Coker Classic | 3 1/4 Inch Whitewall | G78-15
Coker Classic | 3 1/4 Inch Whitewall | G78-15 Coker Classic | 3 1/4 Inch Whitewall | G78-15 Coker Classic | 3 1/4 Inch Whitewall | G78-15
Tire Series Coker Alphanumeric
Brand Coker Classic
SKU 62803
Product Size G78-15
Tire Construction Bias Ply
Sidewall Style Wide Whitewall
Sidewall Style Width (in) 3.250
Bias Ply Width G78
Rim Diameter (in/mm) 15 inch
Overall Diameter (in) 27.68
Section Width (in) 8.05
Tread Width (in) 5.63
Rim Width (in) 5.00 - 7.00
Max Load Capacity 1620@32 psi
Tread Depth (32nds) 12
Construction Ply 4 PLY POLY
Tube Type or Tubeless Tubeless

Coker Classic 3.25 Inch Whitewall | G78-15



Coker Classic | 3.25 Inch Whitewall | G78-15

Coker Classic whitewall tires have been a top choice for hot rods, classics and customs for decades. This Coker G78-15 bias ply tire is a perfect choice for a custom, or a classic Caprice, Cadillac or other full size sedan that needs a fat tire with a 3.25 inch wide whitewall. Coker wide white wall tires feature genuine whitewall construction and authentic deluxe tread designs. These Coker Classic bias ply wide whitewalls are made in the USA. DOT and ECE (European Union) approved, and backed by our life of the tread warranty. Tread patterns and sidewall styles vary, please click on individual tires below to view photos.

G78-15 Tire Conversion Chart

Radial Equivalent First Choice: 215/75R15

Radial Equivalent Optional Choice: 710R15

Genuine Wide Whitewall Tire

This product features a genuine wide whitewall sidewall style. This means that the bright white rubber is added directly to the tire sidewall during initial construction of the carcass, resulting in a truly integrated, high-quality product after vulcanization. Wide whitewall tires were a very popular choice from the 1930's through the end of the 1950's, and were eventually phased out of mainstream production by 1962. Originally, wide whitewall tires featured a bias ply construction, but now Coker Tire offers them in original style bias ply and modern radial construction.

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 Brand Collector Vehicle Tires

Coker Tire was founded in 1958 and many years of our history has been focused on supplying the collector vehicle market with authentic tires. Coker Classic is our house brand, which is a favorite among car restorers and enthusiasts around the world. We were the first to develop the wide whitewall radial, and it's still one of our 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. 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.

Product Questions & Answers

(77) People thought this was helpful
Does this tire require a tube? The listing on JEGS says it does, but it says "Tubeless" here.
By Visitor on February 01, 2020

This is a tubeless tire and does not require a tube.

Coker Tire Support on February 03, 2020
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(77) People thought this was helpful
Have a 55 t-bird with G-78 bias tires would like a same size wide white wall radial tires ,cant be wider as i have fender skirts
By Richard Blankenbaker on December 18, 2019

We'll recommend this 670R15 American Classic bias - look radial. See here:

Coker Tire Support on December 18, 2019
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(77) People thought this was helpful
Is this tire a radial?
By Joseph on July 09, 2018

No, this is a bias ply tire.

Coker Tire Support on July 10, 2018
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