GR70-15 Wide Oval Radial RWL Tire
The Firestone Wide Oval Radial tire bridges the gap between authentic bias ply tires and modern radials. It is designed and manufactured in the USA, using new molds and modern materials. This tire features authentic sidewall markings and tread pattern, with radial construction. This is the ultimate muscle car tire! The Firestone Wide Oval Radial offers fitments for most muscle car applications. Features include correct sidewall markings, even down to the correct size of the letters. It's time to put a set of Firestone Wide Oval radials on your muscle car.
Genuine Raised White Letter Tire
This is a raised white letter tire, sometimes called RWL for short. Raised white letter tires became common in the late sixties on muscle cars like the Pontiac GTO and high performance pony cars, like the Ford Mustang. Raised white letter tires feature white rubber that is built into the tire's sidewall when the carcass is being assembled. The letters are formed when the tire is vulcanized in a curing mold, and then buffed clean to reveal bright white letters. Look for this classic style from our featured brands like Pro-Trac, Firestone Wide Oval and BFGoodrich Radial T/A tires.
S Speed Rating
S Speed Rated: Up to 112 mph (180 km/h). Often required OE for higher performance trim level classic automobiles.
Bias Look Radial Tire
The term "bias look radial" is something that Coker Tire created when we introduced the American Classic bias look radial product line. This means the tire has the appearance and the sizing profiles of a vintage bias ply tire, with modern radial construction. This provides an original look with a smooth ride and longer tread life, compared to bias ply tires. We offer bias look radial tires for vehicles ranging from the 1920's through the 1970's.
Firestone Wide Oval Radial Tires
Firestone Wide Oval radial tires take the popular styling and fitment of the original bias ply Wide Oval and give it the excellent handling and ride quality of a modern radial. Available in 10 sizes, the Firestone Wide Oval radial product line is a favorite for muscle car enthusiasts.
AWARD WINNER!
The SEMA Automotive Restoration Market Organization (ARMO) awarded Coker Tire a 2025 Best New Product award in the Drivetrain, Brakes and Suspension category, recognizing the Firestone Wide Oval radial size product line expansion.
Firestone Tires for Collector Vehicles
The vintage line of Firestone tires fits a wide range of cars, trucks and motorcycles built from the 1900's through the 1970's. Firestone Non Skid tires, Firestone Deluxe Champion tires, Firestone Wide Oval tires and many more famous styles and sizes are available to fit military vehicles, motorcycles and classic commercial trucks. With whitewalls, redlines, raised white letters and other classic sidewall styles, this product line is one of the most extensive and popular brands for classic cars.
Please Note
- Bias Look Radial tires feature genuine radial tire construction with bias ply tire size, profile and styling. These tires are built in brand new molds using modern materials and tooling. Typically the sizing is the same as their Bias Ply equivalents with the addition of 'R' in the size value. 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. Please note Chemical Guys Tire and Rubber Cleaner and Adams Polish Tire shine has been linked to Whitewall browning and should not be used. We recommend using our line of tire care products.
| SKU | 62680 |
|---|---|
| Weight | 27.000000 |
| GTIN | 00842199106633 |
| Availability Date | 2026-12-31T00:00:00Z |
| Brand | Firestone |
| Tire Construction | Bias Look Radial |
| Tire Series | Wide Oval Radial |
| Sidewall Style | RWL |
| Product Size | GR70-15 B-TW |
| Construction Ply | 5 ply 4/B PR Poly/Steel/Nylon |
| Tread Width (IN) | 6.70 |
| Tread Depth (32nds) | 14 |
| Static Radius | 12.03 |
| Rim Diameter | 15 inch |
| Width Bias Look Radial | G |
| Radial Aspect Ratio | 70 |
| Overall Diameter (IN) | 27.40 |
| Section Width (IN) | 8.70 |
| Rim Width (in) | 5.50 - 8.00 |
| Max Load Capacity (LBS) | 1620 lbs @ 32psi |
| Speed Rating | S |
| DOT Approved | Yes |
| Tube Type or Tubeless | Tubeless |
| Service Description | 97S |
| Revolutions per mile | 825.67 |
This Firestone Wide Oval Radial | RWL | GR70-15 comes in the GR70-15-B-TW size, suitable for the classic and collector vehicles listed below.
