The 1984 Plymouth Reliant sits squarely in the practical front-wheel-drive compact era that helped define everyday American transportation in the 1980s. As one of Chrysler's familiar K-car offerings, it appeals today to owners who appreciate honest usability, period styling, and preservation of a car that was once a common sight on U.S. roads. Tire fitment for the 1984 Plymouth Reliant centers on radial construction, with 175/80R13 and 185/70R14 sizes both used on this model. That creates a meaningful choice between 13-inch and 14-inch wheel fitment, along with differences in sidewall presentation and tire series. The key is confirming the wheel setup on the car before choosing a tire that suits restoration goals and regular road use.
Which Tire Size Is Right for The 1984 Plymouth Reliant
The 1984 Plymouth Reliant uses two primary tire sizes, and the first step is confirming whether the car has 13-inch or 14-inch wheels. Both sizes are radial fitments, and all covered sub-models can use either size, so the real decision comes down to the wheel diameter currently on the car and the kind of appearance or product style you want once that wheel size is confirmed.
175/80R13 is a metric radial size in which 175 is the nominal section width in millimeters, 80 is the aspect ratio, R identifies radial construction, and 13 is the rim diameter in inches. On the 1984 Plymouth Reliant, this size supports the smaller 13-inch wheel setup and keeps the fitment in a clearly period-appropriate radial format. Available choices include Maxxis and BFGoodrich, with narrow whitewall and wide whitewall sidewall treatments. This size is the one to evaluate when the car retains or uses 13-inch wheels and a more traditional sidewall presentation is part of the goal.
185/70R14 is a metric radial size where 185 gives the nominal section width in millimeters, 70 is the aspect ratio, R marks radial construction, and 14 identifies the wheel diameter in inches. For the 1984 Plymouth Reliant, this size belongs with the 14-inch wheel setup, so wheel confirmation matters before moving any further. Product choice is broader here, with BFGoodrich, Avon, Dunlop, Michelin, and Vredestein options, including blackwall and wide whitewall styles across several tire series. It is the size to consider when the car is equipped with 14-inch wheels and the buyer wants a wider range of brand and appearance choices.
Tire fitment is straightforward across the covered 1984 Plymouth Reliant sub-models because Base, Custom, and SE models share the same two size paths. The important check is not the trim name alone, but whether the car is currently wearing 13-inch or 14-inch wheels.
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1984 Plymouth Reliant Base
The 1984 Plymouth Reliant Base can use either 175/80R13 radial or 185/70R14 radial fitment depending on the wheel setup on the car. That makes wheel-diameter confirmation the first step, followed by selecting the sidewall style and tire series that best matches the car's intended appearance and road use.
The 1984 Plymouth Reliant Custom shares the same radial tire-size choices as the other covered sub-models, with both 175/80R13 and 185/70R14 in play. Tire selection therefore comes down to confirming whether the car has 13-inch or 14-inch wheels, then comparing available whitewall or blackwall product options within that size.
The 1984 Plymouth Reliant SE follows the same fitment pattern, using either 175/80R13 radial or 185/70R14 radial depending on wheel diameter. Once the wheel size is confirmed, the decision shifts toward presentation and product choice, including whether a traditional whitewall or a cleaner blackwall look suits the car better.
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 1984 Plymouth Reliant Tires for Sale
Available 1984 Plymouth Reliant tires include 175/80R13 and 185/70R14 radial options from Maxxis, BFGoodrich, Avon, Dunlop, Michelin, and Vredestein. Choices vary by tire series, blackwall or whitewall presentation, and rim-width compatibility, giving both restoration-minded and driver-oriented owners useful ways to compare the product grid.
Common questions for the 1984 Plymouth Reliant usually center on choosing between 175/80R13 and 185/70R14, confirming wheel diameter, comparing whitewall and blackwall options, and checking the car carefully before returning it to regular road use.
Tire Size & Fitment
What tire size fits a 1984 Plymouth Reliant?
The 1984 Plymouth Reliant uses two primary tire sizes: 175/80R13 and 185/70R14. Both are radial tire fitments, and both appear across the covered Reliant sub-models, so the car does not rely on a single universal size across every wheel setup.
The practical difference is wheel diameter. A Reliant with 13-inch wheels needs the 175/80R13 size, while a Reliant with 14-inch wheels needs the 185/70R14 size. Before selecting a tire, check the actual wheel diameter on the car rather than assuming the size from the trim name alone, especially if wheels have ever been changed.
What size rim does a 1984 Plymouth Reliant use?
A 1984 Plymouth Reliant can use either a 13-inch or 14-inch rim, depending on which tire size is on the car. The 175/80R13 size belongs on a 13-inch wheel, while the 185/70R14 size belongs on a 14-inch wheel.
That makes rim confirmation the first fitment step before comparing brands or sidewall styles. It is also worth checking wheel width, since the available products carry rim-width ranges such as 4.50 to 6.00 inches in 175/80R13 and roughly 4.5 to 6.5 inches in several 185/70R14 offerings. A quick wheel check helps avoid choosing the right tire size for the wrong wheel.
Do all 1984 Plymouth Reliant sub-models use the same tire size?
Base, Custom, and SE versions of the 1984 Plymouth Reliant share the same two tire-size options: 175/80R13 and 185/70R14. The difference is not tied to one covered sub-model using a unique size, but to whether the individual car is equipped with 13-inch or 14-inch wheels.
