The 1964 Fiat 1100 sits squarely in the compact European sedan tradition, offering simple packaging, modest proportions, and the kind of road manners that make small-displacement classics appealing today. For owners, the tire decision is especially important because this Fiat uses both period-style bias-ply and later-style radial fitments depending on the exact body configuration. The D Sedan uses 155R14 radial or 520-14 bias-ply sizing, while the D Wagon moves to 165R14 radial or 560-14 bias-ply. That creates meaningful choice in construction, appearance, and sidewall treatment. Getting the right tire starts with confirming whether the car is a Sedan or Wagon, then deciding whether originality of look or modern radial driving character matters more.
Which Tire Size Is Right for The 1964 Fiat 1100
Four primary tire sizes apply to the 1964 Fiat 1100, and the correct one depends first on whether the car is a D Sedan or a D Wagon. All four sizes use a 14-inch rim, but fitment varies by both sub-model and construction, with radial and bias-ply options tied to different size conventions. Before choosing a tire, identify the exact body style and decide whether a period-style bias-ply presentation or a radial setup better suits the car.
155R14 is a Euro-metric radial size in which 155 identifies the nominal section width in millimeters, R indicates radial construction, and 14 identifies the wheel diameter in inches. On the 1964 Fiat 1100, this radial size applies to the D Sedan and brings a more modern sizing convention than the period numeric bias-ply alternative. Available choices include Michelin and Firestone blackwall tires in radial series such as Michelin X Radial and F560 Radial. It is the right place to start for a Sedan owner who wants a radial tire while keeping the car on a 14-inch wheel.
520-14 is a numeric bias-ply size, where 520 represents an approximate 5.20-inch nominal section width and 14 identifies the rim diameter. For the 1964 Fiat 1100, this bias-ply size belongs to the D Sedan and suits buyers who want a more traditional construction and a distinctly vintage presentation. The available selections center on Premium Sport Lowrider tires with narrow whitewall treatments in different visual formats. It is the size to evaluate when preserving a period-style look matters more than moving the Sedan to radial construction.
165R14 is a Euro-metric radial size using a 165-millimeter nominal section width, radial construction, and a 14-inch wheel diameter. On the 1964 Fiat 1100, this size is associated with the D Wagon rather than the Sedan, so it should be selected only after confirming the wagon body style. Product choices include blackwall radials from Pirelli, Michelin, and Vredestein in series such as Cinturato CA67, Michelin XAS, and Sprint Classic. It makes sense for Wagon owners who want a radial tire in the correct 14-inch fitment range for that configuration.
560-14 is a numeric bias-ply size in which 560 represents an approximate 5.60-inch nominal section width and 14 identifies the wheel diameter. This is the bias-ply fitment for the 1964 Fiat 1100 D Wagon, giving the wagon a different period size than the D Sedan. BFGoodrich offers this size in the Silvertown Classic Bias Ply series with blackwall, narrow whitewall, and wide whitewall sidewall styles. It is the size to consider when the Wagon is being kept in a more traditional visual and construction theme on a 14-inch rim.
Sub-model fitment matters on the 1964 Fiat 1100 because the D Sedan and D Wagon do not share the same tire sizes. Both use 14-inch wheels, but each body style has its own radial and bias-ply pairing, so identifying the exact sub-model is the first step before comparing tire options.
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1964 Fiat 1100 D Sedan
The 1964 Fiat 1100 D Sedan uses either 155R14 in radial construction or 520-14 in bias-ply form. That gives Sedan owners a clear choice between a more modern radial format and a more traditional numeric bias-ply size, depending on driving goals and appearance preferences.
The 1964 Fiat 1100 D Wagon uses either 165R14 as its radial size or 560-14 as its bias-ply size. Wagon owners should stay focused on those larger sub-model-specific sizes and then compare blackwall or whitewall bias-ply options against the available blackwall radial selections.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Best 1964 Fiat 1100 Tires for Sale
Available 1964 Fiat 1100 tires span radial and bias-ply construction across Michelin, Firestone, Pirelli, Vredestein, Premium Sport, and BFGoodrich. Depending on size, the comparison points include blackwall, narrow whitewall, or wide whitewall styling, along with distinct vintage and European radial tire series.
Common questions for the 1964 Fiat 1100 usually center on the correct size for the D Sedan or D Wagon, radial versus bias-ply fitment, sidewall appearance, and the wheel and condition checks worth making before road use.
Tire Size & Fitment
What tire size fits a 1964 Fiat 1100?
The 1964 Fiat 1100 does not use one universal tire size across all versions. The D Sedan uses 155R14 in radial form or 520-14 in bias-ply form, while the D Wagon uses 165R14 in radial form or 560-14 in bias-ply form. All of those sizes are built for 14-inch wheels.
The practical decision starts with identifying whether the car is a Sedan or Wagon, because the two body styles do not share the same size pairing. After that, the next choice is construction: radial for a later-style metric format or bias-ply for a more traditional period-style fitment and sidewall presentation.
What size rim does a 1964 Fiat 1100 use?
The tire sizes used on the 1964 Fiat 1100 are all built around a 14-inch rim diameter. That applies to both Sedan and Wagon fitments, whether the car is using a radial size such as 155R14 or 165R14, or a numeric bias-ply size such as 520-14 or 560-14.
Rim diameter is only the first check, not the whole fitment picture. Wheel width still matters, especially when comparing among available products, and the actual wheel on the car should be confirmed if the Fiat has been changed from stock-style wheels at some point in its life.
