Studebaker Power Hawk & Commander Tires

Studebaker Power Hawk & Commander uses 670-15 tires for the 1956 model year covered here. All listed products for that application are built for 15-inch rims, and most of the available options fall within a recommended rim-width range centered around 4.50 to 5.00 inches, with some extending to 5.00 to 6.00 inches. The available choices are all bias-ply designs, offered in blackwall, narrow whitewall, and wide whitewall styles.

That means the key fitment checks are straightforward but important: verify that your wheels are still 15-inch wheels, and measure or confirm wheel width before settling on a particular tire. Many restored cars have had wheels changed over the years, so it is wise to inspect the actual wheels on the car rather than relying only on memory or appearance.

On Studebaker Power Hawk & Commander, 670-15 is a traditional numeric bias-ply size. The 670 portion indicates a nominal section width of about 6.70 inches, while the 15 identifies the wheel diameter in inches. It is an older sizing system used widely on American cars of the period, and it differs from later metric sizes that include an aspect ratio and radial construction marking.

For an owner or restorer, that matters because a modern-looking size code is not the right reference for this application. If your car is being restored to a factory-era appearance, 670-15 keeps the proper visual scale, and the final decision usually comes down to sidewall style, brand preference, and whether your specific wheel width aligns with the tire’s recommended range.

Studebaker Power Hawk & Commander is listed here with bias-ply tires in a traditional numeric size, and a tube is required. The available products for 670-15 are all bias-ply constructions, which is consistent with period-correct fitment for a 1956 American passenger car of this type. Tube use is part of the normal installation approach for these tires.

When the tires are mounted, the tube should match the tire size and be installed carefully on wheels that are clean and in sound condition. On a collector car, proper tube installation matters just as much as the tire choice itself, because pinched tubes, rough wheel surfaces, or mismatched components can create problems even when the outer tire is correct.

Studebaker Power Hawk & Commander tires are available here in blackwall, narrow whitewall, and wide whitewall forms within the 670-15 size. The product range includes plain blackwalls for a more restrained look, 1-inch narrow whitewalls, and several wider whitewall variations in period-style widths. That gives owners room to match the car’s trim level, restoration theme, or personal visual preference without changing the basic fitment.

For a more original mid-1950s appearance, whitewalls are often the visual detail owners pay attention to first, but blackwalls can also suit a more understated presentation. The best approach is to compare the tire against period photos, showroom literature, or the car’s restoration goal so the sidewall style complements the Studebaker Power Hawk & Commander rather than overpowering it.

Studebaker Power Hawk & Commander tires in 670-15 are offered by Firestone, US Royal, Coker Classic, Universal Vintage Tire, BFGoodrich, Excelsior, Goodyear, Avon, and STA. Those products span several classic bias-ply series, including Firestone Classic Bias Ply, US Royal Classic Bias Ply, Silvertown Classic Bias Ply, Universal Classic Bias Ply, Excelsior Bias Ply, Turbospeed Mk4, Super Cushion, Custom Super Cushion, Super Cushion Deluxe, and Super Transport.

Brand choice is usually less about basic fitment, since they share the same size, and more about appearance, era character, and how you plan to use the car. Some owners focus on a period-correct sidewall and tread presentation, while others may choose a heavier-duty commercial-style option if the Studebaker Power Hawk & Commander is used differently from a show-oriented restoration.

Studebaker Power Hawk & Commander is offered in several tire series within 670-15, including Firestone Classic Bias Ply, US Royal Classic Bias Ply, Silvertown Classic Bias Ply, Universal Classic Bias Ply, Excelsior Bias Ply, Goodyear Super Cushion, Goodyear Custom Super Cushion, Goodyear Super Cushion Deluxe, Avon Turbospeed Mk4, and STA Super Transport. These series differ mainly in brand identity, tread and sidewall presentation, and intended character, rather than basic size fitment.

For most restorations, the decision comes down to how authentic or era-specific you want the car to look when parked beside others from the same period. If the car is judged, shown, or restored with close attention to period detail, compare the series name, sidewall treatment, and overall visual profile to period references before making the final selection.

A 1956 Studebaker Power Hawk & Commander covered here uses 670-15 tires on 15-inch wheels. Since the size itself is straightforward, the real confirmation points are the wheel diameter and the wheel width, because different products within the same 670-15 size can specify slightly different recommended rim-width ranges. The listed range is commonly centered around 4.50 to 5.00 inches, though some products accept other widths.

Start by reading the size on the existing tire if the car already has period-style rubber, then compare that with the wheel dimensions on the car itself. If the wheels have been changed during restoration or past ownership, measure them directly and compare them to original paperwork, service literature, or a Studebaker marque source before choosing among the available 670-15 options.

Studebaker Power Hawk & Commander should be stored in a cool, dry, dark space with the tires kept away from sunlight, ozone sources, solvents, and large temperature swings. Bias-ply collector tires benefit from clean floors, proper inflation, and long periods without concentrated weight on one contact patch. If the car sits for extended stretches, occasional repositioning helps reduce flat spotting and casing stress.

Practical storage care protects both appearance and service life. Keep the car on a level surface, maintain inflation consistently, and avoid parking for months at a time on underinflated tires. If the car is stored seasonally, many collectors also inspect the sidewalls before and after storage so any cracking, deformation, or tube-related issues are caught before the next drive.

