Flint B60 Series Tires

Flint B60 Series was a short-lived late-1920s automobile from General Motors' companion-make era, built at a time when styling, engineering, and tire conventions were still moving quickly from earlier motoring practice into more standardized forms. That makes Flint B60 Series especially interesting to restore, because details that seem straightforward on later cars can still vary in meaningful ways here. Tire selection is not entirely simple, since 1927 listings include more than one size code and those antique-style numbers do not directly state the wheel diameter. The first thing to verify on any Flint B60 Series is the actual rim diameter on the car, because the available 30x5 products fit 20-inch rims.

Flint B60 Series Tire Size Guide

Flint B60 Series uses 2 distinct tire sizes across the 1927 to 1927 production span. These are antique diameter-by-section sizes, so the leading number in the code is the tire's overall outside diameter in inches, not the wheel diameter. That distinction matters on Flint B60 Series because the size code alone does not tell you the rim diameter, which must be confirmed from the tire specifications and the wheel on the car.

30X5.771927Antique diameter-by-section

30X5.77 is a 1927 Flint B60 Series size used on certain configurations within that model year. In this antique format, 30 indicates the tire's approximate outside diameter in inches and 5.77 indicates the section width, while the wheel diameter is separate and must be confirmed on the car. Choose 30X5.77 only after matching the exact wheel and application on the vehicle, and because it is a bias-ply style fitment a tube is required.

30X51927Antique diameter-by-section

30X5 is a 1927 Flint B60 Series size with available replacement products for that year. In this antique format, 30 indicates the tire's approximate outside diameter in inches and 5 indicates the section width, while the available products fit 20-inch rims rather than a 30-inch wheel. Choose 30X5 when the car is equipped for the 20-inch rim application, and because the available tires are bias ply a tube is required.

Flint B60 Series Tires by Year

The year listing breaks Flint B60 Series tire fitment down by production year so you can match the size to the specific car rather than relying on the model name alone. In 1927, more than one size is listed, so confirm the specific configuration before choosing a tire. The leading number in each size code is the tire's outside diameter, not the wheel size, which makes a wheel check especially important on Flint B60 Series.

Best Flint B60 Series Tires for Sale

Available Flint B60 Series tire products cover 2 products from 2 brands across the listed sizes. Confirm the correct size code and the actual rim diameter on the car before selecting, especially on a 1927 model with more than one listed size.

30X5 Products

These are the available products for 30X5.

Bias Ply

Hartford Airplane | 30x5

Hartford - Hartford Aero

SidewallBlackwall
Rim Diameter20 in
Rim Width—
Weight31 lb
Max Load—
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Bias Ply

Firestone 3.75 Inch Whitewall | 600-20 (30x5)

Firestone - Firestone Classic Bias Ply

SidewallWide Whitewall
Rim Diameter20 in
Rim Width3 in
Weight32 lb
Max Load1400@50 psi
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Frequently Asked Questions

The Flint B60 Series FAQ focuses on the two 1927 size listings, how antique size codes should be read, what the 20-inch rim fitment means on available 30x5 products, and how to choose tires for a careful period-minded restoration.

Size Basics & Fitment

Flint B60 Series uses two listed tire sizes for 1927: 30X5.77 and 30X5. The available replacement products in 30X5 fit 20-inch rims, which is an important distinction because antique size codes like these describe overall tire dimensions rather than directly naming the wheel diameter.

Start by checking the wheel on the actual Flint B60 Series, then compare the car's existing size markings and any surviving factory or club information. If your car is a 20-inch rim application, the listed 30X5 products are the practical place to begin; if the car carries the 30X5.77 specification, confirm that exact setup before moving ahead.

On a Flint B60 Series, 30X5 is an antique diameter-by-section size. The 30 refers to the tire's approximate overall outside diameter in inches, while the 5 refers to the section width. It does not mean the tire fits a 30-inch wheel, and the available 30X5 products are built for 20-inch rims.

That difference is where many modern buyers get turned around on pre-war and late-1920s fitments. Read the size code as a dimensional description first, then verify the rim diameter separately on the wheel itself before selecting a tire for a Flint B60 Series.

A 1927 Flint B60 Series can show both 30X5.77 and 30X5 because more than one configuration was used within that single model year. The year alone is not enough to identify the correct tire, since the size split points to a difference in wheel or application rather than a simple one-size-fits-all fitment.

Use the car's actual wheel dimensions, any surviving original tire markings, and reliable marque references to narrow it down. On a Flint B60 Series, that extra verification matters more than it does on later standardized vehicles, because antique-era size conventions can make two similar-looking numbers mean very different things in practice.

Yes, the Flint B60 Series fitments listed here are antique bias-ply applications, and the available 30X5 tires are bias-ply construction. For this style of fitment, a tube is required. That is consistent with the construction and wheel practice of the late 1920s.

Tube choice should match the tire size and the wheel condition should be checked at the same time, especially if the rims have seen decades of storage or older restoration work. On a Flint B60 Series, tube, flap, rim surface, and tire need to be treated as one system rather than separate parts.

Buying the Right Tire

Confirming the correct tire for a 1927 Flint B60 Series starts with three checks: the size marking on any old tire, the actual wheel dimensions, and the car's specific configuration. That matters because 1927 Flint B60 Series listings include both 30X5.77 and 30X5, and the available 30X5 products fit 20-inch rims.

If the car has been restored before, do not assume the current tires are correct simply because they fit the wheel. Compare what is on the car with period literature, marque-club guidance, and the wheel itself so the selected Flint B60 Series tire matches both the rim and the car's intended restoration standard.

