The 1926 Auburn 44 Series comes from an era when American cars were balancing style, road manners, and mechanical simplicity in the rapidly growing mid-1920s market. For owners of a surviving Auburn from this period, tire choice is closely tied to authenticity of look, wheel setup, and intended road use. The 1926 Auburn 44 Series uses bias-ply fitments, with 30X5.25 and 5.25-20 both associated with this model. That makes the decision less about modern tire categories and more about understanding which vintage sizing system matches the car and its wheels. A careful fitment check is especially important before putting a restoration or preserved original back on the road.
Which Tire Size Is Right for The 1926 Auburn 44 Series
The 1926 Auburn 44 Series uses two primary tire sizes, and the first step is confirming which wheel setup is actually on the car. Both fitments are bias-ply, but they use different sizing conventions and different rim diameters, so identifying the exact wheel and tire arrangement matters before comparing replacement options or planning a restoration-oriented tire choice.
30X5.25 is an antique diameter-by-section size, meaning the first number refers to the tire's approximate overall diameter and the second refers to its section width. On the 1926 Auburn 44 Series, this is a bias-ply fitment tied to an early sizing convention that looks very different from later numeric bias-ply markings. For buyers, the main value in understanding this size is confirming that the wheel and tire on the car actually correspond to this antique format rather than a later 20-inch application. That helps preserve the correct visual character while avoiding confusion between two very different fitment paths.
5.25-20 is a numeric bias-ply size in which 5.25 represents the nominal section width in inches and 20 identifies the rim diameter. On the 1926 Auburn 44 Series, this format reflects a more familiar vintage sizing style than the antique diameter-by-section marking, but it is still a period bias-ply application rather than a modern radial format. The practical reason to focus on this size is wheel confirmation, since a 20-inch rim setup leads to a completely different replacement choice than the 30X5.25 configuration. Getting that distinction right is essential for safe mounting, proper proportions, and restoration planning.
Fitment for the covered 1926 Auburn 44 Series sub-model is straightforward in one sense and exacting in another. The same sub-model is associated with both primary tire sizes, so the real task is confirming which wheel and tire setup is on the car before choosing a replacement.
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1926 Auburn 44 Series 4 Cyl.
The 1926 Auburn 44 Series 4 Cyl. is associated with both 30X5.25 and 5.25-20 bias-ply tires. That means tire selection begins with verifying the actual wheel diameter and existing tire format on the car, then choosing a replacement that matches the vehicle's present setup and restoration direction.
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
These FAQs focus on the exact tire fitment questions that matter on a 1926 Auburn 44 Series, including vintage size interpretation, wheel confirmation, restoration-oriented selection, and the checks worth making before road use.
Tire Size & Fitment
What tire size fits a 1926 Auburn 44 Series?
The 1926 Auburn 44 Series is associated with two primary bias-ply tire sizes: 30X5.25 and 5.25-20. Those are not alternate ways of writing the same size. They represent different vintage sizing systems, and they correspond to different wheel setups on the car.
The practical next step is to confirm exactly which wheels are installed before choosing a tire. Measuring wheel diameter and checking the markings on the existing tires can prevent ordering the wrong format, especially on a restored car that may have had wheels or running gear changed during its life.
What size rim does a 1926 Auburn 44 Series use?
The two fitments associated with the 1926 Auburn 44 Series use different rim diameters. The 30X5.25 size is tied to a 5.0-inch rim diameter in this application, while the 5.25-20 size uses a 20-inch rim. That difference makes wheel identification especially important.
A buyer should not assume that either tire size belongs on every surviving Auburn 44 Series without checking the car first. Vintage vehicles are often restored, updated, or mixed from period parts, so confirming the actual wheel dimensions on the vehicle is the safest way to narrow the correct replacement path.
Why does the 1926 Auburn 44 Series have more than one tire size?
The 1926 Auburn 44 Series is associated with both 30X5.25 and 5.25-20 because vintage vehicles from this era can appear with more than one period fitment convention. One uses antique diameter-by-section sizing, while the other uses a numeric bias-ply size built around a 20-inch rim.
That matters because the first decision is not brand or appearance, but verifying which wheel and tire arrangement the car actually has. On a 1920s car, the current setup may reflect restoration choices made decades ago, so the tire size should follow the installed wheels rather than assumptions about a generic model listing.
Choosing the Right Tire
What should I consider when choosing a tire for a 1926 Auburn 44 Series?
