The 1960 Fiat 600 belongs to the small-displacement European city-car era that made practical motoring accessible across postwar Europe, and its compact footprint still gives it a distinct personality today. Whether the car is a standard 600 or a Multipla, tire choice plays a visible role in both stance and driving character. This model appears with two 12-inch fitment paths: a 520-12 bias-ply tire and a 135R12 radial. That opens the door to traditional blackwall or wide whitewall bias-ply styling, or a metric radial presentation through Firestone’s F560 Radial. The right choice depends on whether the goal is period-style appearance, more modern road manners, or careful restoration-minded fitment.
Which Tire Size Is Right for The 1960 Fiat 600
The 1960 Fiat 600 uses two primary tire sizes, and the right one depends on the exact sub-model and the construction you want to run. Both sizes fit a 12-inch rim, but one is a vintage 520-12 bias-ply fitment and the other is a 135R12 radial, so the first step is confirming whether your car is a Base, Multipla, or Series and then deciding whether you want a traditional or radial setup.
135R12 is a Euro-metric radial size in which 135 identifies the nominal section width in millimeters, R designates radial construction, and 12 is the rim diameter in inches. On the 1960 Fiat 600, this size represents the radial fitment path and suits owners who want a more modern tire construction while staying with a compact, era-appropriate metric size. Available choices center on the Firestone F560 Radial in a blackwall presentation. This size is worth considering when maintaining radial construction matters to your driving plans, wheel setup, and overall look.
520-12 is a numeric bias-ply size, with the leading number expressing the tire’s nominal section width in inches and 12 identifying the rim diameter. For the 1960 Fiat 600, it is the traditional bias-ply fitment and carries the period-style proportions many restoration-oriented owners want to preserve. In this size, BFGoodrich options include both blackwall and 2.00 inch wide whitewall versions in the Silvertown Classic Bias Ply series. It is the size to evaluate when authentic vintage presentation matters as much as basic fitment on a 12-inch wheel.
Sub-model fitment matters on the 1960 Fiat 600 because not every version shares the same tire choices. Base and Multipla models can be equipped with either the radial or bias-ply size, while the Series is tied to the bias-ply fitment, so confirming the exact model comes before comparing tire options.
1
1960 Fiat 600 Base
The 1960 Fiat 600 Base can be fitted with either a 135R12 radial or a 520-12 bias-ply tire on a 12-inch rim. That gives the owner a meaningful construction choice between a more traditional bias-ply look and a compact radial setup that still stays within the car’s established size range.
The 1960 Fiat 600 Multipla shares the same two tire-size paths as the Base model, with both 135R12 radial and 520-12 bias-ply fitments in play. Tire selection here comes down to the kind of presentation and road use you want, while still confirming wheel condition and overall clearance on the vehicle as equipped.
The 1960 Fiat 600 Series uses the 520-12 bias-ply tire fitment rather than the broader two-size mix seen elsewhere in the range. That makes the decision more focused: choose the right bias-ply style and sidewall treatment, then confirm the wheel remains a proper 12-inch setup before installation.
Bias-Ply to Radial Tire Conversion for the 1960 Fiat 600
The 520-12 bias-ply size has two radial-equivalent options: 125R12 and P125/75R12. 125R12 is the 80-series metric radial equivalent, while P125/75R12 is the P-metric 75-series radial alternative. These choices give the original 520-12 fitment two different modern sizing formats rather than one universal substitute. A recommended rim-width range of 4 to 5 inches applies, and the final choice should still be checked against wheel width, overall vehicle setup, and clearance before changing construction.
Modern Radial Equivalents
125R12
Equivalent 80-series Metric Radial (520-12)
P125/75R12
Equivalent P-metric 75-series Radial (520-12)
Important Considerations When Replacing Bias Ply With Radial
Compare overall diameter and section width carefully to ensure proper fit.
Verify recommended rim range (4-5 in) and load needs match your vehicle specifications.
Check fender clearance, steering clearance, and stance before installation.
Consider suspension condition and intended road use when choosing equivalents.
Important Fitment Notes
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 1960 Fiat 600 Tires for Sale
Available 1960 Fiat 600 tire choices include Firestone and BFGoodrich options across radial and bias-ply construction. The product mix also gives buyers a clear appearance choice, with blackwall offerings in both sizes and a 2.00 inch wide whitewall available in 520-12.
