The 1977 Mercury Capri sits squarely in the late-1970s sporty compact market, blending European influence with the kind of crisp proportions that still make these cars appealing to collectors today. Its character depends heavily on keeping the tire choice in scale with the car’s low, nimble stance. The 1977 Mercury Capri uses a 185/70R13 radial tire on a 13-inch rim, so the main decision is less about multiple fitments and more about selecting the right radial within that size. Available choices include blackwall, redline, and wide whitewall styles across several vintage and performance-oriented series. That makes it important to balance appearance, road use, and wheel compatibility before settling on a set.
Which Tire Size Is Right for The 1977 Mercury Capri
The 1977 Mercury Capri uses one primary tire size: 185/70R13, a radial tire fitted to a 13-inch rim. The Capri Base uses that same size, so the fitment question is straightforward. From there, the real choice becomes which radial best matches the car’s intended look and use, whether that means a traditional sidewall treatment or a more sporting blackwall presentation.
The 185/70R13 size uses modern metric sizing: 185 is the nominal section width in millimeters, 70 is the aspect ratio, R identifies radial construction, and 13 is the wheel diameter in inches. On a 1977 Mercury Capri, that means a period-appropriate radial fitment rather than an earlier bias-ply format. Available choices in this size include BFGoodrich, Avon, Dunlop, Michelin, and Vredestein, with blackwall, redline, and wide whitewall sidewall treatments. This size is the right starting point when keeping the Capri on its proper 13-inch wheel setup and choosing the tire character that suits the car.
Sub-model fitment is simple for the 1977 Mercury Capri. The covered Capri Base uses the same 185/70R13 radial tire size, so selection centers on tire type, sidewall appearance, and wheel compatibility rather than sorting between different fitments.
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1977 Mercury Capri Base
The 1977 Mercury Capri Base uses the same 185/70R13 radial tire found at the model level, keeping fitment straightforward on a 13-inch rim. That lets the focus shift to choosing between blackwall, redline, or wide whitewall styling and comparing the available radial tire series for road use and appearance.
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 1977 Mercury Capri Tires for Sale
The available 185/70R13 options span BFGoodrich, Avon, Dunlop, Michelin, and Vredestein, with choices that range from blackwall sporting radials to redline and wide whitewall Silvertown Radial styles. Comparing tire series, sidewall presentation, and rim-width compatibility is the key next step.
For the 1977 Mercury Capri, the most common questions center on the 185/70R13 size, 13-inch rim fitment, radial tire choices, sidewall styles, and what to inspect before putting a collector-era Capri back on the road.
Tire Size & Fitment
What tire size fits a 1977 Mercury Capri?
The 1977 Mercury Capri uses a 185/70R13 radial tire. That is the primary fitment for the Capri covered here, and the Capri Base uses the same size, so there is no separate alternate primary size to sort through within this fitment.
The practical step is confirming that the car still has its 13-inch wheels and that wheel width falls within the range required by the tire being considered. Once the size is confirmed, selection comes down to the type of radial, sidewall appearance, and how the tire suits the car’s restoration goals or regular road use.
What size rim does a 1977 Mercury Capri use?
The 1977 Mercury Capri tire fitment here is built around a 13-inch rim. The 185/70R13 size is a 13-inch radial, so wheel diameter needs to match that tire size before moving on to brand, series, or sidewall style.
Wheel width matters too, because the available 185/70R13 products do not all share the same approved rim-width range. A Capri that has been fitted with aftermarket wheels should have both diameter and width checked at the wheel itself, since a correct-looking tire size cannot compensate for an incompatible wheel setup.
Does the 1977 Mercury Capri Base use the same tire size?
Yes. The 1977 Mercury Capri Base uses the same 185/70R13 radial tire size as the core fitment for this model year. That keeps the size question simple and avoids the need to separate the Base from another sub-model with a different primary tire specification.
Even with shared sizing, the best tire choice can still vary based on how the car is being presented and driven. A restoration-oriented Capri may call for a traditional sidewall treatment, while a road-driven car may lean toward a blackwall radial series, so wheel measurements and intended use should still be checked before purchase.
Choosing the Right Tire
What should I consider when choosing a 185/70R13 tire for a 1977 Mercury Capri?
Start with the confirmed fitment: 185/70R13 on a 13-inch rim. From there, compare the available radial tires by sidewall style, tire series, approved rim-width range, and whether the Capri is being set up for restoration presentation, occasional cruising, or more regular road use.
