300-12 Coker Classic Bias Ply Blackwall Tire
Coker offers the world's most extensive line of Cushman Scooter tires and other model specific vintage scooter and mini-bike tires. These quality tires feature accurate sidewall markings and tread designs. Scooter & Mini-Bike tires from Coker Tire Company are available in several sizes and styles to fit many popular vintage scooters. Coker Tire Company also offers hundreds of vintage motorcycle tires and tubes that are excellent for restoration projects.
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.
Coker Classic Bias Ply Tires
Coker Classic bias ply tires are designed for classic cars and trucks, as well as hot rods and customs. With many popular sizes, including 670-15, 600-16 and alphanumeric sizes like L78-15, this product line fits many classic makes and models.
Coker Classic Brand Collector Vehicle Tires
Coker Tire was founded in 1958, focused on supplying the collector vehicle market with authentic tires. The Coker Classic brand is a favorite among car restorers and enthusiasts around the world. Coker was the first to develop the wide whitewall radial, and it's still one of its most popular product lines to this day. Coker Classic tires are offered in both bias ply and radial construction, using modern materials to ensure proper fitment and handling for your collector vehicle.
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.
| SKU | 71289 |
|---|---|
| Weight | 9.000000 |
| Brand | Coker Classic |
| Product Size | 300-12 |
| Tube Type or Tubeless | Tube Type |
| Rim Diameter | 12 inch |
| Tire Construction | Bias Ply |
| Tire Series | Classic Trials |
| Sidewall Style | Blackwall |
| Scooter Tire Sizes | 300-12 |
| Section Width (IN) | 2.87 |
| Overall Diameter (IN) | 18.23 |
| Availability Date | 2026-10-15T00:00:00Z |
300-12 Coker Classic Bias Ply Blackwall Bias Ply Tire
Frequently Asked Questions
Purchase Considerations â–¼
A non-original wheel does not automatically rule out using the Coker Classic Scooter Trials 300-12, but compatibility needs to be checked beyond the tire's 3.00-12 designation. Replacement wheels fitted during restorations or modifications may differ from the scooter's original setup, so confirming the wheel dimensions and suitability for this tire size is essential.
Pay particular attention to whether the tire can seat properly and whether there is sufficient room around the fender, fork, and suspension. Since this is a tube-type tire, the tube and wheel arrangement must also be compatible. Checking these details before ordering will help avoid fitment issues.
The Coker Classic Scooter Trials 300-12 is intended for vintage scooter applications, but the available product information does not specify a speed rating or confirm a suitable operating range for sustained highway use. It would therefore be unwise to assume that it is designed for extended high-speed travel.
Its bias ply construction is another factor to consider, as it delivers a different road feel from many modern tire designs. Before using it for longer journeys, check the tire's documented specifications against your scooter's requirements and intended riding conditions. Its vintage-oriented design should not be treated as a substitute for verified highway suitability.
Definitely. While 3.00-12 identifies the nominal tire size, the Coker Classic Scooter Trials 300-12 has listed inflated dimensions of approximately 2.87 inches in section width and 18.23 inches in overall diameter. These measurements provide a more useful reference when checking the available space on your scooter.
Keep in mind that the final dimensions can vary depending on rim width and inflation pressure. This is particularly relevant if your scooter has been modified or has limited clearance around the wheels. Compare the tire's dimensions with your actual setup rather than relying on the size designation alone.
If you're unsure about your scooter's original tire specifications, it's worth establishing the correct size before choosing the Coker Classic Scooter Trials 300-12. This tire is identified as a 3.00-12 option for vintage scooter and mini-bike applications, but that alone does not confirm that it is suitable for every older scooter.
Start by checking the markings on your existing tire and inspecting the wheel itself. Also consider whether previous owners have changed the wheels, suspension, or other components. On a restored or modified scooter, the currently installed tire may not reflect the original specification, so verifying the complete setup is a better approach than choosing based on appearance alone.
Fitment & Compatibility â–¼
The Coker Classic Scooter Trials 300-12 is designed specifically for vintage scooters and mini-bikes that originally used a 3.00-12 tire size. The most important factor is verifying that your current tire size matches the 300-12 designation shown on the sidewall or listed in your owner's documentation. Vintage scooters often use unique sizing conventions, making direct size confirmation essential.
Because older scooters and mini-bikes can have modified wheels or replacement components installed over decades of ownership, buyers should verify wheel diameter and tire clearance before ordering. Matching the original tire size typically preserves intended handling characteristics, steering response, ride height, and overall appearance while minimizing fitment surprises during installation.
The Coker Classic Scooter Trials 300-12 is positioned as a vintage scooter tire featuring period-style tread design and accurate sidewall markings. These details make it particularly attractive for restoration enthusiasts who want a tire that visually complements the original appearance of a classic scooter or mini-bike.
For show-quality restorations, sidewall appearance and tread authenticity often matter as much as basic fitment. The tire's traditional bias ply construction further supports period-correct presentation. Owners seeking modern styling or contemporary scooter performance characteristics may prefer other tire types, but restorers generally prioritize authenticity and era-appropriate appearance.
