1927 Rickenbacker Tire Fitment Guide

1927 Rickenbacker vehicles used four tire sizes across three model lines: 30X5.77 and 30x5 for the 70 Series and 80 Series, and 33X6.00 and 600-21 for the 90 Series. The 90 Series sizes share a 21-inch rim diameter, and the available 600-21 products fit 3.00- to 3.75-inch rim widths where that specification is listed. The 70 Series and 80 Series do not use the same wheel fitment as the 90 Series, so the lineup is not interchangeable year-wide.

That means a 1927 Rickenbacker owner should identify the series before doing anything else, then confirm the actual wheel on the car. Cars restored long ago sometimes carry replacement wheels or later-service tires, so the sidewall size currently fitted is worth comparing against the wheel itself. If you own a 90 Series, 600-21 gives you a clearly available replacement path; if you own a 70 or 80 Series, the antique-format size on the wheel is the key detail to verify first.

On a 1927 Rickenbacker, 30X5.77 is an antique diameter-by-section size. The first number, 30, is the tire's overall outside diameter in inches, and 5.77 is the nominal section width in inches. That differs from later numeric sizing because the leading number is not the rim diameter. This size is a bias-ply fitment used on 70 Series and 80 Series cars.

Understanding that older sizing convention matters because a modern buyer might assume the first number relates to the wheel, when it actually describes the tire's full mounted height. The practical takeaway is that 30X5.77 should be matched to the correct antique wheel rather than treated as interchangeable with another 30-inch tire. For a 1927 Rickenbacker restoration, that distinction helps preserve the proper stance and keeps you from ordering around the wrong dimension.

For a 1927 Rickenbacker, 600-21 is a numeric bias-ply size in which 6.00 identifies the nominal section width and 21 identifies the rim diameter in inches. It is not an antique overall-diameter format like 33X6.00 or 30X5.77. On the 1927 Rickenbacker lineup, 600-21 belongs to the 90 Series and is the size with currently listed Lester and BFGoodrich product options.

That makes 600-21 easier for many buyers to work with because the wheel diameter is stated directly in the size code. It also gives 90 Series owners useful appearance choices, including blackwall and wide whitewall versions, without changing away from the same basic size family. If your 1927 Rickenbacker 90 Series currently wears a 21-inch wheel, 600-21 is the size to compare first before looking deeper at sidewall style and brand preference.

No, 1927 Rickenbacker models do not all use the same tire size. The 70 Series and 80 Series share 30X5.77 and 30x5, while the 90 Series uses 33X6.00 and 600-21. The split is significant because the 90 Series sizes are built around 21-inch rims, which puts them in a different fitment group from the smaller-series cars.

That difference means identifying a 1927 Rickenbacker by year alone is not enough when choosing tires. A buyer comparing a 70 Series to a 90 Series may see both as late-1920s Rickenbackers, but the tire path changes once the exact series is known. When the wheel or tire history of the car is uncertain, start at the series level and then verify what is physically mounted before moving on to sidewall style or brand selection.

For 1927 Rickenbacker vehicles, the currently listed 600-21 products for the 90 Series are available in both Blackwall and Wide Whitewall styles. Lester offers a blackwall version, while BFGoodrich offers both blackwall and a 3.50-inch wide whitewall. All of those listed choices are bias-ply, which stays consistent with what a late-1920s Rickenbacker owner would expect in period construction.

Sidewall style affects the car's visual character more than its basic fitment. A blackwall usually gives a more restrained, utilitarian look, while a wide whitewall can suit a more formal presentation on an upscale late-1920s automobile. For a 1927 Rickenbacker used in judged events, size, construction, and sidewall appearance should all align with the way the car is being restored, and marque-specific judging standards are worth checking before finalizing that cosmetic choice.

The listed 1927 Rickenbacker tire offerings in 600-21 come from Lester and BFGoodrich. Lester appears in a blackwall bias-ply version, while BFGoodrich appears in both blackwall and wide whitewall bias-ply forms. Those brands are associated only with the 600-21 size here, which means they apply directly to 1927 Rickenbacker 90 Series cars using that size.

Brand choice on a 1927 Rickenbacker usually comes after the more important decisions of series identification and size confirmation. Once the size is right, the brand can shape details such as visual style and how closely the tire aligns with the look you want for the car. A 90 Series owner has a straightforward comparison available, while 70 Series and 80 Series owners should first establish the exact antique-format size mounted on their wheels.

For a 1927 Rickenbacker using 600-21, Lester is offered as a blackwall bias-ply tire weighing 20 pounds. BFGoodrich offers two bias-ply 600-21 versions: a blackwall at 31 pounds and a 3.50-inch wide whitewall at 34 pounds, with both BFGoodrich versions listing a 3.00- to 3.75-inch rim-width range and a maximum load figure of 1350 pounds at 36 psi. The most obvious distinctions are sidewall appearance, stated weight, and the additional rim-width and load information on the BFGoodrich options.

