1966 DAF Tire Fitment Guide

1966 DAF vehicles in this guide use two tire sizes, both for the Daffodil: 145R13 and 520-13. Both mount on 13-inch wheels. Rim-width guidance appears on products within each size rather than as one universal rule, with 145R13 examples covering 4.00 to 5.00 inches and 520-13 examples covering 3.5 inches or 3.50 to 4.00 inches depending on the tire.

That means the first fitment question for a 1966 DAF is not model selection, since only the Daffodil is covered, but which tire format suits the car and its wheels. If your goal is a traditional mid-1960s appearance, 520-13 is the natural place to start. If you prefer a metric radial format on the same 13-inch wheel diameter, 145R13 is the other path. Wheel width should always be confirmed against the specific tire you choose.

On a 1966 DAF, 520-13 is a numeric bias-ply tire size. The 5.20 figure refers to the tire's nominal section width in inches, and the 13 identifies the wheel diameter in inches. It is an older sizing convention that was common before metric radials became widespread, and it pairs naturally with a bias-ply construction and a more vintage sidewall profile.

For a Daffodil owner, that matters because 520-13 is as much an appearance decision as a fitment one. This size is available in both blackwall and narrow whitewall styles, which can shift the car's visual character noticeably. If you are restoring the car with an eye toward period presentation, a numeric bias-ply size like 520-13 will usually align more closely with the era than a later-style metric radial marking.

On a 1966 DAF, 145R13 is a radial metric size. The 145 indicates a nominal section width of 145 millimeters, the R indicates radial construction, and the 13 is the wheel diameter in inches. Because no aspect ratio is printed in the base size code, it falls into the conventional early metric radial pattern commonly treated as an 80-series format.

That makes 145R13 the more modern-looking size code of the two choices for the Daffodil, even though it still fits a 13-inch wheel. It is a sensible route for owners who want a radial construction while keeping the car in an era-appropriate compact-car size. Product details still matter within the size, especially if you are comparing sidewall markings, speed rating information, and wheel-width compatibility.

Within this year-and-make guide, the 1966 DAF Daffodil uses two accepted tire sizes rather than one single mandatory size. Those sizes are 145R13 in radial construction and 520-13 in bias-ply construction, and both fit 13-inch wheels. The difference is not a split between separate DAF models here; it is a choice within the Daffodil itself.

For a buyer, that simplifies the search compared with a year-and-make page that spans several body lines. You do not need to sort among multiple 1966 DAF model families, but you do need to decide which tire type fits the way the car will be used and presented. Once that decision is made, the final confirmation is wheel width and the exact specification of the individual tire rather than year or model confusion.

For a 1966 DAF, the choice between 520-13 and 145R13 is mainly a choice between bias-ply and radial construction. The 520-13 keeps the car in a traditional numeric bias-ply format that looks at home on a mid-1960s compact. The 145R13 uses a radial metric format and includes options such as the Michelin XAS FF and Firestone F560 radial.

Owners restoring a Daffodil for period presentation often lean toward 520-13 because the construction type and size format suit the era. Owners who expect more regular road use often consider 145R13 because it keeps the same 13-inch rim diameter while moving to a radial design. Neither decision should be made by size code alone, though; check the wheel width and the exact tire's markings so the choice fits both the car and your intended use.

1966 DAF tires are available in more than one sidewall style. The 145R13 radial options are blackwall, while the 520-13 bias-ply range includes both blackwall and narrow whitewall versions. That gives the Daffodil owner a straightforward choice between a plain, understated look and a more decorative period presentation.

A blackwall usually suits a modest European compact very naturally, especially if you want the car to look restrained and factory-minded. A narrow whitewall can work if you are aiming for a more accessorized period appearance or a custom touch that still fits the era. Sidewall style will not change the wheel diameter requirement, but it can change the visual balance of the whole car, so it is worth deciding early in the process.

Three brands cover the 1966 DAF sizes here: Michelin, Firestone, and Premium Sport. In 145R13 radial form, Michelin and Firestone are available. In 520-13 bias-ply form, Firestone and Premium Sport are available, with Premium Sport focused on narrow whitewall variations and Firestone offering a blackwall bias-ply option.