Start with the exact tire size and wheel diameter on the car, because the 1926 Auburn 44 Series is associated with both 30X5.25 and 5.25-20 bias-ply fitments. Once that is confirmed, the main considerations are staying with the correct vintage sizing format and choosing a tire that suits the car's restoration goals and intended road use.
A preservation-minded owner may focus on a traditional period presentation, while a regularly driven car may place more emphasis on condition, compatibility, and serviceability. It is also wise to inspect the existing wheels carefully, since rim condition and correct sizing matter just as much as the tire itself on an early collector vehicle.
How do I choose between the available 1926 Auburn 44 Series tire sizes?
Choosing between 30X5.25 and 5.25-20 is really a matter of identifying which setup belongs on the car in its current form. They are both bias-ply fitments, but they are not interchangeable size labels. Each one points to a different wheel arrangement and a different vintage sizing convention.
The simplest approach is to verify the wheel diameter directly and compare it with the tire currently mounted. That check is especially helpful on a restored Auburn, where the present wheel and tire combination may reflect earlier restoration decisions rather than a uniform fitment across every surviving 44 Series car.
What does 30X5.25 mean on a 1926 Auburn 44 Series?
30X5.25 is an antique diameter-by-section tire size. In that format, 30 refers to the tire's approximate overall diameter and 5.25 refers to its section width. On a 1926 Auburn 44 Series, it represents a bias-ply fitment using an early tire-marking system that predates later numeric sizes like 5.25-20.
Understanding that format helps avoid a common mistake with pre-war and 1920s cars: assuming every vintage size is centered around rim diameter in the same way. Because this marking system works differently, it is important to confirm the actual wheel and tire arrangement on the car before selecting a replacement.
Restoration & Appearance
Which tire should I choose for a period-style 1926 Auburn 44 Series?
A period-style 1926 Auburn 44 Series tire choice starts with using the correct primary fitment for the wheel setup on the car, either 30X5.25 or 5.25-20, both in bias-ply construction. That keeps the tire selection aligned with the vehicle's era and preserves the visual character expected of a mid-1920s automobile.
For a careful restoration, fitment should come before appearance details. Once the wheel diameter and size format are confirmed, the owner can choose a tire that supports the car's intended presentation, whether that means a preserved-driver look or a more historically minded restoration guided by Auburn-specific reference material.
Does correct tire fitment matter for a 1926 Auburn 44 Series restoration?
Correct tire fitment matters a great deal on a 1926 Auburn 44 Series restoration because the tire contributes heavily to the car's stance, proportions, and overall period impression. Using the proper bias-ply size for the installed wheels also helps keep the restoration mechanically consistent with the way the vehicle is set up.
A mismatch in size format or rim diameter can change both appearance and usability, even before the car turns a wheel. Owners pursuing exact historical presentation should compare the vehicle against authoritative Auburn references, while driver-focused restorations should still verify wheel dimensions and physical clearances before mounting new tires.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1926 Auburn 44 Series?
Yes. Modifications can affect tire fitment on a 1926 Auburn 44 Series, especially if the car has replacement wheels, altered suspension components, brake conversions, or body and fender work that changes clearance. On an early vehicle, even period-style changes made long ago can alter which tire size makes sense today.
That is why wheel diameter should be verified directly instead of assumed from the model name alone. Clearance around the fenders, steering movement, and the condition of the wheels themselves all deserve attention before mounting new tires, particularly when the car has a restoration history that may not be fully documented.
What should I inspect before driving a 1926 Auburn 44 Series on new tires?
Before driving a 1926 Auburn 44 Series on new tires, inspect the wheels for damage, corrosion, cracks, and proper dimensions, then confirm that the tires are mounted in the correct size for the car's actual setup. On a vintage Auburn, the condition of the wheels and chassis matters as much as the freshness of the tires.
A road-use check should also include inflation pressure, valve condition, steering clearance, brake function, and a careful look at suspension and steering components. Early collector cars often sit for long periods, so a short test drive followed by a second inspection can help catch settling, rubbing, or air loss before longer outings.
How should tires on a collector 1926 Auburn 44 Series be maintained?
Tires on a collector 1926 Auburn 44 Series should be kept properly inflated, inspected regularly for cracking, cuts, bulges, and air loss, and protected from long exposure to sunlight, heat, moisture, and ozone sources. Even a car driven only occasionally still needs routine tire checks because age and storage conditions can affect rubber over time.
It also helps to move the car periodically or store it in a way that reduces long-term flat spotting and strain on one contact patch. Before each driving season, inspect both the tires and the wheels together, since an early car's roadworthiness depends on the full wheel-and-tire assembly, not just tread condition.
