1974 Subaru DL Tires

The 1974 Subaru DL uses two primary tire sizes: 155R13 in radial construction and 6.15-13 in bias-ply construction. Both sizes are associated with the DL and both use a 13-inch rim, so the fitment question is tied more to tire type and vehicle setup than to wheel diameter alone.

That means the next step is confirming what is actually on the car now. A DL that has stayed closer to an earlier configuration may still suit a 6.15-13 bias-ply approach, while a car already running radial-compatible wheels may point you toward 155R13.

The 1974 Subaru DL uses a 13-inch rim with both of its primary tire sizes. The 155R13 radial and the 6.15-13 bias-ply each correspond to a 13-inch wheel diameter, which keeps rim diameter consistent even though the sizing systems and constructions are different.

Rim diameter is only one part of the fitment picture, so it still helps to verify the wheel that is on the car today. Older Subarus are often changed over time, and wheel width or aftermarket replacements can affect which tire construction makes the most sense.

Yes. The covered 1974 Subaru DL sub-models share the same two primary tire size options: 155R13 radial and 6.15-13 bias-ply. That applies to both the 4 Dr. Sedan and the Wagon, so there is no separate tire-size split between those two sub-models.

Even with shared fitment, the choice still matters because the two sizes represent different constructions and different tire character. A sedan or wagon kept closer to a vintage presentation may point one direction, while a car already set up around radial use may point the other.

6.15-13 is a bias-ply tire size on the 1974 Subaru DL. It uses the older numeric bias-ply sizing convention, where the number reflects nominal section width and the final number identifies the 13-inch rim diameter.

That matters because a bias-ply setup and a radial setup are not the same decision, even when they share the same wheel diameter. Before choosing 6.15-13, check that the wheel, the vehicle’s current setup, and your appearance goals all line up with staying with a traditional bias-ply tire.

A 1974 Subaru DL can be approached either way, since both 6.15-13 bias-ply and 155R13 radial fitments are associated with the car. The better choice depends on whether you want to preserve a more traditional tire presentation or maintain a radial-equipped setup already on the vehicle.

Construction choice should be made after confirming the actual wheels and how the car will be used. A low-use preserved car may be selected differently than a Subaru intended for regular road driving, and mixed assumptions about old wheels can lead to avoidable fitment problems.

Start by confirming that the car is using the correct 13-inch wheels for the radial size you are considering and that the present setup is suitable for 155R13 radial tires. The two DL tire options share the same rim diameter, but that does not make the change automatic in every case.

Wheel width, overall tire dimensions, and clearance around steering and suspension should be reviewed before conversion. It also helps to inspect the condition of the wheels themselves, especially on a collector car that may have older rims or a long service history.

The first consideration is making sure 155R13 is the size and construction you want for your 1974 Subaru DL, since this car can also use a 6.15-13 bias-ply tire. Once that is settled, compare the available radial choices by brand, tire series, sidewall treatment, and wheel compatibility.

Michelin and Dunlop options in this size both use blackwall styling, so the finer distinctions come from series character and fitment details such as rim-width range. A buyer trying to preserve an imported period feel may evaluate differently than someone simply matching an existing radial setup.

For the 155R13 radial size used on the 1974 Subaru DL, available brands include Michelin and Dunlop. Those options cover classic blackwall radial offerings in a size that suits the compact imported character of the car without moving away from the original 13-inch format.

Brand choice should still come after size and construction choice, not before it. A Subaru DL owner first needs to confirm whether the car is staying with radial tires or being kept in a 6.15-13 bias-ply setup, since those are two different paths.

Choosing between available 155R13 tires for a 1974 Subaru DL comes down to matching the tire to the car’s setup and your intended presentation. The available radial choices differ by brand and tire series, including Michelin XAS-FF and Dunlop SP Sport Aquajet, while both maintain blackwall styling.

Look beyond the brand name and compare details that affect use on the car, such as construction confirmation, 13-inch rim compatibility, and the kind of period look you want. A preservation-minded owner may focus on classic-series character, while another may simply want a consistent radial replacement.

A period-style 1974 Subaru DL can point toward either of its two primary fitments, depending on the direction of the restoration. The 6.15-13 bias-ply supports a more traditional vintage presentation, while 155R13 reflects the compact imported radial format that also belongs to this model’s tire story.

The right choice depends on the exact look you want and how closely the car is being restored to a specific point in its life. When originality matters at a finer level, marque references, period photos, and vehicle-specific documentation are worth checking before settling on a final tire style.

Tire construction changes the visual character of a restored 1974 Subaru DL as much as it changes the fitment path. A 6.15-13 bias-ply gives the car a more traditional small-car stance and presentation, while a 155R13 radial keeps the same 13-inch wheel diameter but presents the car in a more modernized radial format.

That visual difference matters on a compact Subaru because the tires are a noticeable part of the car’s overall proportion. Matching construction to the restoration goal helps avoid a finished look that feels out of step with the era or with the rest of the car’s details.

Yes. Modifications can change tire fitment on a 1974 Subaru DL even when the original sizes are known. Aftermarket wheels, altered wheel width, suspension changes, or body modifications can all affect whether a 155R13 radial or 6.15-13 bias-ply remains the most appropriate choice.

That is why an older car should be checked as it sits, not only as it left the factory decades ago. Wheel diameter may still be 13 inches, but clearance, steering sweep, and overall compatibility can shift once the car has been changed over time.

Before driving a 1974 Subaru DL on new tires, inspect the wheels for condition and size, confirm proper inflation, and look over the suspension and steering for any obvious looseness or interference. It also helps to verify that the tire construction on the car matches the tire type you selected.

A short, careful road check is smart on a low-use collector Subaru, especially after tire installation. Watch for rubbing, unusual pull, vibration, or uneven stance, and recheck air pressure after the first miles so the new setup starts on solid footing.

Tires on a collector 1974 Subaru DL should be maintained with regular pressure checks, visual inspection, and attention to age-related deterioration. Even a car that sees limited road use can develop sidewall cracking, flat spotting, air loss, or other condition issues simply from time and storage.

Storage environment matters almost as much as mileage on an older Subaru. Keeping the car away from prolonged sunlight, heat, moisture, and ozone sources helps protect the tires, and periodic inspection is important whether the car runs 155R13 radials or 6.15-13 bias-ply tires.