The 1927 Auburn 77WW Series comes from an era when styling, touring comfort, and mechanical sophistication were becoming central selling points in the American luxury market. Auburn cars of the late 1920s appeal to collectors who want a prewar automobile that still feels substantial and roadworthy when properly prepared. Tire selection for this exact model centers on two bias-ply sizes, 30X6.00 and 6.00-18, so the first task is confirming which wheel and tire setup is on the car today. That choice affects both period-style presentation and practical fitment. For restoration-minded use, preserving the proper proportions and checking actual wheel dimensions matters before any replacement is chosen.
Which Tire Size Is Right for The 1927 Auburn 77WW Series
The 1927 Auburn 77WW Series uses two primary tire sizes, and sorting them out starts with identifying the exact wheel and tire setup currently on the car. Both are bias-ply fitments, but they use different sizing conventions, so the real decision is not just the number on the sidewall but how that size relates to the wheel, the vehicle’s proportions, and a restoration-oriented appearance.
30X6.00 is an antique diameter-by-section size, which means the first number refers to the tire’s approximate overall diameter and the second refers to its approximate section width in inches. On a 1927 Auburn 77WW Series, this is a bias-ply fitment suited to buyers preserving an early automotive sizing format and traditional visual profile. This type of size is especially relevant on prewar vehicles where appearance and proportion matter as much as basic fitment. It should be evaluated against the wheel actually on the car so the replacement matches both the setup and the character of the vehicle.
6.00-18 is a numeric bias-ply size in which 6.00 represents the nominal section width in inches and 18 identifies the wheel diameter. For the 1927 Auburn 77WW Series, it reflects a more familiar vintage bias-ply sizing system while still maintaining the construction style expected on a period vehicle. This size is useful for owners who are confirming an 18-inch wheel setup and want a tire that stays within a traditional collector-car fitment approach. Before choosing it, the wheel diameter and overall vehicle setup should be checked carefully, especially on a car that may have seen wheel changes over time.
Fitment is straightforward here because the covered sub-model uses the same two bias-ply tire sizes. Even so, checking the exact sub-model helps confirm that the car belongs to this fitment group before selecting between the two vintage sizing formats.
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1927 Auburn 77WW Series 8 Cyl.
The 1927 Auburn 77WW Series 8 Cyl. uses the same pair of bias-ply fitments associated with this model line, so the main task is confirming which wheel and tire setup remains on the car. That makes tire selection more about verifying present hardware and choosing a period-style replacement than sorting through trim-level tire differences.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Frequently Asked Questions
Common questions for the 1927 Auburn 77WW Series usually center on the two bias-ply sizes, how to interpret those older size formats, and what should be checked on a prewar car before putting it back on the road.
Tire Size & Fitment
What tire size fits a 1927 Auburn 77WW Series?
The 1927 Auburn 77WW Series uses two primary tire sizes: 30X6.00 and 6.00-18. Both are bias-ply fitments, and the covered 8 Cyl. sub-model falls within that same fitment pattern rather than using a separate modern radial size.
The important next step is confirming which of those two sizes matches the wheel and tire setup actually on the car today. Many prewar vehicles have lived long lives, so wheel changes, older restorations, or mixed replacements can leave a car wearing something different from what another owner expects.
What size rim does a 1927 Auburn 77WW Series use?
The 1927 Auburn 77WW Series uses an 18-inch rim with the 6.00-18 tire size. That size directly identifies wheel diameter in the sidewall code, which is one reason it is often easier for modern buyers to interpret than earlier antique-style sizing.
A 30X6.00 marking does not present wheel diameter in the same way, so it should not be read like a modern tire code. On a collector car of this age, the safest approach is to inspect the wheel itself and the tire already fitted before choosing a replacement based only on the sidewall number.
What does 30X6.00 mean on a 1927 Auburn 77WW Series?
30X6.00 is an antique diameter-by-section tire size. The 30 refers to the tire’s approximate overall diameter in inches, while 6.00 refers to the approximate section width, which is very different from later numeric bias-ply sizing that identifies rim diameter directly.
That matters because a 1927 Auburn 77WW Series owner may see two valid vintage size formats tied to the same vehicle family and assume they mean the same thing. They do not. Before replacing a 30X6.00 tire, confirm the actual wheel dimensions and compare the current setup carefully so the new tire matches the car’s hardware and stance.
Choosing the Right Tire
What should I consider when choosing a tire for a 1927 Auburn 77WW Series?