The available Flint B60 Series 30X5 products include both blackwall and wide whitewall sidewall styles. The blackwall offering comes from Hartford, while the wide whitewall option appears in the Firestone 600-20 equivalent for the 30X5 application.

Choosing between them depends on the look you want and the period presentation of the car. A Flint B60 Series restored with an emphasis on formal late-1920s appearance may suit a whitewall presentation, while a more restrained or utilitarian look may point toward blackwall.

The currently listed Flint B60 Series products come from two brands: Hartford and Firestone. Both appear in the 30X5 fitment, giving buyers a choice between different period-style tire lines rather than a single-brand replacement path.

Brand selection on a Flint B60 Series usually comes down to restoration goals, preferred sidewall style, and the type of period presentation you want the car to carry. Once the size and rim are confirmed, compare the available series and appearance details before deciding which tire best suits the car.

The listed Flint B60 Series products include two tire series: Hartford Aero and Firestone Classic Bias Ply. Both are bias-ply offerings for the 30X5 application, but they represent different branded lines and visual presentations, including blackwall and wide whitewall availability.

For a Flint B60 Series owner, the practical difference is less about modern performance categories and more about period style, sidewall appearance, and how the finished car should present at a show or in touring use. After the fitment is confirmed, those series differences help refine the restoration rather than determine the base size.

Maintenance & Longevity

A Flint B60 Series should be stored in a cool, dry, dark space away from sunlight, electric motors, welders, furnaces, and chemicals that can accelerate rubber aging. Keep the tires clean, maintain appropriate inflation for storage, and avoid long-term parking on damp earth or oil-stained concrete.

If the car sits for extended periods, move it occasionally or support it in a way that reduces constant flat-spotting load on one section of the casing. Because Flint B60 Series uses early-style bias-ply fitments, careful storage has a noticeable effect on both appearance and service life.

Tires on a Flint B60 Series should be inspected before each drive and more thoroughly at regular intervals even if the car sees very light mileage. Look for sidewall cracking, tread separation, uneven wear, cuts, tube-related issues, and any signs that the wheel or bead area is no longer sound.

Collector cars often age their tires through time rather than miles, so a low-usage Flint B60 Series still needs consistent attention. On an antique-style fitment, it is wise to include the tubes, valve stems, and rim condition in the inspection rather than looking at tread depth alone.

A Flint B60 Series tire should be replaced when age, cracking, hardening, separation, repeated air loss, or visible structural deterioration appears, even if the tread still looks usable. On a low-mileage collector car, those age-related signs are often more important than tread wear in judging whether a tire is still serviceable.

That standard applies even more strongly to any period tire or older survivor casing kept with a Flint B60 Series for authenticity. If a tire's age or condition raises doubt, have it evaluated by a specialist in vintage tires and wheels before putting the car back into driving use.

Restoration & Authenticity

Flint B60 Series is associated here with two period size listings for 1927: 30X5.77 and 30X5. The available replacement products for 30X5 are bias-ply tires from Hartford and Firestone series, but those current offerings should be treated as restoration replacements rather than as proof of one single original factory brand or line.

For an exact original-equipment answer on a Flint B60 Series, the best reference is surviving factory literature, sales material, or knowledgeable marque-club research tied to the specific car. That approach is especially important on companion-make cars, where trim and equipment details can vary more than expected.

Yes, correct tire fitment can materially affect both presentation and judging on a Flint B60 Series. Size, sidewall style, overall stance, and whether the tire reflects the period character of the car all contribute to how authentic the restoration appears to informed viewers and marque judges.

A Flint B60 Series wearing the right diameter, section, and sidewall treatment will usually look more settled and historically believable than one fitted only for convenience. If the car is being restored for formal judging, compare your tire choice against marque-club standards and period photos before finalizing the setup.

Flint B60 Series currently has blackwall and wide whitewall choices within the listed 30X5 offerings. Either can be useful in restoration depending on how the individual car was equipped and the visual standard the owner wants to achieve, since late-1920s American cars could present differently by market position and owner taste.

If your Flint B60 Series is being restored to a precise historical specification, compare the sidewall style against period photographs, sales literature, and known surviving examples. If the goal is a handsome era-appropriate driver, the sidewall decision is often where appearance and authenticity are balanced most visibly.

Safety & Road Use

A properly fitted, properly inflated Flint B60 Series tire in sound condition can be suitable for careful public-road use, but the car remains a late-1920s machine with corresponding limits in braking, steering, suspension, and wheel design. Tire safety on a Flint B60 Series depends on the complete condition of the vehicle, not the tire alone.

Use the car conservatively and keep expectations in line with the era it comes from. Before regular road use, make sure the Flint B60 Series has had its wheels, hubs, bearings, brakes, and steering components checked to the same standard as the tires.

Before driving a Flint B60 Series, check tire inflation, visible sidewall condition, valve stems, wheel fasteners, and any sign of shifting on the rim. Also look at the age and condition of the tubes and inspect the wheel itself for rust, cracks, or distortion that could compromise an antique-style tire fitment.

A short pre-drive walkaround is especially worthwhile on a Flint B60 Series because collector cars often spend long periods parked between outings. Catching a pressure loss, rim issue, or sidewall defect in the garage is far better than discovering it once the car is already underway.

A Flint B60 Series should be driven at moderate, mechanically sympathetic speeds that respect both the car's era and the limitations of vintage-style bias-ply tires. Even with new replacement tires, the overall vehicle dynamics remain those of a 1927 automobile rather than a later high-speed platform.

Treat the Flint B60 Series as a touring, show, and pleasure-driving car rather than something to push at modern traffic pace whenever conditions allow. Smooth inputs, longer stopping distances, and a conservative cruising speed will do more for safety and tire life than any single specification on the sidewall.