The 1973 Fiat 128 sits in an important moment for small European cars, when compact front-wheel-drive sedans, wagons, and sporty coupes were bringing sharp packaging and light, responsive road manners to everyday driving. That character makes tire choice especially relevant, because the 1973 Fiat 128 uses 13-inch radial fitments in 145R13 and 155R13 rather than a vintage bias-ply setup. Both sizes keep the car in a classic Euro-metric radial format, with blackwall choices from brands such as Michelin, Firestone, and Dunlop in series that range from touring-oriented designs to sportier period-style patterns. The real decision is confirming the exact size your car is running and matching that choice to wheel width, intended use, and appearance goals.
Which Tire Size Is Right for The 1973 Fiat 128
The 1973 Fiat 128 uses two primary tire sizes, both in radial construction on 13-inch rims. Because 145R13 and 155R13 appear across the covered Sedan & Sport L Coupe and Wagon configurations, the first step is confirming which size is actually on your car now and whether the wheel width supports it. From there, the decision becomes choosing the right brand, tire series, and overall character within the correct size.
145R13 is a Euro-metric radial size in which 145 refers to nominal section width in millimeters, R indicates radial construction, and 13 identifies the wheel diameter in inches. On the 1973 Fiat 128, it represents a narrow classic radial fitment that suits the car's light, compact character and traditional 13-inch wheel setup. Available choices include blackwall designs from Michelin and Firestone, including the Michelin XAS-FF and Firestone F560 Radial series. This size is worth considering when maintaining a slimmer original-style footprint and when wheel width and existing vehicle setup align with a 145-section tire.
155R13 follows the same Euro-metric format, with a nominal 155-millimeter section width, radial construction, and a 13-inch rim diameter. For the 1973 Fiat 128, it provides a slightly broader classic radial option while staying within the same traditional sizing language used on small European cars of the period. Blackwall choices in this size include Michelin XAS-FF and Dunlop SP Sport Aquajet products, giving buyers a mix of touring and sporty period-style personalities. This size deserves a closer look when the car is already set up for 155R13 or when wheel width and clearance support the wider fitment.
Tire fitment for the 1973 Fiat 128 is straightforward in one sense: both covered sub-model groups use the same two radial size options. Checking the exact sub-model still matters, because confirming the car's current wheel setup helps narrow the choice between the slimmer 145R13 and the wider 155R13.
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1973 Fiat 128 Sedan & Sport L Coupe
The 1973 Fiat 128 Sedan & Sport L Coupe uses the same two 13-inch radial fitments found across this vehicle line, centered on 145R13 and 155R13. That makes tire selection more about confirming which size the car is wearing now and choosing the right blackwall radial series for its road use and presentation.
The 1973 Fiat 128 Wagon also shares the two primary 13-inch radial tire sizes used on this model family. The practical step is verifying whether the wagon is currently set up for 145R13 or 155R13, then comparing the available blackwall radial options within that confirmed size.
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 1973 Fiat 128 Tires for Sale
Available 1973 Fiat 128 tires center on 145R13 and 155R13 blackwall radials from Michelin, Firestone, and Dunlop. The product grid lets you compare classic series such as Michelin XAS-FF, Firestone F560 Radial, and Dunlop SP Sport Aquajet, along with useful rim-width and load details where they apply.
These FAQs focus on the 1973 Fiat 128's 145R13 and 155R13 radial fitments, 13-inch rim considerations, brand and series differences, restoration-minded appearance choices, and the checks worth making before road use.
Tire Size & Fitment
What tire size fits a 1973 Fiat 128?
The 1973 Fiat 128 uses two primary tire sizes: 145R13 and 155R13. Both are radial tires in a classic Euro-metric format, and both are used on 13-inch rims across the covered Sedan & Sport L Coupe and Wagon configurations.
That means the key step is not guessing between bias-ply and radial, but confirming which of those two radial sizes your car is actually set up to use. Checking the existing tire size, wheel width, and overall clearance will help narrow the choice before comparing brands or tire series.
What size rim does a 1973 Fiat 128 use?
The 1973 Fiat 128 uses a 13-inch rim diameter with both of its primary tire sizes, 145R13 and 155R13. The tire size itself confirms that wheel diameter, since the final number in each size designates a 13-inch rim.
Wheel diameter is only part of the fitment picture, so it is still worth confirming the actual wheel width before choosing a tire. Some products in these sizes include rim-width guidance, and that can be especially helpful when deciding whether your car should stay with 145R13 or move toward 155R13.
Do all 1973 Fiat 128 sub-models use the same tire size?
The covered 1973 Fiat 128 sub-models share the same two tire size options rather than having completely different fitments by body style. Both the Sedan & Sport L Coupe and the Wagon use 145R13 and 155R13 radial tires on 13-inch rims.
