1966 Plymouth Barracuda Tires

The 1966 Plymouth Barracuda uses three primary tire sizes: 650-13, 700-13, and 695-14. All three are bias-ply fitments, but they do not apply to every Barracuda the same way. The 6 Cyl. version can use 650-13 or 700-13, the 8 Cyl. uses 700-13, and Formula S plus Barracuda models with disc brakes use 695-14.

That means the right answer starts with the exact sub-model and wheel diameter on the car. A Barracuda that has been changed over the years may no longer wear its original wheel setup, so confirming whether it has 13-inch or 14-inch wheels is just as important as knowing the trim or brake configuration.

A 1966 Plymouth Barracuda can use either a 13-inch or 14-inch rim, depending on the vehicle configuration. The 650-13 and 700-13 tire sizes are for 13-inch rims, while the 695-14 tire size is for a 14-inch rim. Rim diameter is one of the key reasons Barracuda tire fitment needs to be confirmed before selecting a replacement tire.

Wheel diameter should be checked directly on the car, especially if it has seen restoration work or wheel changes over the years. Once the diameter is confirmed, the next step is making sure the tire size matches the Barracuda sub-model and that the wheel width falls within the tire’s usable range.

The 1966 Plymouth Barracuda has more than one tire size because fitment changes across sub-models and equipment groups. Six-cylinder cars can use 650-13 or 700-13, eight-cylinder cars use 700-13, and Formula S plus Barracuda models with disc brakes use 695-14. Those differences also split the car between 13-inch and 14-inch wheel applications.

For a buyer, that means the tire decision is not just about year, make, and model. It is also about confirming how the individual car is equipped today. Engine configuration, disc-brake setup, and any later wheel changes all matter before comparing sidewall styles, brands, or radial-equivalent alternatives.

For the 1966 Plymouth Barracuda, 695-14 is a primary bias-ply tire size. It is used on Formula S and on Barracuda models with disc brakes, and the available products in that size are bias-ply constructions. That makes 695-14 part of the original vintage sizing and construction style used on those 14-inch-wheel Barracudas.

A radial alternative can still be considered, but it should be treated as an equivalent rather than the primary fitment. Buyers changing construction should verify wheel width, overall vehicle setup, and clearance around the suspension and body, especially on cars that have been restored, modified, or converted to different wheels.

Radial equivalents for 650-13 on a 1966 Plymouth Barracuda include 175R13 as an 80-series metric radial, P175/75R13 as a 75-series P-metric radial, P185/70R13 as a 70-series P-metric radial, and 650R13 as a bias-look radial. These give buyers several ways to stay near the original size while moving into a radial construction format.

Each of those options uses a different sizing convention, so the best choice depends on the wheel and the kind of appearance you want to preserve. A recommended rim-width range of 4-6 inches is associated with these equivalents, and the final check should include wheel compatibility plus fender and steering clearance.

Start by matching the Barracuda’s primary tire size to the correct radial equivalent and confirming the wheel diameter already on the car. For example, 650-13, 700-13, and 695-14 each have their own radial alternatives, and the 13-inch and 14-inch applications should not be mixed. Construction change alone is not the only issue; the actual size format also changes.

After that, inspect wheel width, steering clearance, suspension condition, and body clearance at full lock and full travel. A Barracuda with aftermarket wheels, changed ride height, or brake conversions deserves extra attention. The goal is to confirm that the radial equivalent suits the car’s present-day setup, not just its original tire designation.

Choosing a 695-14 tire starts with confirming that the car is a Formula S or a Barracuda equipped with disc brakes, since that is the 14-inch Barracuda fitment. From there, the main variables are brand, tire series, sidewall style, and wheel-width compatibility. Available choices include BFGoodrich, US Royal, and Goodyear products in several period-style presentations.

This size offers more visual variety than the 13-inch Barracuda fitments, so appearance plays a bigger role in the decision. A blackwall, narrow whitewall, dual redline, or raised white letter treatment can change the car’s look considerably, while rim-width suitability and intended road use remain just as important as style.

