1956 Ford Mainline Tires

A 1956 Ford Mainline uses either 670-15 or 710-15, and both are 15-inch bias-ply tire sizes. The covered fitment is not identical across every related configuration, so some Mainline-related sub-models use only 670-15 while others can use either 670-15 or 710-15.

The practical step is confirming the exact sub-model and then checking the wheels actually on the car. Many collector cars have had wheel changes over the years, so matching the replacement tire to the vehicle’s current rim width and overall setup matters just as much as knowing the nominal factory-era size.

The 1956 Ford Mainline tire sizes here are built for 15-inch rims. Both 670-15 and 710-15 share that same wheel diameter, so the size difference is in the tire’s width class rather than a change from one rim diameter to another.

Wheel diameter is only the first check. A 15-inch wheel can still vary in width, and that affects which tire size makes the most sense, especially if the car falls into a configuration that can use either 670-15 or 710-15. Verifying the wheel before ordering helps avoid an appearance or fitment mismatch.

The 1956 Ford Mainline appears with more than one primary tire size because fitment changes across the covered sub-model group. One configuration uses 670-15 only, while another is associated with both 670-15 and 710-15, so the correct choice depends on the exact vehicle configuration being matched.

That makes this less of a simple year-make-model decision and more of a sub-model and wheel-confirmation exercise. On an unrestored or long-owned car, it is also wise to compare the tires already on the car with the wheel width and stance you want, rather than assuming every 1956 Mainline should wear the same size.

For the 1956 Ford Mainline, 670-15 is a bias-ply tire size. It is the original construction style used in this fitment group and remains the primary sizing format for owners who want to keep the traditional look and general tire character associated with a mid-Fifties full-size Ford.

A radial alternative can still be considered, but that is a separate fitment choice rather than the primary construction type. Anyone moving away from 670-15 bias-ply should compare the intended radial’s wheel compatibility, overall dimensions, and clearance before making the switch, especially on a car with replacement wheels or suspension changes.

Radial equivalents for 670-15 on a 1956 Ford Mainline include 195R15 as an 80-series metric radial, P205/75R15 as a 75-series P-metric radial, P215/70R15 as a 70-series P-metric radial, and 670R15 as a bias-look radial. These give owners several radial-format paths while staying in the 15-inch wheel family.

Each option uses a different sizing convention, so the decision is not only about construction but also about tire profile and presentation. The recommended rim-width range for these equivalents is 5 to 7 inches, and the final choice should be checked against the car’s actual wheels, fender space, and steering clearance.

A bias-look radial is available for both original Mainline sizes. The 670-15 size has a 670R15 bias-look radial equivalent, and the 710-15 size has a 710R15 bias-look radial equivalent, giving owners a radial-construction option that keeps a more traditional visual presentation than many modern metric tires.

That can be appealing on a restored or period-style car, but it still needs the same care as any other size change. Wheel width, overall dimensions, and body or steering clearance should be confirmed before conversion, particularly if the Ford no longer has its original wheels or has been altered for stance.

Choosing a 670-15 tire starts with confirming that 670-15 is the correct primary size for your exact 1956 Ford Mainline configuration. After that, the real differences are construction style within the bias-ply category, brand, tire series, sidewall treatment, rim-width specification, and in some cases load capacity and weight.

Appearance usually plays a major role on a mid-Fifties Ford, so blackwall, narrow whitewall, and wide whitewall options can change the car’s overall character noticeably. It also helps to compare the wheel width already on the car, since several 670-15 products are aimed at slightly different rim-width ranges within the 15-inch fitment.

1956 Ford Mainline tires in these sizes are available in blackwall, narrow whitewall, and wide whitewall styles. Those sidewall choices appear across both 670-15 and 710-15, although the exact mix depends on the size and the tire series being considered.

Sidewall style is one of the biggest visual decisions on a car from this era. A blackwall gives a plainer, more understated presentation, while narrow and wide whitewalls move the look in a more decorative mid-Fifties direction. Matching the sidewall to the car’s trim level, restoration goal, and existing wheel covers usually brings the best result.

Tire choices for the 1956 Ford Mainline include Firestone, BFGoodrich, US Royal, Universal Vintage Tire, Goodyear, Coker Classic, Excelsior, Avon, and STA, depending on size. Brand availability is broader in 670-15 than in 710-15, but both Mainline sizes have multiple period-style options.

The better way to use brand choice here is as part of a larger comparison rather than as a ranking exercise. Once the correct size is confirmed, compare the available series, sidewall appearance, wheel-width compatibility, and any visible load information so the tire matches both the car’s look and its intended use.

A period-style 1956 Ford Mainline usually starts with the correct primary bias-ply size for the exact sub-model, either 670-15 or 710-15. From there, the strongest appearance cues come from sidewall treatment and tire series, with blackwall, narrow whitewall, and wide whitewall options all available within the proper vintage sizing format.

The right choice depends on how authentic or how personalized the finished car is meant to feel. Owners pursuing a highly specific restoration should compare tire appearance against period photos, original sales literature, marque-club guidance, and the car’s own trim details instead of assuming every whitewall style suits every 1956 Ford the same way.

Tire construction changes the look of a restored 1956 Ford Mainline as much as the size itself. A bias-ply tire preserves the traditional visual character associated with the car’s original era, while a modern radial equivalent can subtly change the tire’s proportions and overall presentation even when it stays on a 15-inch wheel.

That is why many restoration-oriented owners decide on appearance first and driving priorities second. A bias-look radial can be a useful middle ground when available, but it should still be treated as an alternative construction choice rather than the same thing as a bias-ply tire in both fit and visual effect.

Modifications can absolutely affect tire fitment on a 1956 Ford Mainline. Even when the car is using the correct nominal size, aftermarket wheels, different wheel widths, suspension changes, lowering, brake conversions, or body work can alter how a 670-15, 710-15, or radial equivalent sits and clears.

That is especially important on a collector car that has changed hands several times. Measuring the actual wheel diameter and width, then checking clearance at full steering lock and through suspension movement, is a smart step before mounting tires. It helps avoid rubbing issues and keeps the tire choice aligned with the car’s real setup.

Before driving a 1956 Ford Mainline on new tires, inspect the wheels for damage or corrosion, confirm the wheel diameter and width, and make sure the tires are mounted in the correct size for the car’s configuration. It is also wise to check valve stems, balance, inflation, and basic suspension and steering condition.

A freshly mounted tire cannot compensate for loose front-end parts or a wheel that is not suitable for the chosen size. After installation, look for even clearance around fenders and steering components, then recheck pressure and hardware after the first drive. Those steps are especially worthwhile on older cars returning to road use after storage.

Collector-car tires on a 1956 Ford Mainline should be maintained with regular pressure checks, visual inspections, and careful storage habits. Whether the car wears 670-15 or 710-15, look for cracking, bulges, cuts, uneven tread wear, or persistent air loss, especially if the car is driven only occasionally.

Storage conditions matter because long idle periods can age tires even when tread looks good. Keeping the car away from prolonged sunlight, excess heat, moisture, and ozone sources helps preserve the rubber, and periodic movement can reduce flat-spotting. Any tire that shows age-related deterioration deserves closer inspection before regular road use.