The 1978 Plymouth Sapporo reflects the late-1970s shift toward smaller, more internationally influenced sporty coupes, with crisp styling and a roadgoing character that feels different from the larger domestic cars of the period. For tire selection, that matters because the 1978 Plymouth Sapporo uses a modern metric radial fitment: 195/70R14 on a 14-inch rim. That keeps the decision focused less on multiple factory sizes and more on choosing the right radial within the correct dimensions. In this size, the available option carries a blackwall presentation through Dunlop’s Sport Classic series. For a restoration-minded driver or a car headed back onto regular road use, staying focused on correct size, wheel condition, and overall fitment is the key first step.
Which Tire Size Is Right for The 1978 Plymouth Sapporo
The 1978 Plymouth Sapporo uses one primary tire size: 195/70R14, a radial fitment for a 14-inch rim. That same size is used across the covered sub-models, so the main decision is not which factory size applies, but which radial tire best suits the car’s intended appearance, road use, and wheel setup.
A 195/70R14 size uses a 195-millimeter nominal section width, a 70-series aspect ratio, radial construction, and a 14-inch rim diameter. On the 1978 Plymouth Sapporo, this is the core fitment, so the emphasis stays on preserving the car’s intended wheel diameter and overall tire proportion rather than sorting through multiple primary sizes. In this size, the available tire is a Dunlop Sport Classic with a blackwall sidewall and radial construction. It is the right place to start for an owner who wants to keep the Sapporo in its proper fitment range while choosing a tire that suits either restoration-minded use or regular driving.
Tire fitment is straightforward across the covered 1978 Plymouth Sapporo sub-models, because both use the same 195/70R14 radial size. Checking the exact sub-model still helps confirm that the car remains on the expected wheel setup, especially if wheels have been changed over the years.
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1978 Plymouth Sapporo Base
The 1978 Plymouth Sapporo Base uses the same 195/70R14 radial fitment that defines this model’s tire setup. That keeps tire selection centered on choosing the right radial tire style and confirming that the car still has the correct 14-inch wheel arrangement.
The 1978 Plymouth Sapporo Base w/aluminum wheels also uses 195/70R14 radial tires. Since the size remains the same, the practical focus shifts to wheel condition, proper rim compatibility, and selecting a tire that matches the car’s intended 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 1978 Plymouth Sapporo Tires for Sale
Available 195/70R14 choices for the 1978 Plymouth Sapporo focus on radial construction rather than multiple size paths. The current option is a Dunlop Sport Classic blackwall, giving buyers a straightforward comparison centered on correct size, series character, and compatible 14-inch fitment.
Common questions for the 1978 Plymouth Sapporo usually center on the 195/70R14 fitment, 14-inch wheel compatibility, radial tire selection, restoration-minded appearance, and the basic inspections worth making before putting a vintage late-1970s coupe back on the road.
Tire Size & Fitment
What tire size fits a 1978 Plymouth Sapporo?
The 1978 Plymouth Sapporo uses 195/70R14 tires. This is a radial size built for a 14-inch rim, and it is the primary fitment used across the covered Sapporo configurations, including the Base model and the Base w/aluminum wheels version.
That makes tire selection relatively straightforward, but the size should still be confirmed against the wheels actually on the car. Many older vehicles have had wheel changes over time, so checking rim diameter, wheel width, and visible clearance around the fenders and suspension is a smart step before replacing tires.
What size rim does a 1978 Plymouth Sapporo use?
The 1978 Plymouth Sapporo’s 195/70R14 tire fitment uses a 14-inch rim diameter. The tire size itself confirms that relationship, since the final number in 195/70R14 refers to the wheel diameter in inches for the tire it is designed to mount on.
Rim diameter is only part of the fitment picture, so it helps to verify that the wheel on the car is still the expected size before ordering tires. A Sapporo with aftermarket wheels or a past wheel swap may need closer measurement, especially if the goal is to keep the car within its intended proportions.
Do all 1978 Plymouth Sapporo sub-models use the same tire size?
Yes. The covered 1978 Plymouth Sapporo sub-models use the same 195/70R14 radial tire size. That includes both the Base model and the Base w/aluminum wheels version, so there is no split in primary tire size across those configurations.
Even with shared sizing, the actual car should still be checked before replacement tires are chosen. Aluminum wheels, replacement wheels, and long-term ownership changes can alter what is currently on the vehicle, so matching the tire to the real wheel diameter and overall wheel setup remains important.
Choosing the Right Tire
What should I consider when choosing a 195/70R14 tire for a 1978 Plymouth Sapporo?