Start with the correct primary size for the car’s present setup, which means choosing between 30X6.00 and 6.00-18 rather than substituting a modern size by guesswork. Both are bias-ply fitments, so the decision centers on matching the wheel and preserving the proper prewar proportions.
A buyer should also think about how the Auburn will be used. A restoration-oriented car may place more importance on traditional appearance, while a regularly driven collector car still needs careful attention to wheel condition, tire age, and overall clearance before it returns to road use.
How do I choose between the available 30X6.00 and 6.00-18 tires for a 1927 Auburn 77WW Series?
Choose between 30X6.00 and 6.00-18 by confirming which size format matches the wheel and tire arrangement already on the vehicle. The two codes represent different vintage sizing systems, so the right choice depends on the actual hardware rather than on appearance alone.
After size is confirmed, compare the replacement tire’s overall presentation against the goal for the car. On a 1927 Auburn 77WW Series, preserving proper scale and period feel is often just as important as finding a tire that mounts, especially if the car is part of a long-term restoration or show-oriented collection.
How do I choose the right bias-ply tire for a 1927 Auburn 77WW Series?
The right bias-ply tire begins with the correct vintage size and the correct wheel setup. Since the 1927 Auburn 77WW Series uses bias-ply construction in both of its primary sizes, the choice is less about changing construction and more about selecting the proper fitment for the car as it sits.
Bias-ply tires are closely tied to the look and feel of prewar automobiles, so owners often choose them to maintain an authentic period-style presentation. It still helps to inspect wheel condition, confirm the tire markings already on the car, and check for adequate chassis and body clearance before committing to a replacement.
Restoration & Appearance
Which tire should I choose for a period-style 1927 Auburn 77WW Series?
A period-style 1927 Auburn 77WW Series should stay with one of its proper bias-ply sizes, either 30X6.00 or 6.00-18, depending on the wheel and tire setup on the car. That keeps the tire choice aligned with the vehicle’s prewar character instead of introducing a visibly modern format.
When originality matters beyond general period appearance, it is worth comparing the car against marque references, restoration records, or other authoritative documentation tied to that specific vehicle. Even within a correct vintage size family, the right visual result depends on matching the tire to the Auburn’s actual wheel and restoration approach.
Does correct tire fitment matter for a 1927 Auburn 77WW Series restoration?
Correct tire fitment matters a great deal on a 1927 Auburn 77WW Series because tire size strongly affects the car’s stance, visual balance, and overall prewar presentation. Using the proper bias-ply size family helps the vehicle retain the proportions expected from an automobile of this era.
Fitment also matters for practical reasons. A tire that does not match the wheel or the car’s established setup can create problems with appearance, mounting, or clearance that undermine an otherwise careful restoration. Confirming the actual wheel and existing tire markings is a smart step before any replacement is selected.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1927 Auburn 77WW Series?
Yes. Any wheel change, brake update, suspension work, or body alteration can affect tire fitment on a 1927 Auburn 77WW Series, even when the car still appears stock at first glance. That is especially important on prewar vehicles that may have passed through several restorations over many decades.
A replacement tire should be chosen only after the current wheel diameter, wheel width, and available clearance are checked on the actual car. Even a correct vintage size can become a poor match if the Auburn now wears non-original wheels or has changes that alter steering, fender, or chassis clearance.
What should I inspect before driving a 1927 Auburn 77WW Series on new tires?
Before road use, inspect the wheels, valve hardware, mounting condition, and overall tire seating, then confirm that the tires clear fenders, steering components, and suspension parts through their normal range of movement. On a collector car, the rest of the chassis deserves equal attention before any serious drive.
It also helps to look beyond the new tires themselves. Check for loose or worn steering parts, brake condition, proper inflation, and signs that an old wheel may not be true or structurally sound. A 1927 Auburn 77WW Series benefits from a careful pre-drive inspection because storage and age affect more than tread.
How should tires on a collector 1927 Auburn 77WW Series be maintained?
Tires on a collector 1927 Auburn 77WW Series should be maintained with regular pressure checks, visual inspections, and careful storage practices. Even low-mileage tires can age from time, heat, sunlight, and long stationary periods, so condition matters as much as tread depth on a prewar vehicle.
Periodic inspection should include looking for sidewall cracking, cuts, bulges, irregular wear, and slow air loss. It is also wise to keep the car stored away from prolonged moisture and ozone sources and to recheck the tires before each outing, especially when the Auburn is driven only occasionally.