That brand mix gives Daffodil owners a useful spread of personalities without changing the basic fitment question. Michelin brings a strong period-European association in the radial size, while Firestone appears in both the radial and bias-ply choices. Premium Sport broadens the cosmetic options within 520-13. Once you know whether you want radial or bias-ply construction, the next comparison becomes sidewall style, load information where present, and the wheel-width range for the exact tire.

Rim-width requirements for 1966 DAF tires depend on the size and the exact tire. A 145R13 radial example fits a 4.00 to 5.00 inch rim-width range. Within 520-13 bias-ply choices, one example is built for a 3.5-inch wheel and another covers 3.50 to 4.00 inches. Both sizes use a 13-inch wheel diameter, but width compatibility is not identical across every tire.

That is why wheel width matters as much as the size code on a Daffodil. A car that still wears its original narrow wheels may naturally favor some 520-13 options, while a wider 13-inch wheel may better suit certain 145R13 radials. Before mounting anything, measure the wheel or verify its specification so the tire's approved width range matches the hardware already on the car.

Inner-tube requirements on 1966 DAF tires depend on the specific tire rather than one blanket rule for the whole car. The Michelin 145R13 radial is marked TL, meaning tubeless. Other products in these sizes do not all carry the same explicit sidewall marking in the size description, so tube status can vary by product and should be confirmed on the exact tire you choose.

That matters most when an older wheel is involved, because the wheel design and condition can influence whether a tubeless tire is appropriate in practice. Tube decisions should never be made by habit alone. Match the tire's own markings with the wheel type, and if the car has original rims that have seen decades of use, inspect them carefully for condition and sealing surfaces before final installation.

Original 1966 DAF wheels can often be used with both 520-13 and 145R13 because both tire sizes fit a 13-inch rim diameter. That shared diameter is the main compatibility point. The limiting factor is wheel width, since some 520-13 tires are intended for narrower rims than a 145R13 radial example.

In practical terms, that means a Daffodil owner should confirm the wheel before assuming the two sizes are interchangeable on the same rim. Diameter alone is not enough. If the car still has its original wheels, measuring the wheel width is a smart first step before deciding between bias-ply and radial construction. That protects you from choosing a tire that fits the year and model but not the actual wheel on the car.

A 1966 DAF should be stored in a cool, dry, dark space away from direct sunlight, electric motors, battery chargers, welders, and other ozone sources that accelerate rubber aging. Keep the tires clean and properly inflated, and move the car periodically so one spot on the casing does not carry the load for months at a time. Bias-ply tires such as 520-13 are generally more prone to temporary flat-spotting during long static storage than radials.

If the Daffodil will sit for a season or longer, many owners either roll it occasionally or place it on stands to reduce sustained load. That is especially helpful for collector cars that see light annual mileage. Storage habits will not make an old tire new again, but they do slow cosmetic cracking, reduce flat-spotting, and help preserve both blackwall and whitewall sidewalls in better condition over time.

On a 1966 DAF, tire life should be judged more by age and condition than by mileage alone. Collector vehicles often wear out their tires chemically before they wear them out mechanically. A good rule is to evaluate tires closely once they reach about five to seven years of age and to treat the ten-year mark as a serious replacement point, regardless of remaining tread depth.

The best way to track that age is with the DOT date code on the tire, along with regular checks for sidewall cracking, hardening, distortion, and pressure loss. A Daffodil that only comes out for occasional drives can still age its tires quickly if it lives in heat or sunlight. If the car has old-looking tires with little tread wear, age is still the more important safety factor.

Tires on a 1966 DAF should be inspected before every drive and again before any longer outing. Look for visible sidewall cracking, cuts, bulges, irregular tread wear, embedded debris, and signs of pressure loss. If your chosen setup uses tube-type service, the valve stems and any tube-related hardware deserve the same close attention as the tread and casing.

Frequent inspections matter more on a lightly used vintage car than many owners expect, because long gaps between drives can hide slow air loss and age-related deterioration. A quick walk-around before leaving the garage can catch most problems early. For a longer trip, include the spare in the inspection routine so the backup tire is not older, flatter, or more degraded than the four on the ground.