Owners of a 1960 Fiat 600 usually need clarity on size, sub-model fitment, bias-ply versus radial choices, and how appearance goals affect selection. These FAQs also cover wheel checks, road-use inspection, and what to review before changing construction.
Tire Size & Fitment
What tire size fits a 1960 Fiat 600?
The 1960 Fiat 600 uses two primary tire sizes: 135R12 in radial construction and 520-12 in bias-ply construction. Both sizes are tied to 12-inch wheels, but they do not apply uniformly across every sub-model. Base and Multipla versions can use either size, while the Series uses 520-12.
That means the first step is identifying the exact version of the car and confirming which wheel setup is on it today. Many collector cars have changed wheels or replacement tires over the years, so matching the tire to the car’s current rim size, wheel width, and intended appearance is just as important as matching the year and model.
What size rim does a 1960 Fiat 600 use?
The 1960 Fiat 600 uses a 12-inch rim with both of its primary tire sizes. The 135R12 radial and the 520-12 bias-ply size each share that same rim diameter, which keeps the wheel-diameter question straightforward even though the tire constructions differ.
Rim diameter is only part of the fitment picture, so it still helps to confirm the wheel itself before choosing a tire. Width, condition, and any changes made during restoration or past service can influence which product makes the most sense, especially when moving between a vintage bias-ply setup and a radial alternative.
Do all 1960 Fiat 600 sub-models use the same tire size?
No, the sub-models do not all share the exact same fitment pattern. The 1960 Fiat 600 Base and 1960 Fiat 600 Multipla can use both 135R12 radial and 520-12 bias-ply tires, while the 1960 Fiat 600 Series uses the 520-12 bias-ply size.
That difference matters because it changes the buyer’s starting point. A Base or Multipla owner can compare construction types as part of the decision, but a Series owner should begin with the 520-12 fitment and then decide whether the goal is a blackwall or wide whitewall period-style presentation.
Bias-Ply & Radial Options
Is 520-12 a bias-ply or radial tire for the 1960 Fiat 600?
520-12 is a bias-ply tire size on the 1960 Fiat 600. It uses the older numeric sizing format associated with vintage bias-ply construction, and it appears as the traditional fitment path for this model, including the 1960 Fiat 600 Series.
That matters because a bias-ply tire affects both appearance and setup decisions differently than a radial. Owners choosing 520-12 usually focus on period-style proportions and sidewall presentation, while anyone considering a radial alternative should confirm wheel width, vehicle clearance, and whether the car’s current suspension and steering condition suit the change in construction.
What radial tire sizes are equivalent to 520-12?
Radial equivalents for 520-12 include 125R12 and P125/75R12. The 125R12 is the 80-series metric radial equivalent, while P125/75R12 is the P-metric 75-series radial option. Both serve as modern radial alternatives to the original bias-ply size rather than additional primary factory-style fitments.
A recommended rim-width range of 4 to 5 inches applies when evaluating those radial equivalents. Even with the correct rim diameter, the right approach is to compare the actual wheel, inspect steering and fender clearance, and make sure the car’s current configuration supports the conversion before treating either radial size as a usable substitute.
What should I check before converting my 1960 Fiat 600 from bias-ply to radial tires?
Start by confirming the exact bias-ply size on the car, the wheel diameter, and the wheel width. On a 1960 Fiat 600 using 520-12, radial alternatives include 125R12 and P125/75R12, with a recommended rim-width range of 4 to 5 inches for those equivalent sizes.
Construction changes should also prompt a broader fitment review. Look at tire-to-fender and tire-to-suspension clearance, inspect steering components, and make sure the car has not been altered with different wheels or ride height changes. That keeps the conversion grounded in the actual vehicle setup rather than assuming any radial equivalent will behave the same as the original bias-ply tire.
Choosing the Right Tire
What should I consider when choosing a tire for a 1960 Fiat 600?
The key decision points are the correct tire size for the sub-model, the construction type, and the appearance you want. A 1960 Fiat 600 may use either 135R12 radial or 520-12 bias-ply depending on the version, so the choice is not just about dimensions but also about how traditional or modern the finished setup should feel.
After size and construction, compare details that affect fitment and presentation. Sidewall style, tire series, wheel compatibility, and intended road use all matter on a compact vintage car like the 600. A restoration-minded owner may favor the visual character of the bias-ply size, while a road-use-focused owner may spend more time evaluating the radial path.