About the GR70-15-B-TW Tire Size
GR70-15-B-TW is the tire size associated with this Firestone Wide Oval Radial | RWL | GR70-15 product. In this case, the product name identifies it as a radial tire with raised white letters, making the size relevant to shoppers looking for that combination in a period-style fitment. For more detailed information on this tire size, explore the GR70-15-B-TW tire on Coker Tire Fitment Guide.
Frequently Raised Questions
Fitment & Compatibility â–¼
The Firestone Wide Oval Radial RWL GR70-15 is designed for classic performance vehicles that require a 15-inch tire with vintage styling and modern radial construction. The GR70-15 size was commonly associated with muscle cars and collector vehicles, making it a strong choice for restorations and drivers who want an original-style appearance with improved radial ride characteristics.
Before purchasing, confirm your vehicle's original tire requirements, wheel size, and available clearance. The tire measures approximately 27.40 inches in overall diameter with an 8.70-inch section width, so checking fender, suspension, and wheelwell space helps ensure proper fitment.
The Firestone Wide Oval Radial RWL GR70-15 fits many classic muscle car and collector vehicle applications that originally used G70-15 or similar sizing. The product page lists fitments including various Chevrolet Impala, Monte Carlo, Bel Air, Biscayne, and Ford performance applications from the late 1960s and early 1970s.
Because vehicle fitment can vary by year, trim level, suspension package, and wheel options, buyers should confirm their original specifications before ordering. The GR70-15 size is especially popular among enthusiasts who want the authentic Wide Oval appearance while upgrading to radial construction for improved everyday drivability.
The Firestone Wide Oval Radial RWL GR70-15 is designed to fit wheels between 5.50 and 8.00 inches wide. Staying within this range helps the tire maintain the correct shape, sidewall appearance, and contact patch characteristics intended by the manufacturer.
Wheel width can influence the tire's stance and handling feel. A narrower or wider wheel may change the way the sidewall sits and could affect clearance inside the wheelwell. For restoration-focused builds, using a wheel width close to the original specification helps preserve the authentic muscle car appearance while allowing the radial construction to deliver smoother driving characteristics.
Tire Size Equivalents & Conversions â–¼
The Firestone Wide Oval Radial RWL GR70-15 has an overall diameter of approximately 27.40 inches. Overall diameter affects several aspects of vehicle behavior, including ride height, gearing, speedometer accuracy, and the relationship between the tire and wheelwell.
Maintaining a similar diameter to the original tire helps preserve the vehicle's intended stance and driving characteristics. A noticeable diameter change can alter engine RPM at cruising speed and may affect how the vehicle sits visually. Checking diameter before installation helps ensure the tire complements the original design or modified setup.
The 70-series profile of the Firestone Wide Oval Radial RWL GR70-15 contributes to its classic muscle car appearance. The taller sidewall creates the traditional proportions associated with late 1960s and early 1970s performance vehicles.
Sidewall height affects more than appearance. It can influence ride comfort, steering response, and the amount of flex during driving. The GR70-15 profile helps maintain the vintage stance enthusiasts expect while the radial construction improves ride quality compared with traditional bias ply designs.
Published tire measurements can vary slightly depending on rim width and inflation pressure. The Firestone Wide Oval Radial RWL GR70-15 specifications are based on an inflated tire mounted to a wheel, so the final installed dimensions may change depending on the actual setup.
Comparing mounted dimensions before purchase helps verify clearance and fitment. This is especially important on classic cars with limited wheelwell space, aftermarket suspension components, or larger brake systems. Checking actual measurements helps buyers avoid installation issues and ensures the tire delivers the intended appearance and performance.