Even with that shared fitment range, tire selection is not automatic from one car to the next. A Fiat 128 that still has its original-style wheel setup may point clearly toward one size, while a car with replacement wheels or previous tire changes should be checked carefully before ordering the next set.
Choosing the Right Tire
What should I consider when choosing a 145R13 or 155R13 tire for a 1973 Fiat 128?
Start with the correct size and wheel compatibility. The 1973 Fiat 128 uses 145R13 and 155R13 radial tires, so the first decision is confirming which size the car is set up for, then comparing available tires within that exact fitment.
After size confirmation, look at brand, tire series, rim-width guidance, and the kind of appearance you want from a blackwall radial. A slimmer 145R13 and a wider 155R13 can change the presentation of the car, so wheel width, clearance, and intended driving use all deserve a careful check.
What brands offer tires for the 1973 Fiat 128?
Michelin, Firestone, and Dunlop all offer applicable tires for the 1973 Fiat 128 in its listed sizes. Michelin appears in both 145R13 and 155R13 through the XAS-FF series, while Firestone covers 145R13 with the F560 Radial and Dunlop covers 155R13 with the SP Sport Aquajet.
Brand choice should follow size and fitment rather than the other way around. Once the correct 145R13 or 155R13 size is confirmed, comparing each brand's available series, construction details, and wheel-width compatibility gives a more useful path than focusing on name alone.
What tire series are available for the 1973 Fiat 128?
Three tire series are available across the 1973 Fiat 128 fitments: Michelin XAS-FF, Firestone F560 Radial, and Dunlop SP Sport Aquajet. Michelin XAS-FF appears in both 145R13 and 155R13, while the Firestone and Dunlop series each cover one of the two primary sizes.
That spread matters because series choice shapes the kind of period-style character you can maintain once the size is settled. Some buyers may want continuity across multiple cars in a collection, while others may focus on matching the Fiat's existing wheel setup and preserving a traditional small-car European look.
Restoration & Appearance
Which tire should I choose for a period-style 1973 Fiat 128?
A period-style 1973 Fiat 128 should begin with the correct radial size for the car's current setup, either 145R13 or 155R13. Both preserve the small Euro-metric radial look associated with compact European cars of the era, and available blackwall options keep the appearance clean and appropriately understated.
From there, the choice becomes one of stance and presentation as much as fitment. A slimmer 145R13 gives a narrower visual footprint, while 155R13 adds a little more visual width, so restorers should compare existing wheels, ride height, and historical references for their specific car before deciding.
Does correct tire fitment matter for a 1973 Fiat 128 restoration?
Correct tire fitment matters a great deal on a 1973 Fiat 128 because small changes in tire width or overall presentation can noticeably affect how the car sits and looks. Using the proper 13-inch radial format keeps the restoration aligned with the car's period and avoids an obviously mismatched modern appearance.
Appearance is only part of the equation. A restoration-minded tire choice should also respect wheel width, body clearance, and the intended use of the finished car, especially if the Fiat will be driven regularly rather than shown occasionally. Those details help preserve both proportion and practicality.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1973 Fiat 128?
Yes. Modifications can affect tire fitment on a 1973 Fiat 128 even when the tire size itself looks close to stock. Changes to wheel width, wheel offset, ride height, springs, or suspension components can alter how a 145R13 or 155R13 tire sits in the wheel opening.
That is why a modified car should be checked directly rather than matched by size code alone. Steering clearance, fender room, and the relationship between the tire and wheel all matter, particularly on a compact chassis where small dimensional differences can become noticeable quickly.
What should I inspect before driving a 1973 Fiat 128 on new tires?
Before driving a 1973 Fiat 128 on new tires, inspect the wheels for correct diameter and condition, confirm the installed tire size, and check that the tires seat properly and hold pressure. It is also wise to look over the suspension and steering components on a collector-era small car.
A short, careful test drive should follow the installation. Listen for rubbing, pay attention to steering feel, and recheck pressure after the first drive, especially if the car has been sitting or has had previous wheel changes. Those basic steps help catch fitment issues before regular use.
How should 145R13 and 155R13 tires on a collector 1973 Fiat 128 be maintained?
Collector-car tires on a 1973 Fiat 128 should be maintained with regular pressure checks, routine visual inspection, and careful monitoring for age-related deterioration. Even a low-mileage 145R13 or 155R13 radial can develop cracking, flat spotting, air loss, or other condition issues if the car sits for long periods.
Storage conditions matter almost as much as mileage. Keeping the Fiat away from prolonged sun, excess heat, moisture, and ozone sources helps preserve tire condition, and periodic movement can reduce stress from long stationary storage. Inspection before any longer drive remains important, even when tread looks good.