That comparison helps a 1927 Rickenbacker 90 Series owner narrow choices by presentation and specification rather than by size alone, since all three are 600-21 bias-ply tires. A buyer looking for a blackwall can compare Lester against BFGoodrich directly, while someone aiming for a more formal late-1920s look may prefer the wide whitewall. Matching the tire to the wheel width already on the car remains an important final check before making the selection.

For 1927 Rickenbacker vehicles, the listed rim-width specification appears on the 600-21 size used by the 90 Series, where BFGoodrich products fit 3.00- to 3.75-inch rims. The same 600-21 products mount on 21-inch wheels. The other 1927 Rickenbacker sizes on the 70 Series, 80 Series, and 90 Series are identified by size and construction, but the currently listed product specifications do not add more rim-width figures for those sizes here.

That makes rim measurement especially worthwhile on any 1927 Rickenbacker that has been restored, re-wheeled, or stored for decades. If your car is a 90 Series on 600-21 tires, the 3.00- to 3.75-inch range gives a clear target to compare against the wheel before choosing a product. On 70 and 80 Series cars, confirm the exact antique size and the wheel itself together rather than assuming one vintage 30-inch tire family uses the same rim profile as another.

The listed 1927 Rickenbacker 600-21 products do not carry TT or TL markings in the size description, so the product line does not present a mixed tube-versus-tubeless split within that size. On a car from 1927 using bias-ply vintage-style fitments, tube use is commonly part of the wheel and tire system, especially on original-style artillery or demountable-era wheel designs. The key point is to match the tire setup to the wheel construction actually on your 1927 Rickenbacker.

A practical approach is to inspect the wheel before replacing the tires instead of assuming every 21-inch vintage wheel is configured the same way. If the car retains original-style hardware, the tube, flap, and valve-stem arrangement deserve as much attention as the tire itself. That is especially true on a collector car that may have sat for long periods, because an aged tube or stem can become the weak link even when the tire casing still looks presentable.

Original 1927 Rickenbacker wheels cannot be treated as universal across all four sizes used that year. The 90 Series sizes, 33X6.00 and 600-21, are built around 21-inch rims, while the 70 Series and 80 Series use different antique-format fitments. Within the 90 Series, 33X6.00 and 600-21 align around the same 21-inch wheel diameter, but that does not make them interchangeable with the 70 Series or 80 Series wheel setup.

The safest way to think about a 1927 Rickenbacker is by series first, wheel second, and tire third. If you own a 90 Series, confirming a correct 21-inch wheel is the starting point before narrowing to a specific product. If you own a 70 or 80 Series, focus on the exact antique-format size already fitted to the wheel, because the older diameter-by-section system can look deceptively similar while actually calling for a different wheel.

A 1927 Rickenbacker should be stored in a cool, dry space away from direct sunlight, electric motors, welders, battery chargers, and other ozone-producing equipment that can age rubber. Keep the tires clean, maintain proper inflation, and move the car occasionally so the same section of bias-ply casing is not loaded in one spot for months at a time. If the car will sit for an extended period, stands placed correctly under the chassis can reduce sustained load on the tires.

Bias-ply collector tires are especially prone to flat-spotting when left parked too long, and that effect can be more noticeable on a large late-1920s car. A simple storage routine pays off when the car comes back into use, because it helps preserve ride quality and sidewall appearance. Owners who maintain a spare should treat it the same way, since a neglected spare often becomes unusable at the exact moment it is finally needed.

Tires on a 1927 Rickenbacker should be judged by age and condition more than by mileage, because collector cars often cover very few miles each year. A sensible rule is to begin evaluating them closely around five to seven years of age and to treat around ten years as the point where replacement deserves serious consideration, even if tread remains. The DOT-style age-code habit from modern tire service still helps as a general dating principle whenever the tire carries a comparable date reference.

That approach is more useful than waiting for visible wear bars on a vintage car that spends much of its life parked. Rubber hardens over time, cords and inner components age, and a tire that looks good from ten feet away may still be past its best service life. On a 1927 Rickenbacker, replacing aged tires before they force the issue is part of preserving the car, not just preparing it for driving.

Tires on a 1927 Rickenbacker should be inspected before every drive and again before any longer outing or touring event. Look for sidewall cracking, weather checking, cuts, bulges, uneven tread wear, and any sign that the tire is losing pressure between uses. On an older wheel-and-tire system, the valve stem and any tube-related hardware deserve the same attention, because air loss may begin there rather than in the tread or sidewall.