For a 1966 DAF Daffodil, bias-ply construction is the most era-typical starting point when thinking about original fitment, and the 520-13 size aligns with that period style. The 145R13 radial reflects the radial format that became increasingly familiar in European small cars, but a buyer pursuing strict originality should treat bias-ply as the more historically conservative choice unless market-specific references point elsewhere.

Original-equipment details could still vary by destination market, production timing, and how a particular car was delivered or later updated. That is why a serious restoration should compare the car's surviving evidence with period literature and advice from DAF specialists or marque clubs. Getting the size, construction type, and sidewall appearance right will usually matter more to authenticity than chasing a brand name without solid proof.

Correct tire fitment absolutely matters when showing a 1966 DAF, especially in classes that reward factory-correct presentation. Judges and knowledgeable enthusiasts often notice whether the tire size, construction type, and sidewall style suit the era and the character of the car. A modern radial can be practical, but it may stand out on a Daffodil that is being presented as an authentic mid-1960s restoration.

That does not mean every event will judge the car the same way. Some local and touring-oriented shows are more relaxed, while stricter concours settings can be much more attentive to details like blackwall versus whitewall and bias-ply versus radial construction. If the car is being built with competition or judging in mind, review that event's standards and speak with marque specialists before finalizing the tire choice.

For a 1966 DAF in 520-13 size, Firestone and Premium Sport take different approaches within the same basic bias-ply fitment. Firestone offers a blackwall bias-ply with a stated load figure of 770 pounds at 32 psi and a 3.5-inch rim fitment. Premium Sport focuses on narrow whitewall styling, with one version carrying a stated load figure of 1100 pounds at 60 psi and a 3.50 to 4.00 inch rim-width range.

That means the decision is not only about brand name but also about appearance and wheel compatibility. A Firestone blackwall may suit a simpler, more understated restoration, while a Premium Sport narrow whitewall changes the visual personality of the car immediately. Since the approved wheel width and the stated load-and-pressure figures are not identical, compare the exact product rather than treating every 520-13 tire as interchangeable.

1966 DAF tires can be suitable for highway driving when they are the correct size, properly mounted, in sound condition, and used within their ratings. The clearest published speed rating here appears on the Michelin 145R13, which is marked H for a 130 mph ceiling. Other tires in these sizes do not all carry the same visible speed-letter information, so the exact product matters more than the size code alone.

In real-world use, the tire is only one part of the picture on a compact 1960s car. At ordinary U.S. highway speeds, the Daffodil's overall mechanical condition, braking, steering, and suspension are often just as important as the tire's maximum-rated capability. For longer road use, choose a tire that matches how the car will actually be driven and make sure the rest of the chassis is ready for sustained speed.

Inflation pressure on a 1966 DAF should follow the vehicle maker's recommendation for normal use, while also respecting the tire's own load-and-pressure limits. Among the tires here, 145R13 examples include a load figure of 825 pounds at 44 psi, 520-13 Firestone includes 770 pounds at 32 psi, and one 520-13 Premium Sport version includes 1100 pounds at 60 psi. Those figures are maximum load-at-pressure references, not universal running pressures for every Daffodil.

That distinction is important because collector cars are often overinflated by owners who mistake the sidewall maximum for the proper operating pressure. Start with the factory vehicle recommendation when available, then confirm that the chosen tire's capacity fits the car's needs at that pressure range. Never transfer a pressure figure from one size or brand to another simply because both mount on a 13-inch wheel.

Before taking a 1966 DAF on a longer drive, inspect each tire for cracks, cuts, bulges, uneven wear, and correct cold inflation pressure. Check the valve stems, and if your setup uses tube-type service, pay extra attention to stem condition and any signs of movement at the wheel. The spare should also be aired up and inspected, since an aging spare is common on lightly used vintage cars.

A longer trip is also a good reason to think beyond the tires themselves. Wheel hardware, brakes, steering play, shocks, and wheel bearings all influence how confidently the Daffodil will travel at sustained speed. Tires are the car's contact patch, but on a mid-1960s compact they work as part of a complete system. A careful pre-drive inspection lowers the chances of turning a pleasant vintage outing into a roadside repair.