The 1979 Fiat 131 sits in an interesting spot for enthusiasts who appreciate practical European sedans and wagons from the late 1970s. In Brava form, it combines everyday usability with the lighter, nimble character that makes compact Italian cars appealing to collectors and weekend drivers today. Tire fitment for the 1979 Fiat 131 centers on two 13-inch radial sizes, 160R13 and 165R13, so the real question is confirming which size is on the car now and how closely a replacement matches that setup. Available choices also lean toward traditional blackwall radial styles, with Michelin and Dunlop options that suit preservation-minded road use.
Which Tire Size Is Right for The 1979 Fiat 131
The 1979 Fiat 131 uses two primary tire sizes, 160R13 and 165R13, and both are radial tires for 13-inch rims. Because both the Sedan (Brava) and Wagon (Brava) can use either size, the first step is confirming which size is already fitted to the car, then comparing available product choices, wheel width compatibility, and the overall look you want to preserve.
A 160R13 is a Euro-metric radial size with a nominal section width of 160 millimeters, radial construction, and a 13-inch rim diameter. On a 1979 Fiat 131, it represents the narrower of the two primary fitment choices and keeps the car within its correct period sizing language. This format is commonly associated with traditional metric radial proportions rather than modern low-profile sizing. Choosing 160R13 starts with verifying that the car is actually set up for that size, especially if wheels, suspension height, or prior replacement tires may have changed the current fitment.
A 165R13 is a Euro-metric radial size that uses a nominal 165-millimeter section width, radial construction, and a 13-inch rim. For the 1979 Fiat 131, it is one of the primary fitment sizes and also the size with available Michelin and Dunlop product choices in traditional blackwall form. Those options include the Michelin XAS-FF, Michelin XAS, and Dunlop SP Sport Aquajet, giving buyers some variety in tire series within the same basic fitment. It is a strong size to evaluate when the goal is maintaining a classic European radial appearance while staying with the car's 13-inch wheel setup.
Fitment is fairly straightforward across the covered 1979 Fiat 131 sub-models because both the Sedan (Brava) and Wagon (Brava) use the same two primary tire sizes. Checking the exact sub-model still helps confirm that the car remains on the expected 13-inch wheel setup before choosing between 160R13 and 165R13.
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1979 Fiat 131 Sedan (Brava)
The 1979 Fiat 131 Sedan (Brava) uses the same 160R13 and 165R13 radial tire fitment range found elsewhere in this model line. That means the decision usually comes down to confirming which size is already on the car and then selecting the right radial product style for appearance, wheel compatibility, and regular road use.
The 1979 Fiat 131 Wagon (Brava) also uses 160R13 and 165R13 radial tires on 13-inch rims. Tire selection is therefore more about verifying the wagon's present wheel and tire setup, then choosing the size and product that best suits a stock-looking presentation or practical collector driving.
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 1979 Fiat 131 Tires for Sale
Available 165R13 choices focus on classic blackwall radial construction from Michelin and Dunlop. The product grid lets buyers compare tire series such as Michelin XAS-FF, Michelin XAS, and Dunlop SP Sport Aquajet, along with rim-width compatibility where stated.
These FAQs focus on the 1979 Fiat 131's two primary radial tire sizes, 13-inch rim fitment, product selection, period-style appearance, and the practical checks worth making before putting a collector-era Fiat back on the road.
Tire Size & Fitment
What tire size fits a 1979 Fiat 131?
The 1979 Fiat 131 uses two primary tire sizes: 160R13 and 165R13. Both are radial tires built for 13-inch rims, and both appear across the covered Fiat 131 Brava sedan and wagon configurations.
That means the main fitment question is not whether the car takes a radial tire, but which of those two radial sizes is correct for the vehicle in front of you. Checking the tire already on the car, the wheel width, and any past wheel or suspension changes helps narrow the choice before comparing available replacement options.
What size rim does a 1979 Fiat 131 use?
The primary tire sizes for the 1979 Fiat 131 both use a 13-inch rim diameter. Whether the car is fitted with 160R13 or 165R13, the wheel diameter tied to those sizes remains 13 inches.
Rim diameter is only part of the fitment picture, so it is still worth confirming the actual wheel on the car before ordering tires. A 13-inch wheel that has been replaced with a different width or aftermarket design can affect which tire works best, especially when moving between the two available primary sizes.
Do all 1979 Fiat 131 sub-models use the same tire size?
The covered 1979 Fiat 131 sub-models share the same tire-size range. Both the Sedan (Brava) and Wagon (Brava) use 160R13 and 165R13 radial tires on 13-inch rims.
Shared fitment across the sub-models makes the search easier, but it does not automatically mean every car still wears the same setup today. Older cars are often changed over time, so checking the current tire size, wheel width, and overall clearance is still the best way to confirm which of the two primary sizes belongs on a specific Fiat 131.