A blackwall tire gives the Capri a more understated or sporting appearance, while redline and wide whitewall options create a stronger vintage visual statement. It also helps to compare product details such as weight and load figures where they are listed, especially if the car’s wheel setup has changed from stock dimensions over the years.
What sidewall styles are available for 1977 Mercury Capri tires?
The 1977 Mercury Capri’s 185/70R13 tire choices include blackwall, redline, and wide whitewall sidewall styles. Blackwall options appear across several radial series, while BFGoodrich Silvertown Radial is offered in both redline and 2-inch whitewall versions in this size.
That variety lets the tire change the car’s personality without changing the fitment itself. A buyer looking for a more restrained European-sport look may prefer blackwall, while a more customized or restoration-oriented presentation may point toward redline or wide whitewall, provided the wheel setup and intended appearance support that choice.
What brands offer tires for the 1977 Mercury Capri?
The 1977 Mercury Capri’s 185/70R13 size is available from BFGoodrich, Avon, Dunlop, Michelin, and Vredestein. Those brands appear across several distinct radial series, including Silvertown Radial, CR6ZZ, SP Sport Aquajet, Sport Classic, XDX-B, and Sprint Classic.
The most useful comparison is not brand name alone, but how each tire aligns with the Capri’s intended use and appearance. Looking at sidewall style, rim-width compatibility, and other product details will usually narrow the choice more effectively than treating all 185/70R13 tires as interchangeable versions of the same product.
Restoration & Appearance
Which tire should I choose for a period-style 1977 Mercury Capri?
A period-style 1977 Mercury Capri still starts with the correct fitment size, 185/70R13. Within that size, the decision becomes one of presentation: blackwall for a restrained sporting look, or a redline or wide whitewall option if the car’s build theme calls for a more pronounced vintage sidewall treatment.
Construction is simpler here because the primary fitment is already radial, so the appearance differences are largely driven by sidewall style and tire series. When exact originality matters, the safest path is to compare the car against marque literature, restoration photography, or model-specific historical references before choosing a decorative sidewall treatment.
Does correct tire fitment matter for a 1977 Mercury Capri restoration?
Yes, correct tire fitment matters because the Capri’s stance and proportions are closely tied to its wheel-and-tire package. Keeping the car on the proper 185/70R13 size preserves the intended scale of the 13-inch setup and avoids introducing a tire that changes the look more than expected.
Appearance is only part of the equation. Restored cars often carry replacement wheels, suspension changes, or long-stored components, so wheel diameter, wheel width, and clearance should be checked before mounting new tires, even when the tire itself is the proper size for the 1977 Mercury Capri.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1977 Mercury Capri?
Yes. A 1977 Mercury Capri may originally use a 185/70R13 tire on a 13-inch rim, but aftermarket wheels, changed wheel width, altered ride height, or suspension work can all affect how that size sits and clears once mounted on the car.
That is why the wheel should be measured rather than assumed, especially on a car that has changed hands or been restored over time. Clearance at the fender, steering, and suspension should also be checked on the actual vehicle, because correct nominal tire size does not eliminate fitment issues created by modifications.
What should I inspect before driving a 1977 Mercury Capri on new tires?
Before driving a 1977 Mercury Capri on new tires, inspect the wheels for correct diameter and sound condition, then confirm that the tires are mounted and inflated properly. Lug hardware, valve stems, and general wheel integrity deserve the same attention as the tire size itself.
A collector-era car should also be checked for suspension wear, steering play, and any sign of rubbing once the car is back on the ground. After the first miles, it is wise to recheck air pressure and look over the sidewalls and tread to make sure the new 185/70R13 tires are settling in cleanly.
How should 185/70R13 tires on a collector 1977 Mercury Capri be maintained?
185/70R13 tires on a collector 1977 Mercury Capri should be maintained with regular pressure checks, routine visual inspection, and attention to age-related deterioration. Even a low-mile car can develop cracking, flat spotting, air loss, or other issues simply from storage and limited use.
Good storage habits make a difference, especially for a car that is driven seasonally. Keeping the Capri away from prolonged sunlight, moisture, and ozone sources helps protect the tires, and occasional inspections of tread, sidewalls, and valve stems make it easier to catch problems before a longer drive.