That simplifies shopping by keeping the size question focused on the wheel setup rather than the badge on the car. Even so, it is still smart to inspect the actual wheels and existing tire markings before replacement. On older cars, wheel swaps over the years are common enough that a trim name alone should not be treated as the final answer.
Choosing the Right Tire
What should I consider when choosing a tire for a 1984 Plymouth Reliant?
Start with the correct size for the wheel currently on the car: 175/80R13 for 13-inch wheels or 185/70R14 for 14-inch wheels. From there, compare radial construction details, sidewall style, tire series, and rim-width compatibility so the tire suits both the wheel and the character you want for the car.
A restoration-oriented Reliant may lean toward whitewall presentation, while a cleaner driver-style look may point toward blackwall choices in 185/70R14. It also helps to compare product details such as load figures where stated and the approved wheel-width range. Matching the tire to the wheel, the appearance goal, and the way the car is used usually leads to a better decision than shopping by size alone.
What sidewall styles are available for 1984 Plymouth Reliant tires?
Available sidewall styles for the 1984 Plymouth Reliant include narrow whitewall, wide whitewall, and blackwall, depending on the tire size and product selected. The 175/80R13 offerings focus on whitewall treatments, while 185/70R14 opens up both blackwall and wide whitewall choices.
That sidewall choice can change the car's look as much as the tire brand itself. A whitewall can support a more traditional 1980s passenger-car presentation, while blackwall tires can give the Reliant a plainer and more understated appearance. Once the correct wheel diameter is confirmed, sidewall style becomes one of the most visible ways to tailor the finished look.
What brands offer tires for the 1984 Plymouth Reliant?
Tires for the 1984 Plymouth Reliant are available from Maxxis, BFGoodrich, Avon, Dunlop, Michelin, and Vredestein. Brand choice depends partly on the size, with 175/80R13 offered in a smaller group and 185/70R14 opening up a broader range of brands and tire series.
The useful comparison is not simply brand name, but how each option is configured. Some choices emphasize whitewall appearance, while others are blackwall radials with different series identities and wheel-width ranges. Once the correct size is confirmed, compare the tire's presentation, intended use, and wheel compatibility so the selection makes sense for the particular Reliant in front of you.
Restoration & Appearance
Which tire should I choose for a period-style 1984 Plymouth Reliant?
A period-style 1984 Plymouth Reliant usually starts with the correct wheel diameter and one of the two proper radial sizes: 175/80R13 or 185/70R14. From there, whitewall options can create a more traditional passenger-car look, especially in the 175/80R13 size where the available choices are whitewall-focused.
The right appearance depends on how the car is being presented. A lightly preserved driver may suit a subtle narrow whitewall, while a more formal look may call for a wider whitewall treatment. When exact originality matters, compare the tire choice against vehicle-specific historical references so period style and restoration accuracy are not treated as the same thing.
How does tire construction affect the appearance of a restored 1984 Plymouth Reliant?
For the 1984 Plymouth Reliant, the primary fitments are already radial, so the construction question is less about switching from bias-ply to radial and more about how a radial tire is presented. In this case, sidewall styling and tire series have a bigger visual effect than construction type alone.
That means a restored Reliant can look noticeably different even when the size remains correct. A blackwall 185/70R14 gives a simpler, more restrained appearance, while narrow or wide whitewall versions create a stronger period flavor. Choosing the right presentation helps the car look consistent with its era without making unsupported claims about exact factory originality.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1984 Plymouth Reliant?
Yes. Even though the 1984 Plymouth Reliant uses 175/80R13 and 185/70R14 as its primary sizes, wheel or suspension changes can alter what works on the car in practice. Aftermarket wheels, altered wheel width, suspension changes, or body modifications can all affect clearance and tire selection.
A modified Reliant should be checked carefully before replacing tires. Confirm the actual wheel diameter and width, then inspect how much room exists at the fenders, steering components, and suspension. A tire that is correct for the original wheel setup is not automatically right for a car that has been lowered, widened, or fitted with non-original wheels.
What should I inspect before driving a 1984 Plymouth Reliant on new tires?
Before driving a 1984 Plymouth Reliant on new tires, inspect the wheels, valve stems, lug hardware, and general suspension and steering condition. It is also smart to confirm that the tire size matches the wheel diameter and that the tire is seated properly and inflated to the appropriate operating pressure for the application.
A roadworthy check should also include looking for rubbing at full steering lock, verifying that the tires clear the fenders, and making sure old alignment or suspension issues are not still present. On a car of this age, worn bushings, sagging springs, or neglected brakes can affect how new tires behave, even when the size itself is correct.
How should tires on a collector 1984 Plymouth Reliant be maintained?
Tires on a collector 1984 Plymouth Reliant should be inspected regularly for cracking, bulges, cuts, irregular wear, and loss of air pressure. Because many preserved cars are driven infrequently, age and storage conditions matter just as much as tread depth when judging whether a tire is still suitable for road use.
Good maintenance also means keeping the car stored away from prolonged sunlight, excess heat, moisture, and ozone sources when possible. Check pressures before driving, especially after longer periods of storage, and look over the sidewalls closely. A Reliant that spends much of its life parked can develop tire condition issues that are easy to miss until the next outing.