Performance & Use Case â–¼
The Firestone Wide Oval Radial RWL GR70-15 is designed to provide classic muscle car styling with the smoother ride and handling characteristics of radial construction. Compared with traditional bias ply tires, radial construction generally offers improved stability, reduced road feel, and better long-distance comfort for collector vehicles.
The tire carries an S speed rating, indicating capability up to 112 mph under proper conditions. While many classic cars are not driven at sustained high speeds, this rating supports normal highway cruising when the tire is correctly installed, inflated, and used within its intended application.
The Firestone Wide Oval Radial RWL GR70-15 is designed specifically to bridge the gap between authentic styling and modern performance expectations. It uses correct-looking sidewall markings, raised white letters, and a classic tread appearance while incorporating radial construction.
This makes it appealing for restoration enthusiasts who want their muscle car to look period-correct but still drive comfortably on today's roads. The tire maintains the visual character of original Wide Oval tires while offering advantages such as improved ride quality and longer tread life compared with many traditional bias ply alternatives.
The Firestone Wide Oval Radial RWL GR70-15 provides handling characteristics associated with radial construction while preserving the visual profile of a bias ply tire. Compared with traditional bias ply tires, radial construction generally improves stability, ride comfort, and tread longevity.
The difference can be noticeable in steering feel and road response because radial tires interact with the road differently. Owners converting from original bias ply tires should ensure proper alignment and inflation settings. The GR70-15 is designed for enthusiasts who want classic appearance with a more modern driving experience.
Construction, Durability & Load Capacity â–¼
The Firestone Wide Oval Radial RWL GR70-15 uses bias look radial construction, combining the visual profile and styling of a vintage bias ply tire with the performance characteristics of a modern radial tire. This design allows classic vehicle owners to maintain the original appearance while gaining improved ride quality and tread life.
The radial construction changes how the tire flexes and contacts the road compared with traditional bias ply designs. This can provide a smoother driving experience and more predictable handling during regular use. For collectors, the GR70-15 offers a way to preserve authenticity without relying on older tire technology.
The Firestone Wide Oval Radial RWL GR70-15 is built using modern materials and radial construction, which can improve durability and tread performance compared with many traditional bias ply tires. Radial designs typically distribute forces differently across the tire, helping reduce certain types of wear during driving.
For classic vehicles that are driven more frequently, the GR70-15 provides a practical balance between historical appearance and modern tire construction. Proper inflation, correct alignment, and suitable storage conditions remain important for maximizing tire life. The tire is designed to support enthusiasts who want reliability without losing the classic Wide Oval look.
The Firestone Wide Oval Radial RWL GR70-15 has a listed maximum load capacity of 1,620 pounds at 32 psi. This specification indicates how much weight each tire is designed to support under the stated conditions and helps determine whether the tire is appropriate for a specific vehicle.
Classic cars vary significantly in weight depending on body style, engine option, and modifications. Buyers should consider the total vehicle weight distribution rather than only tire size. Ensuring the tire's load capacity matches the vehicle's requirements supports safe operation and helps maintain proper tire performance.
Installation & Maintenance â–¼
The Firestone Wide Oval Radial RWL GR70-15 is listed as a tubeless tire, meaning it is designed to be mounted and operated without an inner tube when used with compatible wheels. Tubeless construction is common on many classic vehicles that have suitable wheels designed for this application.
Before installation, owners should confirm that their wheels are appropriate for tubeless tire use and are in good condition. Wheel damage, corrosion, or improper sealing surfaces can affect air retention. Proper mounting ensures the Firestone Wide Oval Radial RWL GR70-15 maintains the intended performance, appearance, and reliability.
Proper storage helps protect the Firestone Wide Oval Radial RWL GR70-15 from unnecessary aging and environmental exposure. Classic vehicles often sit for long periods, so keeping tires away from excessive sunlight, heat sources, moisture, and chemicals helps preserve their condition.
Owners should inspect the tires after extended storage before driving. Checking inflation pressure, sidewall condition, and tread appearance helps identify issues that may have developed while parked. Supporting the vehicle properly during long storage periods can also help reduce unnecessary stress on the tires and suspension components.




