptional performance. From off-road enthusiasts to everyday drivers, STA Tires deliver a smooth and reliable driving experience.

Please Note

  • Tire mounted on wheel for demonstration purposes only. Wheel and other accessories are not included. Please note that dimensions listed (tread width, section width and overall diameter) are non-scientific and based on an inflated tire, mounted to a wheel. Dimensions may vary due to rim width and inflation pressure.
SPECIFICATIONS
SKU 77503
Weight 54.000000
Brand STA
Product Size 750-20
Tube Type or Tubeless Tube Type
Rim Diameter 20 inch
Tire Construction Bias Ply
Tire Series Transport Highway
Sidewall Style Blackwall
Width Bias Ply 7.50
Max Load Capacity (LBS) 3530@90 psi
Section Width (IN) 8.9
Rim Width (in) 5.00 - 5.50
Overall Diameter (IN) 37.4
Availability Date 2024-01-29T00:00:00Z

This STA Transport Highway Tread comes in the 750-20 size, suitable for the classic and collector vehicles listed below.

About the 750-20 Tire Size

The 750-20 tire size is the size associated with this STA Transport Highway Tread, a bias ply tire for vehicles using this period-correct numeric sizing format. Shoppers viewing this product are typically looking for a 750-20 application and a traditional highway-tread bias ply tire in that exact size. For more detailed information on this tire size, explore the 750-20 tire on Coker Tire Fitment Guide.

Frequently Asked Questions

Fitment & Compatibility â–¼

Can the STA Transport Highway Tread 750-20 tire be used on both trucks and trailers? â–¼

Yes, the STA Transport Highway Tread 750-20 tire is suitable for both trucks and trailers due to its heavy-duty construction and high load capacity of 3530 lbs at 90 psi. This makes it a versatile option for vintage haulers, service trucks, and period-correct trailers.

However, driving dynamics differ between powered and non-powered axles. On trailers, the tire benefits from reduced steering demands, while on trucks it must handle directional control. Proper inflation and load distribution are critical to ensure even wear and stable performance in both applications.

Will upgrading brakes or suspension affect fitment of the STA Transport Highway Tread 750-20 tire? â–¼

Yes, brake and suspension upgrades can impact fitment of the STA Transport Highway Tread 750-20 tire. Disc brake conversions may alter wheel offset or require different wheel designs that may not support the narrow rim width range.

Suspension modifications such as lifts or lowered setups can also change clearance dynamics, especially under compression. The large diameter and bias ply sidewall behavior make this tire sensitive to alignment and geometry changes. Always verify compatibility after modifications to avoid interference or uneven wear.

Tire Size Equivalents & Conversions â–¼

How does the 37.4-inch diameter of the STA Transport Highway Tread 750-20 tire affect speedometer accuracy? â–¼

The 37.4-inch overall diameter of the STA Transport Highway Tread 750-20 tire can significantly impact speedometer readings if replacing a smaller tire. A larger diameter means the vehicle travels farther per revolution, causing the speedometer to read slower than actual speed.

For example, if upgrading from a smaller tire, your actual speed may be higher than indicated. This can affect both driving safety and mileage tracking. In many cases, recalibration of the speedometer or adjustment of gearing may be necessary to maintain accurate readings.

Does the STA Transport Highway Tread 750-20 tire change gearing or drivetrain performance? â–¼

Yes, the large 37.4-inch diameter of the STA Transport Highway Tread 750-20 tire effectively changes the vehicle’s gearing. A taller tire reduces engine RPM at a given speed, which can improve highway cruising but reduce low-end torque.

This can make acceleration feel slower, especially in vehicles with original gearing. For heavy loads or hilly terrain, this may impact performance. In some cases, differential gearing adjustments may be needed to maintain optimal drivability.

