1947 Buick 70 Roadmaster Tires

The 1947 Buick 70 Roadmaster uses a 700-15 tire. This is a vintage numeric bias-ply size mounted on a 15-inch rim, and it is the main fitment to look for when replacing tires on this specific Buick.

The practical question is usually not size selection, but choosing the right 700-15 version for the car. A restoration-minded Roadmaster may call for a wide whitewall presentation, while another car may be better suited to a blackwall or heavier-duty service tire. Checking the actual wheel diameter before purchase still matters, especially on cars that may have been altered decades ago.

The 1947 Buick 70 Roadmaster uses a 15-inch rim with its 700-15 tire fitment. That rim diameter is the key wheel measurement tied to the primary tire size for this car.

Rim diameter alone is not the whole story, because wheel width and the car’s current setup can affect tire choice within the same size family. Many available 700-15 products are built around a 5.00- to 5.50-inch rim width, so it is worth confirming the wheels on the car before deciding between passenger-style whitewall tires and more utility-oriented blackwall options.

Yes. The 1947 Buick 70 Roadmaster 8 Cyl. uses the same 700-15 bias-ply tire size as the main Roadmaster fitment. That keeps sub-model selection simple for this vehicle.

Even with shared sizing, buyers still need to match the tire to the car’s purpose. A Roadmaster being restored for traditional presentation may lean toward a wide whitewall bias-ply, while a car used more casually may call for a different look within the same size. It is also smart to confirm that the Buick still has its 15-inch wheels and has not been converted to another setup.

Start with the correct size and construction: 700-15 bias-ply on a 15-inch rim. From there, the main considerations are the car’s intended appearance, whether a wide whitewall or blackwall sidewall suits the build, and whether the tire is aimed at passenger-car use or heavier-duty service.

Brand and tire series also help narrow the decision. Firestone and BFGoodrich options focus on classic passenger presentation, while some STA choices lean toward transport or military-style utility. It also helps to compare rim-width compatibility, load figures where stated, and the overall visual effect on the Buick’s stance before settling on one 700-15 tire over another.

The 1947 Buick 70 Roadmaster’s 700-15 tire options include both blackwall and wide whitewall sidewall styles. That gives owners a meaningful visual choice even though the primary tire size itself stays the same.

Wide whitewalls tend to support a more formal postwar luxury-car presentation, which suits the Roadmaster’s era and proportions. Blackwalls can make more sense for a simpler appearance or for utility-focused tire series. The best choice depends on how the Buick is being finished, since sidewall treatment changes the car’s look significantly even when overall size and bias-ply construction remain unchanged.

Tires for the 1947 Buick 70 Roadmaster are available from Firestone, BFGoodrich, and STA in the 700-15 size. Those choices cover traditional passenger-car styles as well as several heavier-duty bias-ply designs.

Choosing among brands is less about ranking them and more about matching the product character to the Buick. Firestone and BFGoodrich offerings include classic-looking passenger tires, especially for buyers focused on whitewall presentation, while STA also appears in transport, traction, and military-style series. Looking at sidewall style, service type, rim-width suitability, and load details will usually narrow the field effectively.

A 700-15 bias-ply tire is the natural starting point for a period-style 1947 Buick 70 Roadmaster because it preserves the original-size format and construction family used by the car. Within that size, passenger-oriented options with traditional sidewall treatments usually align most closely with a restoration-minded presentation.

The final appearance depends heavily on whether the Buick looks right with a wide whitewall or a blackwall. Buyers pursuing exact originality should compare the car against marque references, period photography, or restoration records before choosing a specific sidewall treatment. Even when the size is straightforward, the visual character of the tire can change the finished stance and tone of the car.

On a restored 1947 Buick 70 Roadmaster, bias-ply construction plays a major role in maintaining the car’s period-style look. The shape, stance, and sidewall presentation of a 700-15 bias-ply tire complement the Roadmaster’s postwar proportions in a way that suits a traditional restoration.

Appearance is not only about construction, though, because sidewall treatment matters just as much. A wide whitewall can emphasize the Buick’s upscale postwar character, while a blackwall gives a more restrained look. Owners balancing visual authenticity with practical use should decide first how formal or utilitarian the finished car should appear, then choose the tire style that supports that goal.

Yes. A 1947 Buick 70 Roadmaster may have the correct 700-15 tire size on paper, but aftermarket wheels, changed wheel widths, suspension work, ride-height changes, or body alterations can affect how that tire actually sits on the car.

Cars from this era often pass through many owners, so it is wise to verify the actual wheel diameter and width before choosing a tire. Clearance at the fender, steering components, and suspension should also be checked if the Buick has been lowered or otherwise modified. Those steps matter even when staying with the original-style size and bias-ply construction.

Before road use, inspect the 1947 Buick 70 Roadmaster’s wheels for damage, confirm the tire beads are seated properly, and make sure inflation is set appropriately for the tires being used. It also helps to check lug hardware, valve stems, and overall clearance with the steering turned through its full range.

A long-stored collector car deserves a broader look beyond the tires alone. Worn suspension parts, loose steering components, brake issues, and wheel imbalance can all affect how the Buick feels once new tires are installed. A careful short test drive, followed by another inspection for rubbing, air loss, or irregular settling, is a smart way to confirm the setup.

Maintain 700-15 tires on a collector 1947 Buick 70 Roadmaster by checking inflation regularly, watching for sidewall cracking, cuts, bulges, or uneven wear, and keeping the car from sitting for long periods on underinflated tires. Collector vehicles often age their tires through time and storage rather than mileage alone.

Clean, dry storage away from prolonged sunlight, excess heat, and ozone sources helps preserve both blackwall and wide whitewall tires. Moving the car occasionally can also reduce flat spotting on bias-ply construction. Any Roadmaster that has spent years parked should have its tires inspected closely before highway use, even if the tread still looks serviceable at a glance.