When installed on a scooter originally designed for a 3.00-12 tire, the Coker Classic Scooter Trials 300-12 should generally maintain the intended relationship between the tire and surrounding bodywork. Using the original size helps minimize the risk of interference with fenders, fork assemblies, and chassis components.
Clearance verification remains important because vintage scooters often accumulate decades of modifications. Replacement wheels, altered suspension settings, and previous repairs can affect available space. Inspecting both static clearance and loaded clearance can help identify potential contact points before regular riding begins.
Tire Size Equivalents & Conversions â–¼
The 300-12 designation identifies a traditional tire sizing format commonly found on vintage scooters and mini-bikes. The "300" refers to the nominal tire width, while the "12" indicates the wheel diameter in inches. This sizing system was widely used before modern metric tire designations became common.
Understanding the original size format helps owners maintain restoration accuracy. Matching the original tire size typically preserves steering geometry, ride height, and appearance. Buyers should avoid assuming that modern metric sizes are exact replacements without comparing dimensions and fitment requirements carefully.
In most cases, the Coker Classic Scooter Trials 300-12 can serve as a direct replacement for another tire carrying the same 3.00-12 size designation. Matching size specifications is the safest starting point when replacing vintage scooter tires.
Even when the sidewall size matches, buyers should remember that tire dimensions can vary slightly between manufacturers and construction styles. Measuring available clearance and confirming wheel compatibility remain worthwhile steps, especially on heavily restored or modified scooters where tolerances may already be tight.
If the Coker Classic Scooter Trials 300-12 replaces a different tire size, speedometer accuracy can potentially change because tire diameter influences wheel revolutions per mile. Larger diameters generally reduce indicated speed, while smaller diameters can increase indicated speed readings.
Maintaining the original 3.00-12 size specification is usually the best way to preserve factory speedometer behavior. Even small dimensional differences can affect readings over time, making size consistency an often-overlooked factor during restoration and maintenance planning.
Performance & Use Case â–¼
The Coker Classic Scooter Trials 300-12 is designed around traditional bias ply construction, delivering the riding characteristics commonly associated with vintage scooters. Riders can generally expect a classic feel that complements older chassis designs and preserves the personality of period-correct machines.
Because bias ply tires flex differently than many modern alternatives, steering and ride behavior may feel more traditional. Enthusiasts often appreciate this authentic response, particularly when the goal is recreating the original riding experience rather than maximizing contemporary performance characteristics.
At lower speeds, the Coker Classic Scooter Trials 300-12 should provide the predictable behavior expected from a traditional scooter tire. Vintage scooters were originally engineered around bias ply designs, making the construction type familiar to the vehicle's intended handling characteristics.
Urban riders often prioritize maneuverability, period-correct appearance, and predictable response over outright performance. Retaining the original tire style helps maintain the classic riding experience while supporting the visual authenticity valued by restoration enthusiasts and collectors.
The Coker Classic Scooter Trials 300-12 is particularly well suited to scooters that balance appearance and functionality. Its authentic styling, period-correct markings, and traditional construction make it attractive for display-oriented restorations.
At the same time, the tire remains a functional riding tire rather than a display-only component. Owners who attend shows, local gatherings, and occasional recreational rides can benefit from maintaining authenticity while still preserving practical usability.
Construction, Durability & Load Capacity â–¼
The Coker Classic Scooter Trials 300-12 uses bias ply construction, a design that was widely used throughout much of automotive and motorcycle history. The casing uses overlapping cord layers arranged diagonally, creating a strong and traditional tire structure.
Bias ply construction is valued by restoration enthusiasts because it reflects original equipment technology used during the era of many vintage scooters. The construction contributes significantly to the tire's appearance, ride characteristics, and overall authenticity.
The primary reason is historical authenticity. Bias ply construction was the standard design for many vintage scooters, making it the appropriate choice for restorations that prioritize originality and period-correct driving characteristics.
Construction type affects more than appearance. It also influences steering feel, sidewall behavior, and road feedback. Buyers seeking a restoration-focused product often choose bias ply tires specifically because they preserve the personality and driving experience associated with classic machines.
Installation & Maintenance â–¼
Many vintage scooter wheel designs use inner tubes, and the product page references a compatible 275/300-12 tube option. Buyers should inspect their wheel configuration and confirm whether tube-type installation is required for their specific application.
Using the correct tube size helps support proper fitment and reliable operation. During installation, owners should also inspect the wheel for corrosion, damage, or sharp edges that could affect tube longevity and overall tire performance.
Proper inflation is one of the most important factors affecting tire performance, wear, and durability. Maintaining recommended pressure helps preserve handling consistency and supports even tread wear throughout the tire's service life.
Inflation pressure also influences ride quality and heat generation. Because vintage scooters are often stored for extended periods, owners should make pressure checks part of their regular maintenance routine rather than assuming pressures remain unchanged.