Performance & Use Case â–¼

Is the STA Transport Highway Tread 750-20 tire suitable for long-distance driving? â–¼

Yes, the STA Transport Highway Tread 750-20 tire is built for long-distance highway use, with a tread design focused on durability and heat management. Its construction supports sustained driving under load when properly inflated.

That said, bias ply tires require more attention to pressure and load conditions than radials. Heat buildup can still occur if underinflated or overloaded. Regular checks and conservative driving speeds will help ensure consistent performance over long distances.

How does the STA Transport Highway Tread 750-20 tire handle under heavy loads? â–¼

With a maximum load capacity of 3530 lbs at 90 psi, the STA Transport Highway Tread 750-20 tire is well-suited for heavy-duty applications. Its bias ply construction provides strong sidewalls that support weight effectively.

However, load performance is highly dependent on maintaining proper inflation. Underinflation can lead to excessive heat and sidewall stress. For optimal durability, always match tire pressure to load conditions and avoid exceeding rated capacity.

Is the STA Transport Highway Tread 750-20 tire good for off-road use? â–¼

The STA Transport Highway Tread 750-20 tire is not optimized for off-road use, as its tread pattern is designed for highway performance. While it can handle light off-road conditions, it does not provide the traction of lug-style tires.

Its wide profile may offer some flotation on soft surfaces, but lack of aggressive tread limits grip in mud or loose terrain. For dedicated off-road use, a different tread design would be more appropriate.

Construction, Durability & Load Capacity â–¼

What does bias ply construction mean for the STA Transport Highway Tread 750-20 tire? â–¼

The STA Transport Highway Tread 750-20 tire uses bias ply construction, where internal cords are layered diagonally in a crisscross pattern. This creates a strong, durable structure ideal for carrying heavy loads.

This construction also results in more sidewall flex and road feedback compared to radial tires. While it enhances durability and period correctness, it requires a different driving approach, especially at highway speeds.

How important is maintaining 90 psi in the STA Transport Highway Tread 750-20 tire? â–¼

Maintaining the correct pressure, up to 90 psi for maximum load, is critical for the STA Transport Highway Tread 750-20 tire. Proper inflation ensures optimal load capacity and reduces heat buildup.

Running below recommended pressure can cause excessive flex and overheating, while overinflation may reduce contact patch and traction. Regular pressure checks are essential for safety and performance.

Does the STA Transport Highway Tread 750-20 tire run cooler than other bias ply tires? â–¼

The STA Transport Highway Tread 750-20 tire is designed with a highway rib tread that promotes cooler running compared to more aggressive patterns. This helps extend tire life during long-distance driving.

However, it still generates more heat than radial tires under similar conditions. Proper inflation and moderate speeds are key to managing heat buildup effectively.

Installation & Maintenance â–¼

What type of tube should be used with the STA Transport Highway Tread 750-20 tire? â–¼

The STA Transport Highway Tread 750-20 tire requires a tube specifically sized for 7.50-20 applications, typically with a compatible valve stem such as a TR440 for proper fitment.

It is important to use high-quality tubes designed for heavy-duty use. Matching the tube to the tire size ensures proper seating and reduces the risk of pinch flats or uneven pressure distribution.

How should the STA Transport Highway Tread 750-20 tire be inflated for best performance? â–¼

The STA Transport Highway Tread 750-20 tire should be inflated based on load requirements, up to a maximum of 90 psi for full capacity. Adjusting pressure according to load helps optimize performance and longevity.

Regular pressure checks are essential, especially before long trips or heavy hauling. Consistent inflation prevents uneven wear and reduces the risk of overheating.

What maintenance practices extend the life of the STA Transport Highway Tread 750-20 tire? â–¼

Extending the life of the STA Transport Highway Tread 750-20 tire requires regular pressure checks, proper load management, and routine inspections. Keeping the tire within its rated limits is essential.

Additionally, rotating tires and ensuring proper alignment can help prevent uneven wear. Using quality tubes and maintaining correct installation practices also contribute to long-term durability.

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