Start with the basics: the correct size is 195/70R14, and the car uses a radial fitment on a 14-inch rim. Once that is confirmed, the real choice becomes how closely the tire suits the Sapporo’s intended use, whether that means a restoration-minded presentation, occasional driving, or regular road use.
Wheel condition and compatibility matter just as much as size on a late-1970s car. It also helps to compare the available tire’s construction, sidewall style, and load rating, then make sure the suspension, alignment, and clearances are in good shape so the new tires can work as intended.
What sidewall styles are available for 1978 Plymouth Sapporo tires?
The available 195/70R14 tire option for the 1978 Plymouth Sapporo uses a blackwall sidewall style. That gives the car a clean, understated presentation and keeps the selection focused on proper size and radial construction rather than choosing between several stripe or whitewall treatments.
Sidewall appearance still matters on a collector-era coupe, especially when the goal is to match the overall look of the car. A blackwall can suit a more restrained, sporty late-1970s appearance, but the more important point is confirming that the tire size and wheel setup remain correct before appearance becomes the deciding factor.
What brands offer tires for the 1978 Plymouth Sapporo?
The current tire option in the correct 195/70R14 size for the 1978 Plymouth Sapporo is from Dunlop. It is part of the Sport Classic series and uses radial construction, which aligns with the Sapporo’s primary fitment rather than requiring a shift to a different construction style.
With a focused brand selection, the buying decision becomes more about whether that tire suits the car’s purpose than about comparing several makers. An owner should still review the tire’s specifications alongside the vehicle’s actual wheel condition, expected driving use, and the overall presentation they want from the finished car.
Restoration & Appearance
Which tire should I choose for a period-style 1978 Plymouth Sapporo?
A period-style approach for a 1978 Plymouth Sapporo starts with keeping the correct 195/70R14 radial size on a 14-inch rim. Because this car already uses a metric radial fitment, staying in that size preserves the overall visual balance better than drifting into a noticeably different wheel or tire combination.
The available Dunlop Sport Classic blackwall keeps the presentation clean and appropriate for a late-1970s sporty coupe. Buyers aiming for exact historical originality should still compare any tire choice against marque references, photos, or other vehicle-specific documentation, since period-style appearance is not the same as a verified factory-delivery specification.
Does correct tire fitment matter for a 1978 Plymouth Sapporo restoration?
Yes, correct tire fitment matters because it affects both the look and the stance of a restored 1978 Plymouth Sapporo. Using the proper 195/70R14 radial size helps keep the car visually in scale with its 14-inch wheel setup instead of giving it an over-tired, under-tired, or mismatched appearance.
Fitment also influences practical details beyond appearance. A tire that is correct in size and construction for the wheel setup is easier to evaluate for clearance, handling feel, and road readiness, which is important on a restored car that may spend long periods parked before returning to regular driving.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1978 Plymouth Sapporo?
Yes, modifications can affect tire fitment on a 1978 Plymouth Sapporo even when the correct original-size tire is 195/70R14. Changes such as aftermarket wheels, different wheel widths, altered offsets, suspension lowering, or bodywork repairs can all change how much room the tire has once it is mounted and loaded.
That is why the car itself should be checked before replacement tires are chosen. A quick review of wheel diameter, wheel width, steering clearance, and suspension travel helps prevent surprises, especially on a late-1970s vehicle that may have seen decades of changes since it first left the showroom.
What should I inspect before driving a 1978 Plymouth Sapporo on new tires?
Before driving a 1978 Plymouth Sapporo on new tires, inspect the wheels for damage or corrosion, confirm that the tire size matches the 14-inch rim, and make sure the tires are inflated properly. It also helps to check for any interference at full steering lock and through normal suspension movement.
The rest of the chassis deserves attention as well, especially on a collector-era car. Alignment condition, worn bushings, loose steering parts, and weak shocks can all affect how new tires behave, so giving the car a basic mechanical review before regular road use is a sensible final step.
How should 195/70R14 tires on a collector 1978 Plymouth Sapporo be maintained?
195/70R14 tires on a collector 1978 Plymouth Sapporo should be kept properly inflated, inspected regularly, and protected from long periods of heat, sunlight, moisture, and ozone exposure. Even a car that is driven sparingly should have its tires checked for cracking, flat spotting, cuts, bulges, and gradual air loss.
Regular movement helps, but storage habits matter just as much on an older specialty car. Cleaning the tires, keeping the vehicle on a stable surface, and looking over tread and sidewall condition before each drive can help catch age-related issues that are easy to miss on a low-mileage collector coupe.
