1966 Ford Tire Fitment Guide

1966 Ford vehicles use 12 sizes across seven model groups: 155R13 and 560-13 for Cortina; 695-14, 735-14, and 775-14 for Fairlane; 650-13, 695-14, 735-14, and 775-14 for Falcon; 7.35-15, 775-15, 8.25-15, and 815-15 for full-size Ford models; 8.45-15 and 855-15 for Ford Wagons; 695-14 for Mustang; and 8.25-15 or 815-15 for Thunderbird. Rim diameters span 13, 14, and 15 inches, so there is no single size family for the entire make.

That spread means a buyer should identify the exact 1966 Ford model before looking at brand or sidewall style. Where rim width guidance exists, it also varies by size: 155R13 uses 4.00 to 5.50 inches, 560-13 uses 3.50 to 4.50 inches depending on tire, 650-13 uses 4.50 to 5.00 inches, 695-14 uses 5.00 to 6.00 inches, 735-14 uses 5.00 to 5.50 inches, 775-14 uses 5.00 to 6.00 inches, 775-15 uses 4.50 to 6.00 inches, 815-15 uses 5.00 to 6.50 inches, and 855-15 uses 6.00 to 6.50 inches. Confirm the wheel before making a final choice.

On a 1966 Ford, 155R13 is a euro-metric radial size used on the Cortina. The 155 identifies the nominal section width in millimeters, the R indicates radial construction, and the 13 is the wheel diameter in inches. The available versions are blackwall tires from Michelin and Dunlop, and H-rated examples carry a 130 mph speed ceiling.

That code reads very differently from the numeric bias-ply sizes used on most other 1966 Ford models, which is why Cortina owners should not assume interchangeability with domestic Ford fitments. A 155R13 points you toward a more European, radial-style driving experience and a 13-inch wheel, so the first check is that the car is in fact a Cortina and that the wheel width falls within the acceptable range for the specific tire you are considering.

No, 1966 Ford models do not use the same tire size. Mustang centers on 695-14, Cortina uses either 155R13 or 560-13, Falcon spans both 13- and 14-inch sizes, Fairlane uses three 14-inch sizes, Thunderbird uses 8.25-15 or 815-15, full-size Ford models use four different 15-inch sizes, and Ford Wagons move into 8.45-15 or 855-15. Even when two models share a size, that does not make the whole make interchangeable.

The practical takeaway is simple: year and make narrow the search, but model finishes it. That matters most with 1966 Ford because the same showroom year included a compact British-sourced car, compact and midsize domestic cars, a sporty pony car, a personal luxury car, and large family wagons. Start with the model name on the car, then confirm wheel diameter, and only after that compare sidewall style, brand, and construction.

For a 1966 Ford Cortina, the choice between 155R13 and 560-13 is primarily a choice between radial and bias-ply construction. The 155R13 is a radial 13-inch size in blackwall form from Michelin and Dunlop, while 560-13 is a bias-ply 13-inch size from BFGoodrich and Firestone with narrow or wide whitewall styling. They are both Cortina sizes, but they represent different eras and different driving character.

A buyer pursuing a more authentic 1960s presentation will usually lean toward the bias-ply 560-13, especially when whitewall appearance matters. A buyer who expects more modern-feeling road behavior in a Cortina will often prefer the radial 155R13. Before deciding, confirm the wheel width, look at the sidewall style you want the car to wear, and make sure the tire choice matches how the car will actually be used rather than how it looks in isolation.

1966 Ford tires cover a broad sidewall range depending on size. Blackwall appears in 155R13, 695-14, and 735-14; narrow whitewall appears across many 13-, 14-, and 15-inch bias-ply sizes; wide whitewall is offered in 560-13 and 650-13; redline appears in 775-14 and 775-15; dual-redline appears in 695-14; goldline appears in 775-15; and whitewall-redline appears in 815-15. Sidewall choice is therefore tied to both the model's size and the look you want.

For a 1966 Ford judged on authenticity, sidewall style matters almost as much as the size itself, because it strongly influences the car's period impression. Full-size and wagon models often wear whitewall treatments comfortably, while sporty applications such as Mustang-related or performance-minded 14- and 15-inch fitments can make visual sense in blackwall or redline form. Match the sidewall to the character of the specific model and, for show use, compare your choice against factory literature or marque-club guidance.

1966 Ford tire coverage includes Michelin, Dunlop, BFGoodrich, Firestone, US Royal, and Coker Classic. Cortina's 155R13 comes from Michelin and Dunlop, while 560-13 comes from BFGoodrich and Firestone. Among the 14-inch bias-ply sizes, 695-14 is available from BFGoodrich and US Royal, 735-14 from BFGoodrich, 775-14 from BFGoodrich, Firestone, and US Royal, and 650-13 from Coker Classic and US Royal. In the 15-inch range, 775-15 comes from BFGoodrich and Firestone, while 815-15 and 855-15 are available from BFGoodrich.