Tires on a Studebaker Power Hawk & Commander should be inspected before regular road use and again after the car has been sitting for an extended period. On a collector car with bias-ply tires, the inspection should cover inflation, tread condition, sidewall cracking, age-related hardening, uneven wear, and valve-stem or tube concerns. A quick visual check is helpful, but a periodic hands-on inspection is much better.

That routine matters because collector cars often age their tires by time rather than mileage. A Studebaker Power Hawk & Commander that only drives to events can still develop tire issues between outings, especially if storage conditions are not ideal. Making inspection part of every pre-drive routine is one of the simplest ways to protect both the car and its occupants.

Tires on a Studebaker Power Hawk & Commander should be replaced when age, cracking, hardening, vibration, repeated air loss, or structural concerns appear, even if the tread still looks usable. Collector-car tires are often retired because the rubber and casing have aged out, not because the tread is worn away. Bias-ply tires can also lose confidence-inspiring road manners well before they look visibly worn to a casual observer.

The right time to replace them is before they become a question mark on the road. If the car has spent years in storage, or if you do not know the age and service history of the mounted tires and tubes, have them evaluated by a professional familiar with vintage tires. That is especially important before any longer drive at modern traffic speeds.

Studebaker Power Hawk & Commander is covered here with 670-15 sizing and period-style bias-ply construction, which aligns with the era and character of the car. Within that size, multiple series are available, including classic bias-ply offerings from Firestone, US Royal, BFGoodrich, Universal Vintage Tire, Excelsior, and Goodyear. That means the size and construction are the primary authenticity anchors, while brand and sidewall presentation can vary within a correct period look.

For a strict restoration, the most accurate path is to compare the car against original paperwork, sales literature, and Studebaker club guidance for the exact trim and presentation you want to achieve. Once the size and construction are confirmed, details such as blackwall versus whitewall and the width of the whitewall become the finishing touches that shape how authentic the car appears.

Correct tire fitment can absolutely affect how a Studebaker Power Hawk & Commander is judged and how seriously a restoration is taken. Judges and knowledgeable collectors notice whether the tire size is appropriate, whether the sidewall treatment suits the period, and whether the overall stance looks right for the car. A correct 670-15 bias-ply presentation supports the visual proportions expected of a 1956 Studebaker.

From a value standpoint, tires are part of the car’s first impression. A mismatched sidewall style or an obviously modern substitute can distract from otherwise excellent restoration work, while a well-chosen period-style tire reinforces authenticity. If show judging matters, consult Studebaker judging standards or marque-club references before choosing between blackwall, narrow whitewall, and wide whitewall options.

Studebaker Power Hawk & Commander tires are available in blackwall, narrow whitewall, and wide whitewall styles, and each can change the restored car’s character significantly. Blackwalls give a simpler, more understated appearance, while narrow and wide whitewalls move the presentation toward the brighter, more visibly styled mid-1950s look. The correct choice depends on how the specific car was equipped and how faithfully the restoration follows period presentation.

For an owner aiming at authenticity, sidewall style should be chosen with the same care as paint trim or wheel covers. Period photos, brochures, and marque-club input are the best way to settle whether a restrained blackwall or a more prominent whitewall best suits your Studebaker Power Hawk & Commander. The size remains the same, but the visual impact is very different.

Studebaker Power Hawk & Commander can be driven on public roads with correctly fitted, properly installed, and well-maintained 670-15 bias-ply tires, but they should be approached as vintage-style tires rather than modern high-speed radials. Their construction, handling feel, and braking behavior reflect the period for which they were built. The car’s suspension, steering, and brake condition are just as important to road safety as the tires themselves.

In practical terms, that means driving the car with more mechanical sympathy and more margin than you would use in a modern vehicle. Keep speeds sensible, allow extra following distance, and make sure the full chassis is inspected if the Studebaker Power Hawk & Commander has been dormant or recently returned to service after restoration.

Before driving a Studebaker Power Hawk & Commander, check tire inflation, visible sidewall condition, tread condition, valve stems, and any signs of age-related cracking or deformation. On a bias-ply setup with tubes, it is also wise to watch for slow leaks or a tire that has settled unevenly after storage. Since this car uses 15-inch tires in a traditional numeric size, wheel condition and correct mounting matter as much as the tire itself.

A brief walkaround before every outing can prevent many common collector-car problems. If the car pulls, vibrates, or feels unsettled once underway, stop and inspect it rather than assuming it will clear up with use. A Studebaker Power Hawk & Commander that has been sitting should always get a more thorough check before returning to normal road driving.

A sensible speed for a Studebaker Power Hawk & Commander on period-style bias-ply tires is one that respects the limits of a mid-1950s chassis, the age and condition of the complete running gear, and the handling traits of bias-ply construction. Even with new vintage-style tires, the car will not react like a modern radial-equipped sedan. Stability, braking distance, and steering response all deserve more margin than modern traffic often assumes.

The practical takeaway is to drive the Studebaker Power Hawk & Commander conservatively, especially on crowned roads, in crosswinds, or after long storage. Build speed gradually, evaluate how the car feels, and avoid treating originality-style tires as an invitation to run modern highway pace without considering the condition of the tires, tubes, wheels, steering, and suspension as a complete system.