What sidewall styles are available for 1960 Fiat 600 tires?
The available sidewall styles for the 1960 Fiat 600 include blackwall and wide whitewall. Blackwall appears in both the 135R12 radial and 520-12 bias-ply offerings, while the 520-12 bias-ply size is also available with a 2.00 inch wide whitewall for a more distinctive vintage presentation.
Sidewall style shapes the visual tone of the car as much as the size itself. A blackwall keeps the look simple and understated, while a wide whitewall pushes the car toward a stronger period-style statement. It helps to decide on the appearance goal early, since that may narrow the construction and product choices before any deeper comparison begins.
What brands offer tires for the 1960 Fiat 600?
Firestone and BFGoodrich both offer tires for the 1960 Fiat 600. Firestone appears in the 135R12 radial fitment with the F560 Radial series, while BFGoodrich covers the 520-12 bias-ply size in the Silvertown Classic Bias Ply series with both blackwall and wide whitewall options.
Brand choice here is best treated as part of a broader selection process rather than a ranking exercise. Once the correct size and construction are established, compare each brand’s available series, sidewall treatment, and wheel compatibility details so the tire matches both the car’s intended use and the look you want the finished 600 to carry.
Restoration & Appearance
Which tire should I choose for a period-style 1960 Fiat 600?
For a period-style 1960 Fiat 600, the 520-12 bias-ply tire is the natural starting point because it preserves the vintage numeric sizing format and the traditional construction associated with the car’s era. Within that size, blackwall and 2.00 inch wide whitewall versions create two different visual directions without leaving the bias-ply fitment path.
The final choice depends on how strictly the car is being restored and what visual statement suits the build. Owners pursuing exact historical presentation should compare their car against marque references, photos, and restoration documentation, while owners focused on a broadly era-appropriate look can use the 520-12 size as the anchor and choose the sidewall style accordingly.
How does tire construction affect the appearance of a restored 1960 Fiat 600?
Tire construction changes the visual character of a restored 1960 Fiat 600 as well as its driving feel. A 520-12 bias-ply setup presents the car in a more traditional vintage style, while a 135R12 radial gives the car a more modern tire profile and a different overall look at curb level.
That is why construction should be chosen as part of the restoration plan rather than as an afterthought. Owners trying to preserve an older visual presentation often stay with bias-ply, while those who want a radial may accept a different appearance in exchange for that construction type. Matching the tire to the car’s intended finish makes the result feel more coherent.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1960 Fiat 600?
Yes, modifications can affect tire fitment on a 1960 Fiat 600 even when the tire size itself is correct. Different wheel widths, aftermarket wheels, ride-height changes, suspension work, or body repairs can all alter how a 135R12 or 520-12 tire sits within the car’s available space.
That is especially important on a small vehicle where clearances can be tighter than on larger classics. Any 600 with changed wheels or altered suspension should be checked at full steering lock and through normal suspension travel. Confirming those details before mounting tires helps avoid contact issues that a year-make-model match alone cannot rule out.
What should I inspect before driving a 1960 Fiat 600 on new tires?
Before driving a 1960 Fiat 600 on new tires, inspect the wheels, valve stems, and basic tire condition after installation. Make sure the tires seat properly, hold air, and clear the body and suspension. It also helps to verify that the chosen size matches the car’s sub-model and wheel setup.
A short check of the car itself is just as important. Look over steering components, wheel bearings, and suspension pieces, especially on a collector vehicle that may sit for long periods between drives. Starting with sound mechanical condition and proper inflation gives a new set of tires a better chance to perform as intended from the first miles.
How should tires on a collector 1960 Fiat 600 be maintained?
Tires on a collector 1960 Fiat 600 should be maintained with regular pressure checks, visual inspections, and attention to age-related condition. Even if the car is driven only occasionally, sidewall cracking, flat spotting, cuts, bulges, and slow air loss can develop over time on both radial and bias-ply tires.
Storage habits matter almost as much as mileage on a low-use vintage car. Keeping the 600 away from prolonged sunlight, excess heat, moisture, and ozone sources helps preserve the tires between outings. A careful inspection before each driving season or longer trip is a sensible routine, especially on a small classic where tire condition has an immediate effect on road manners.