That mix gives 1966 Ford owners room to choose not just a size, but a brand family and appearance that suits the car. Some buyers prioritize a well-known historical American brand name on a domestic Ford, while others are more interested in a specific sidewall treatment or a radial-versus-bias construction choice. It is wise to narrow the search in this order: correct model, correct size, preferred construction, then the brand and sidewall style that best fit the car's intended presentation.

Rim width requirements for 1966 Ford tires depend entirely on the size. 155R13 fits 4.00 to 5.50-inch rims, 560-13 fits 3.50 to 4.50-inch rims depending on product, 650-13 fits 4.50 to 5.00 inches, 695-14 fits 5.00 to 6.00 inches, 735-14 fits 5.00 to 5.50 inches, 775-14 fits 5.00 to 6.00 inches, 775-15 fits 4.50 to 6.00 inches, 815-15 fits 5.00 to 6.50 inches, and 855-15 fits 6.00 to 6.50 inches. Those ranges should be matched to the actual wheel on the car.

A wheel can share the correct diameter with a tire and still fall outside the ideal width range, which affects section shape and overall presentation. This is especially important on 1966 Ford because several model lines have multiple sizes within the same rim diameter, particularly among the 14- and 15-inch applications. Measure the wheel at the bead seat if there is any doubt, then compare that figure to the specific size you intend to run rather than assuming all same-diameter tires fit equally well.

Inner-tube requirements on 1966 Ford tires depend on the exact product. The 155R13 radial range includes variation, because one available tire is marked TL for tubeless while another does not carry that same marking in the size description. Many of the bias-ply sizes do not carry an explicit tube-type or tubeless callout in the available information, so the safest approach is to check the sidewall marking on the exact tire and compare it with the wheel design you plan to use.

Wheel condition and wheel construction matter just as much as the tire marking, especially on older 1966 Ford wheels that may have seen decades of use or refinishing. If the wheel was originally designed around tube-type service, or if bead-seat condition is questionable, tube decisions should be made carefully and consistently across the set. A marque specialist or wheel restoration shop can be helpful when the car still wears original steel wheels and you want to preserve authenticity without creating avoidable sealing issues.

Original 1966 Ford wheels cannot be treated as universal across the full make, because the model range uses 13-, 14-, and 15-inch tire sizes. A Cortina wheel sized for 155R13 or 560-13 is fundamentally different from a Mustang wheel for 695-14 or a Thunderbird wheel for 8.25-15 or 815-15. Diameter compatibility has to come first, and even among tires sharing a diameter, the wheel width still needs to suit the chosen size.

Within a single model family, an original wheel may work with more than one accepted size if the rim diameter and width fall inside the tire's approved range. That is most relevant on Fairlane, Falcon, and some full-size Ford applications where several neighboring sizes exist. Check the wheel's actual dimensions before assuming an original wheel can carry a different size simply because it looks visually similar or came from another 1966 Ford model.

A stored 1966 Ford should be kept out of direct sunlight, away from electric motors or other ozone sources, and on a dry surface with stable temperatures if possible. Tires should be set to the proper cold inflation pressure and the car should be moved periodically so the same contact patch is not carrying weight for months at a time. Bias-ply tires are more prone to taking a temporary flat spot during long static storage than radials, so regular repositioning matters.

Collectors who store a 1966 Ford for an entire season often use tire cradles or place the vehicle on stands to reduce continuous load, but the suspension and storage plan should be considered as a whole rather than as a tire-only issue. A clean, dark garage and occasional rolling movement do more good than cosmetic tire dressing. If the car is stored with older reproduction tires, inspect for sidewall cracking before the first drive of the season rather than assuming the tires aged well just because mileage stayed low.

Tires on a 1966 Ford usually age out before they wear out. For collector vehicles, a practical rule is to begin careful evaluation around five to seven years of service and to consider replacement as tires approach ten years from the date code, even if tread depth still looks good. Age, storage conditions, heat, and ozone exposure matter more than mileage on cars that are driven only occasionally.

That timeline is especially relevant for 1966 Ford owners because many of these cars spend long periods parked between local cruises, shows, or seasonal outings. A bias-ply tire with sharp-looking tread can still be well past its safest useful age if the rubber has hardened or begun to crack. Read the DOT date code on the sidewall of each tire, compare the age across the full set including the spare, and replace by age condition rather than waiting for visible tread wear.

Tires on a 1966 Ford should be inspected before every drive and again before any longer road trip. Look closely for sidewall cracking, bulges, cuts, irregular wear, low pressure, and signs that the tire is no longer holding air consistently. If the car uses a product or wheel setup that involves tubes, include the valve stem area in that inspection because slow leaks often show up there first.

A quick walk-around is not enough on an older collector car that may sit for weeks between uses. Put a gauge on all four tires, check the spare, and look at the inner sidewalls if access allows, because age-related damage is not always obvious from the outside shoulder alone. On a 1966 Ford, tire inspection should be part of the same routine as checking fluids, belts, and brakes before heading onto faster roads or taking the car farther from home.