Why does the 1964 Fiat 1100 have more than one tire size?
More than one tire size applies because the 1964 Fiat 1100 has sub-model-specific fitment. The D Sedan uses one radial and one bias-ply size, and the D Wagon uses a different radial and bias-ply pairing. The sizes are tied to both body style and tire construction, not simply to personal preference.
That means the correct starting point is not just the year and model name, but the exact sub-model and the wheel setup currently on the car. Once those are confirmed, the remaining choice is whether the goal is a traditional bias-ply look or a radial setup within the proper size range.
Choosing the Right Tire
What should I consider when choosing a 1964 Fiat 1100 tire?
Start by matching the tire to the exact sub-model. A 1964 Fiat 1100 D Sedan uses 155R14 radial or 520-14 bias-ply sizing, while the D Wagon uses 165R14 radial or 560-14 bias-ply sizing. Construction type, sidewall style, and wheel compatibility should all be considered after the correct sub-model size is confirmed.
From there, the choice becomes more specific. A radial may suit owners focused on later-style driving manners, while a bias-ply tire may better support a traditional presentation. It also helps to compare the available brands, rim-width ranges where stated, load figures where stated, and whether blackwall or whitewall styling fits the car's intended look.
What sidewall styles are available for 1964 Fiat 1100 tires?
Sidewall style depends on the tire size chosen for the 1964 Fiat 1100. The radial sizes in 155R14 and 165R14 are offered in blackwall form, while the bias-ply sizes introduce more visual variety. The 520-14 options use narrow whitewall styling, and 560-14 is available in blackwall, narrow whitewall, and wide whitewall form.
That makes sidewall treatment an important part of the decision, especially on a restoration-oriented or presentation-focused car. The right choice depends on the exact sub-model, the construction being used, and the look the owner wants to achieve, rather than assuming one whitewall width suits every 1964 Fiat 1100.
What brands offer tires for the 1964 Fiat 1100?
Several brands cover the 1964 Fiat 1100 across its different tire sizes. Radial options come from Michelin, Firestone, Pirelli, and Vredestein, while bias-ply choices appear under Premium Sport and BFGoodrich. The available brand depends on whether the car is a Sedan or Wagon and whether the selected size is radial or bias-ply.
Brand should be compared alongside the actual product format rather than by name alone. Some choices are blackwall radials in European-style series, while others are whitewall or blackwall bias-ply tires with a much different visual character. Matching the brand to the correct size and intended use is more important than chasing a name by itself.
Restoration & Appearance
Which tire should I choose for a period-style 1964 Fiat 1100?
A period-style 1964 Fiat 1100 usually starts with the correct bias-ply size for the exact body style. That means 520-14 for the D Sedan or 560-14 for the D Wagon. Those sizes keep the car in a traditional numeric bias-ply format and open the door to whitewall or blackwall presentations depending on the selected product.
For many restorations, the visual effect matters as much as the size itself. Sidewall width, overall stance, and the distinction between bias-ply and radial construction all influence how the finished car looks. When exact originality is important, vehicle-specific historical references and marque knowledge are still worth checking before finalizing the tire choice.
How does tire construction affect the appearance of a restored 1964 Fiat 1100?
Construction changes the visual character of a restored 1964 Fiat 1100 more than many owners expect. A numeric bias-ply size such as 520-14 or 560-14 gives the car a more traditional vintage presentation, while radial sizes such as 155R14 and 165R14 introduce a later-style metric format and a different visual impression.
That does not automatically make one choice right and the other wrong. A restoration focused on period-style appearance may lean toward bias-ply, while a car restored for regular road use may lead the owner toward radial construction. The key is choosing a tire that matches both the correct sub-model fitment and the car's intended finished character.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1964 Fiat 1100?
Yes, modifications can change tire fitment on a 1964 Fiat 1100 even when the tire size itself is correct for the model. Aftermarket wheels, altered wheel widths, suspension changes, ride-height changes, or body repairs can all affect how a 14-inch tire sits in the wheel opening and how much steering or fender clearance remains.
That is especially important when the car has changed hands over the years and its wheel setup is no longer certain. A careful check of actual wheel diameter and width, plus clearance at full steering lock and through suspension movement, is worthwhile before committing to a new set of Sedan or Wagon tires.
What should I inspect before driving a 1964 Fiat 1100 on new tires?
Before driving a 1964 Fiat 1100 on new tires, inspect the wheels, valve stems, and the general condition of the suspension and steering components. Confirm that the mounted tire matches the correct Sedan or Wagon size, and check that there is no interference at the fender edge, inner wheelhouse, or steering components.
A collector car also benefits from a broader pre-drive inspection. Set tire pressure to the product's intended operating condition, recheck lug hardware after installation, and look over the rest of the car for fluid leaks, brake condition, and signs of long-term storage. Tires perform best when the rest of the chassis is ready for the road as well.
How should tires on a collector 1964 Fiat 1100 be maintained?
Tires on a collector 1964 Fiat 1100 should be inspected regularly for air loss, cracking, cuts, bulges, and uneven wear, even if the car is driven only occasionally. Low-mileage classics often age their tires through time and storage conditions rather than tread use, so appearance and condition matter as much as remaining tread depth.
Storage habits make a difference. Keeping the car away from prolonged sunlight, ozone sources, excess moisture, and extreme heat helps preserve tire condition over time. It is also wise to check pressures before each outing and give the tires a close visual inspection before longer drives, especially after the Fiat has been sitting.
