1973 Subaru DL Tires

A 1973 Subaru DL uses either a 155R13 radial tire or a 6.15-13 bias-ply tire. Both are primary fitment sizes for this model and both use a 13-inch rim, so the main distinction is tire construction and sizing format rather than wheel diameter.

That means the first step is deciding whether the car is being kept in a more traditional bias-ply presentation or set up with a radial tire in the proper 13-inch size. It is also worth confirming the actual wheels on the car, since many older imports have been changed over the years and wheel width still matters when selecting a specific tire.

The 1973 Subaru DL uses a 13-inch rim with both of its primary tire sizes. The radial 155R13 and the bias-ply 6.15-13 are both built around that same wheel diameter, which simplifies the basic diameter question for either covered sedan sub-model.

Even with the same diameter, wheel setup should still be checked before choosing a tire. Rim width, wheel condition, and any aftermarket replacements can affect which specific tire is appropriate, especially when moving between bias-ply and radial construction. A careful look at the wheels already on the car helps avoid choosing a tire that is correct in diameter but mismatched in overall setup.

Yes. Both the 1973 Subaru DL 2 Dr. Sedan and the 1973 Subaru DL 4 Dr. Sedan (Stage 1) use the same two tire size options: 155R13 in radial construction and 6.15-13 in bias-ply construction. There is no separate sub-model-only tire size within the covered fitments.

That makes sub-model identification less about unlocking a different size and more about confirming the car itself before choosing between the two construction types. The more important checks are the actual wheels on the car, the look the owner wants, and whether the Subaru is being kept closer to a restoration-minded presentation or set up around radial tire use.

On a 1973 Subaru DL, 6.15-13 is a bias-ply tire size. It uses the older numeric sizing format, where the leading number reflects nominal section width in inches and the final number identifies the 13-inch rim diameter.

Choosing 6.15-13 keeps the car in a more traditional construction style and generally suits buyers focused on period-style appearance. Before selecting one, it helps to confirm that the wheel condition, suspension condition, and overall use of the car align with a bias-ply setup, especially if the Subaru has spent years off the road or has been modified since new.

That decision depends on what matters most for the car. A 1973 Subaru DL can use either a 6.15-13 bias-ply tire or a 155R13 radial, so both constructions are part of the vehicle's fitment picture rather than one being merely an off-size substitute.

Bias-ply tires usually appeal to owners who want a more traditional period-style appearance, while 155R13 radial tires keep the car in a compact metric radial format that also belongs to the era. The best approach is to match the construction to the wheels on the car, the intended driving use, and how closely the finished Subaru should reflect its original-era presentation.

Start by confirming that the Subaru is set up for the 155R13 radial size on a 13-inch wheel and that the wheels themselves are suitable for the specific radial tire being considered. The covered radial products include blackwall options with defined rim-width requirements, so wheel width matters as much as wheel diameter.

A conversion also deserves a close look at clearance, suspension condition, steering feel, and the general state of the car after years of storage or prior repairs. Even when the size is correct, an older vehicle can have wheel, alignment, or ride-height changes that affect the outcome, so the change should be treated as a setup decision rather than an automatic swap.

The key considerations are correct size, radial construction, wheel compatibility, and the overall character of the tire. On the 1973 Subaru DL, 155R13 keeps the car in the proper 13-inch radial fitment and is available in blackwall form from brands such as Michelin and Dunlop.

From there, compare the specific tire series, rim-width suitability, and how closely the look matches the car's intended finish. A neatly restored sedan may call for one visual approach, while a regularly driven survivor may call for another. Checking the actual wheel width before purchase is especially important, since compact imports can vary after decades of repairs or wheel changes.

The available 155R13 radial products for the 1973 Subaru DL use a blackwall sidewall style. That gives the car a clean, understated presentation that suits many small imported sedans of the period without adding whitewall or stripe treatments that can change the visual balance.

Sidewall style matters because it affects how the whole car reads from the curb, especially on a compact sedan with relatively small 13-inch wheels. If appearance is a priority, consider whether the goal is a restrained driver-style look or a more restoration-oriented presentation. The tire can be mechanically correct in size but still change the car's character if the sidewall look feels out of place.

Michelin and Dunlop both offer 155R13 radial tires for the 1973 Subaru DL. The available radial series include Michelin XAS-FF and Dunlop SP Sport Aquajet, giving owners a choice between recognized vintage-style radial offerings in the correct 13-inch fitment.

Brand alone should not make the decision. It is more useful to compare each tire's series, intended presentation, and wheel-width compatibility against the actual Subaru being fitted. That approach helps narrow the choice to the tire that best matches the car's use and visual direction, rather than assuming one brand is automatically better for every DL.

For a period-style 1973 Subaru DL, the decision usually starts with construction. The 6.15-13 bias-ply size gives the car a more traditional early-1970s presentation, while the 155R13 radial keeps it in a compact import radial format that also belongs to the era.

The right choice depends on how the Subaru is being restored and what visual character the owner wants it to carry. Buyers focused on strict historical authenticity should compare the tire plan against marque references, photos, and vehicle-specific documentation. For many restorations, though, staying within the correct size and period-appropriate construction is the most important starting point.

Tire construction changes more than ride feel on a restored 1973 Subaru DL; it also changes the car's visual stance and overall presentation. A 6.15-13 bias-ply tire tends to give a more traditional vintage look, while a 155R13 radial reflects the compact metric radial style that became increasingly familiar in that era.

That difference matters because the DL is a small sedan, and its tires are a noticeable part of how authentic or updated the finished car appears. The best visual result usually comes from matching tire construction to the restoration goal, then making sure the wheel size and tire proportions stay consistent with the car rather than chasing a modernized look unintentionally.

Yes. Even though the 1973 Subaru DL uses 13-inch-based fitments, changes such as aftermarket wheels, altered wheel width, suspension work, or body repairs can affect which tire setup is practical. That applies whether the car is being fitted with a 155R13 radial or a 6.15-13 bias-ply tire.

A modified car should be checked for wheel dimensions, steering clearance, and fender clearance before a tire is selected. Small cars leave less visual and physical margin than larger classics, so a setup that seems close on paper may still create problems in use. Measuring the actual wheels and inspecting the car at full steering lock helps avoid avoidable fitment surprises.

Before putting a 1973 Subaru DL back on the road with new tires, inspect the wheels, valve stems, and overall tire installation carefully. The car's brakes, steering components, wheel bearings, and suspension should also be checked, especially if the Subaru has been stored for long periods or has an uncertain maintenance history.

Tire condition alone does not make an older car road-ready. Confirm proper inflation, look for any interference during full steering travel, and make sure the car tracks and brakes normally on an initial test drive. A collector vehicle can reveal long-hidden issues once fresh tires are installed, so the first miles should be treated as a careful shakedown rather than routine driving.

Tires on a collector 1973 Subaru DL should be kept properly inflated, inspected regularly, and protected from long periods of heat, sunlight, and ozone exposure. Because many older cars are driven infrequently, tread wear is often less of a concern than age, sidewall cracking, flat spotting, and slow air loss.

Regular visual checks help catch issues before they become road-use problems. It is also wise to inspect the spare, monitor how the car sits during storage, and look over the wheels whenever the tires are rotated or removed. Even a low-mile Subaru benefits from periodic exercise, since long stationary periods can be harder on tires than steady moderate use.