For a 1966 Ford Mustang, the fitment here centers on 695-14, and the period-correct construction for the era was bias-ply rather than radial. Available 695-14 choices include blackwall, narrow whitewall, and dual-redline versions from traditional collector-tire brands, which reflects the range of visual presentations buyers often seek when restoring a mid-1960s pony car. No original equipment brand should be assumed without checking factory literature for the exact market and equipment level.

That means a restoration decision should focus first on the correct size and construction, then on the sidewall appearance that best matches the car's build date, market, and intended judging standard. A local show may be forgiving about appearance details, while a marque-specific concours may be much stricter about whether a 1966 Ford Mustang should wear blackwalls, whitewalls, or a period performance stripe treatment. Factory brochures, period photos, and Mustang clubs remain the best sources for event-specific confirmation.

Correct tire fitment matters quite a bit when showing a 1966 Ford, especially in restoration-oriented classes. Judges and knowledgeable enthusiasts often notice whether the car has the right overall size family, the correct construction for the era, and an appropriate sidewall style for the model's character. A radial on a car expected to wear bias-ply rubber, or a sporty redline on a model better known for whitewalls, can change the whole presentation even if the tire physically fits.

The stricter the event, the more important those distinctions become across the broad 1966 Ford lineup. A Cortina, Mustang, Thunderbird, and full-size wagon each project a different visual identity, so tire choice should support that identity rather than flatten it into one generic collector-car look. Before a judged event, compare your tire size, construction, and sidewall style against period photos and the standards used by the club or organization hosting the show.

For the 1966 Ford applications that use 695-14, BFGoodrich and US Royal both offer classic bias-ply options with the same 1,230-pound load capacity at 32 psi in available examples. BFGoodrich covers blackwall, narrow whitewall, and dual-redline treatments, while US Royal appears here in narrow whitewall form. Weight also varies slightly, with BFGoodrich examples running 19 to 20 pounds and the US Royal narrow whitewall at 21 pounds.

The practical difference is less about fitment and more about appearance and brand preference, since both are built around the same basic size category for the same 14-inch Ford applications. A buyer restoring a 1966 Ford Mustang, Falcon, or Fairlane can use that comparison to decide whether the car should wear a plainer blackwall, a more traditional narrow whitewall, or a sportier period stripe treatment. Once the desired look is set, compare the wheel width and overall restoration goal before finalizing the choice.

1966 Ford tires can be used for highway driving when they are the correct size, in sound condition, and operated within their construction and speed limits. The radial 155R13 options for Cortina include H-rated examples with a 130 mph ceiling. Most of the remaining sizes represented here are bias-ply tires, and while they may not always carry a speed letter in the same way, their road behavior should be understood as traditional bias-ply behavior rather than modern high-speed touring behavior.

In real-world use, the age and condition of the car often matter more than outright tire speed capability on a 1966 Ford. Steering, suspension, brakes, alignment, and the condition of old wheels all influence confidence at highway pace, especially on larger full-size cars and wagons. A fresh set of correctly fitted collector tires is only one part of the equation, so the car should be mechanically sorted before expecting relaxed long-distance interstate use.

Inflation pressure on 1966 Ford tires should not be guessed from one size and applied to another. Several available tires include maximum load and pressure figures such as 850 pounds at 30 psi for 560-13, 1,150 pounds at 32 psi for 650-13, 1,230 pounds at 32 psi for 695-14, 1,360 pounds at 32 psi for 735-14, 1,580 pounds at 32 psi for 775-14, 1,490 pounds at 32 psi for 775-15, 1,610 pounds at 32 psi for 815-15, and 1,710 pounds at 32 psi for 855-15. Those figures are load-capacity references, not automatic vehicle settings.

For day-to-day use, start with the original owner's manual or factory tire-pressure recommendation for the exact 1966 Ford model, then compare that guidance with the reproduction tire maker's limits for the exact size you selected. Pressure affects ride, wear pattern, and steering feel, and the right number for a compact Cortina will not be the right number for a Thunderbird or a full-size wagon. Use a dependable gauge and check pressures cold, not after the car has been driven.

Before a longer drive in a 1966 Ford, inspect each tire for cracks, cuts, bulges, exposed cords, uneven wear, and pressure loss, then check the spare as carefully as the four road tires. Make sure the valve stems are sound, and pay extra attention to them if the wheel-and-tire setup involves tubes or older hardware. Tread depth matters, but age condition and air retention are usually the bigger concerns on collector tires.

A longer outing also calls for a broader mechanical check because a 1966 Ford asks more of its systems than a short local cruise does. Brakes, belts, coolant, charging, wheel bearings, and suspension should be looked over alongside the tires, especially if the car has been sitting. When the tires are the correct size and in healthy condition, they support the drive; they should never be the part of the trip plan you are hoping turns out fine once you reach highway speed.