Frequent inspection matters on a pre-war car because months can pass between drives, and age-related issues often show up before mileage-related ones do. Catching a crack, separation, or stem problem early is far easier than dealing with a roadside failure on a large vintage automobile. A quick walk-around with an accurate pressure gauge and a close visual check should become part of the routine every time the 1927 Rickenbacker leaves the garage.

A 1927 Rickenbacker 70 Series would originally have used bias-ply tires, because that was standard practice in the pre-war era. Within the 1927 Rickenbacker range, the 70 Series is associated with 30X5.77 and 30x5, both antique-format bias-ply sizes. The exact tire fitted when new could vary with wheel equipment, body style, and period service history, so the correct path is to start with the tire size tied to the wheel currently on the car.

For restoration work, that means verifying whether your 70 Series carries the wheel intended for 30X5.77 or for 30x5 before treating either size as the automatic answer. Originality-minded owners should also consider how the tire's overall look supports the era, since late-1920s fitment was as much about stance and proportion as it was about simple dimensions. Marque clubs, factory literature, and period photos can help resolve body- or market-specific details when a car's history is mixed.

Correct tire fitment absolutely matters when showing a 1927 Rickenbacker, especially in events that emphasize authenticity. Judges and experienced enthusiasts often notice whether the size, construction type, and sidewall presentation look right for the year and series. On a pre-war car, an obviously later-size convention, the wrong overall visual proportion, or a sidewall style that does not suit the restoration theme can stand out even if the tire physically fits the wheel.

That does not mean every event applies the same standard, but it does mean a 1927 Rickenbacker owner should match tire choices to the intended use of the car. A touring car restored for driving may accept a different visual compromise than a car built for strict concours judging. Before finalizing a set, compare your planned size and sidewall style against event rules, period photos, and marque-club advice so the tire supports the story your restoration is trying to tell.

On a 1927 Rickenbacker, the listed 600-21 offerings for the 90 Series are available as both blackwall and wide whitewall bias-ply tires. The blackwall versions come from Lester and BFGoodrich, while BFGoodrich also offers a 3.50-inch wide whitewall in the same size. The construction stays period-appropriate either way, so the difference is primarily one of visual presentation rather than a change in basic tire type.

That visual choice can have a strong effect on how a 1927 Rickenbacker reads at first glance. Blackwalls usually give a more restrained and practical look, while wide whitewalls can emphasize the elegance and presence expected of an upscale late-1920s car. If authenticity is the goal, review period photos of similar Rickenbackers and any show guidelines that apply to your car, because sidewall appearance often shapes the final impression as much as paint or trim.

1927 Rickenbacker tires can be suitable for road use when they are the correct size, in good condition, properly inflated, and matched to a mechanically sound car. The currently listed 600-21 products for the 90 Series do not show modern speed-letter ratings, which is common on vintage-style bias-ply tires intended for collector vehicles rather than late-model performance use. On a car from 1927, braking, steering, suspension condition, and overall chassis health are often just as important to safe travel as the tire itself.

The practical implication is that highway use should be approached with the car's age and design in mind. A well-prepared 1927 Rickenbacker can be enjoyable on secondary roads and moderate touring speeds, but it should not be treated like a modern sedan simply because reproduction tires are new. Before any sustained road trip, make sure the entire car is sorted, and drive within the limits of the vehicle as a complete pre-war machine, not just the tire casing.

Inflation pressure on a 1927 Rickenbacker should follow the factory guidance for the car and the tire maker's published limits for the specific size you are using. Within the listed 600-21 options for the 90 Series, BFGoodrich gives a maximum load figure of 1350 pounds at 36 psi. That number is a tire rating point, not an instruction to apply the same pressure to every 1927 Rickenbacker tire or every wheel configuration in the lineup.

The best practice is to treat vehicle recommendation and tire rating as two separate pieces of information that work together. Use the car's original literature, a trusted marque reference, or a knowledgeable specialist to establish the operating pressure target for your series, then make sure it stays within the tire's stated capability. Avoid borrowing pressures from another size, because a 70 Series antique-format tire and a 90 Series 600-21 tire are not the same fitment problem.

Before a longer drive in a 1927 Rickenbacker, inspect each tire for cracking, cuts, bulges, exposed cords, irregular wear, and steady pressure retention. Check the valve stems and, where applicable, any tube-related components, and make sure the spare is usable rather than simply present. On a 90 Series running 600-21 tires, confirm that the sidewall style and tire condition match across the car so handling and appearance stay consistent from corner to corner.

Tire condition is only one part of the checklist on a car from this era, but it is the part that literally carries every other system down the road. A long outing is easier and safer when the tires, wheels, brakes, steering, and cooling system are all reviewed together before departure. Giving the 1927 Rickenbacker a careful pre-drive inspection also helps you catch small age-related issues in the garage instead of discovering them miles from home.