Sidewall options for 1966 Plymouth Barracuda tires vary by size. Across the available products, the Barracuda can be fitted with wide whitewall, narrow whitewall, blackwall, dual redline, RWL, and raised-white-letter Blue Streak styles. The broadest range appears in 695-14, while 650-13 and 700-13 are more focused on whitewall presentations.

The right sidewall style depends on the look you want from the car rather than on a one-style-fits-all rule. A restoration-oriented Barracuda may lean toward a whitewall or redline appearance, while a more performance-themed presentation may point toward blackwall or lettered sidewalls in the correct size.

Tires for the 1966 Plymouth Barracuda are available from Coker Classic, US Royal, Firestone, BFGoodrich, and Goodyear. Brand availability depends on the tire size, with 650-13 covered by Coker Classic and US Royal, 700-13 by Firestone, and 695-14 offering the widest range through BFGoodrich, US Royal, and Goodyear.

Brand choice should be considered alongside size, series, sidewall style, and wheel fitment rather than by name alone. A buyer looking at 695-14, for example, has more room to compare visual character across brands, while 650-13 and 700-13 choices are more tightly centered on maintaining the proper Barracuda fitment.

A period-style 1966 Plymouth Barracuda should begin with the correct primary size for the exact sub-model: 650-13, 700-13, or 695-14. Staying with the proper bias-ply format preserves the vintage sizing system and the traditional tire profile associated with the car’s mid-1960s character. After size is confirmed, the visual choice shifts to sidewall style and brand.

For a more restoration-oriented result, many buyers focus on whitewall, blackwall, or redline treatments that suit the way the car is being finished. Exact originality can vary by individual vehicle history, so buyers pursuing a highly accurate restoration should compare tire choices against marque references or vehicle-specific historical documentation.

On a restored 1966 Plymouth Barracuda, tire construction has a noticeable effect on stance and presentation. The primary fitments are bias-ply sizes, and that construction supports the traditional vintage look associated with 1960s compact performance and touring cars. Radial equivalents are available, but they belong to a different sizing format and visual character.

That does not mean a radial choice is wrong; it simply changes the look as well as the construction. Buyers trying to keep a stronger period-style appearance often stay with bias-ply or consider a bias-look radial where one exists, while buyers focused on broader road-use flexibility may weigh appearance against modern format alternatives.

Yes, modifications can affect tire fitment on a 1966 Plymouth Barracuda. Wheel changes, brake conversions, suspension work, altered ride height, or body modifications can all change which tire size works cleanly on the car. That matters even more here because the Barracuda already spans both 13-inch and 14-inch rim applications from the factory fitment range.

A Barracuda with aftermarket wheels should be checked for diameter, width, and clearance before using the original tire-size recommendation as the final answer. The practical goal is to confirm that the current setup still supports the intended tire without rubbing issues or wheel-to-tire mismatch.

Before driving a 1966 Plymouth Barracuda on new tires, inspect the wheels for the correct diameter and usable width, then confirm that the tires are properly mounted and inflated. It also helps to look over suspension and steering components so the new tires are not being asked to work with loose or worn hardware.

A short clearance check is worthwhile before regular road use, especially on a Barracuda that may have seen wheel or brake changes over time. Turn the steering from lock to lock, look for fender or suspension interference, and recheck air pressure after the first drives to catch any setup issues early.

Collector-car 695-14 tires on a 1966 Plymouth Barracuda should be maintained with regular pressure checks, visual inspections, and periodic movement of the car so the tires are not left in one loaded position for long stretches. Sidewall cracking, cuts, bulges, irregular tread wear, and slow air loss deserve attention even when the car is driven infrequently.

Storage conditions matter almost as much as mileage on a vintage Barracuda. Keeping the car away from prolonged sunlight, excess heat, moisture, and ozone sources helps protect the tires over time. Before any longer drive, inspect the tires again and make sure the wheel and suspension setup still matches the 695-14 fitment.