Choosing the Right Tire
What should I consider when choosing a 165R13 tire for a 1979 Fiat 131?
Start with the basics: confirm that 165R13 is the size actually being used on the car, verify the 13-inch wheel setup, and make sure the wheel width falls within the tire's intended range. On this Fiat 131, 165R13 is available in radial construction with classic blackwall presentation.
From there, selection becomes more about product character than basic fitment. Michelin and Dunlop options give the size some variety, and certain 165R13 products also include stated rim-width compatibility, tire series differences, and load information. Those details matter when balancing a stock-looking appearance with practical road use on a collector-era Fiat.
What sidewall styles are available for 1979 Fiat 131 tires?
The available 165R13 products for the 1979 Fiat 131 use a blackwall sidewall style. That keeps the visual presentation simple and in line with the understated look many owners want from a late-1970s European sedan or wagon.
Sidewall style affects appearance more than core fitment, but it still matters on a restoration-minded car. A blackwall tire tends to preserve a restrained period feel without drawing attention away from the body and wheel design. Once the correct size is confirmed, sidewall style becomes part of choosing the overall look rather than changing the vehicle's fundamental tire requirements.
What brands offer tires for the 1979 Fiat 131?
The 165R13 fitment for the 1979 Fiat 131 is available from Michelin and Dunlop. Michelin choices include the XAS-FF and XAS series, while Dunlop is represented by the SP Sport Aquajet.
Brand choice should be weighed alongside size, wheel compatibility, and the kind of presentation you want from the car. Since these options stay within a classic blackwall radial style, the comparison is less about dramatic visual differences and more about selecting the tire series that best suits a preserved road car, weekend driver, or restoration-oriented project.
Restoration & Appearance
Which tire should I choose for a period-style 1979 Fiat 131?
A period-style approach starts by staying with one of the Fiat 131's primary radial sizes, 160R13 or 165R13, on the correct 13-inch rim diameter. That keeps the car in the sizing conventions it used in the late 1970s instead of shifting to a visibly more modern tire profile.
Among currently available products, 165R13 blackwall radial options from Michelin and Dunlop suit a traditional European look. Exact originality can involve details beyond size alone, so owners pursuing a highly exact restoration should also compare surviving vehicle photos, marque references, and other period documentation before settling on a specific tire series.
Does correct tire fitment matter for a 1979 Fiat 131 restoration?
Correct tire fitment matters because it affects both the look and stance of a restored 1979 Fiat 131. Using the proper 13-inch radial sizing language helps the car retain the visual character expected from a late-1970s Fiat sedan or wagon.
Fitment also influences practical details such as wheel compatibility and body clearance, especially on older vehicles that may have had wheel swaps over the years. Even when the car is not being restored to a highly judged standard, choosing the right size range is one of the simplest ways to keep the finished vehicle visually coherent and mechanically sensible.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1979 Fiat 131?
Yes. Even though the 1979 Fiat 131 uses 160R13 and 165R13 on 13-inch rims, modifications can change how well either size works on the car. Different wheel widths, aftermarket wheels, altered ride height, or suspension changes can all affect clearance and overall fitment.
That is especially important on older collector cars, where decades of owner changes are common. A Fiat 131 that still appears stock may not have its original wheel setup. Verifying the actual wheel dimensions and checking steering, fender, and suspension clearance before mounting new tires helps avoid choosing a size that suits the catalog but not the car's present configuration.
What should I inspect before driving a 1979 Fiat 131 on new tires?
Before road use, inspect the wheels for damage or corrosion, confirm that the tire size matches the wheel and vehicle setup, and make sure each tire is seated properly and holding air. It is also smart to look over suspension and steering components on a 1979 Fiat 131 before putting fresh tires into service.
A new tire cannot correct worn mechanical parts or poor wheel condition. Uneven clearance, loose front-end components, or neglected alignment can affect how the car feels on the road and how the tires wear. A careful once-over before the first drive is especially worthwhile on a Fiat that has spent long periods parked or has recently returned to service.
How should tires on a collector 1979 Fiat 131 be maintained?
Collector-car tire maintenance starts with regular pressure checks, visual inspection, and keeping an eye on age-related condition as much as tread depth. On a lightly used 1979 Fiat 131, sidewall cracking, flat spotting from storage, cuts, bulges, or slow air loss can matter more than outright wear.
Storage conditions also make a difference. Keeping the car away from prolonged sunlight, excess heat, and ozone sources helps preserve tire condition over time. Periodic inspection is worthwhile even when the Fiat is not being driven often, since classic cars can spend months parked and still need roadworthy tires when they return to use.
