The 1926 Star 6 Cyl. comes from an era when American motorists expected a car to handle a wide range of road conditions, and tire sizing still reflected that transitional period. For today’s owner, that means fitment is less about broad modern interchange and more about understanding the exact vintage size used on the car. This model is associated with two primary bias-ply sizes, 30X4.95 and 5.00-21, and those sizes follow two very different naming conventions. The real choice is confirming which wheel setup is on the car, then deciding whether period-style appearance and traditional construction are the priority before putting the vehicle back on the road.
Which Tire Size Is Right for The 1926 Star 6 Cyl.
The 1926 Star 6 Cyl. is associated with two primary tire sizes, and the first step is confirming which wheel diameter is actually on the car. These are both bias-ply fitments, but they use different sizing systems and different rim diameters, so selecting the right tire starts with verifying the exact wheel and tire setup on your specific vehicle.
30X4.95 is an antique diameter-by-section size, meaning the first number refers to the tire’s approximate overall diameter in inches and the second refers to its nominal section width. On the 1926 Star 6 Cyl., it represents a true vintage bias-ply fitment intended for an early-era wheel setup. Buyers familiar only with later numeric sizes should note that this format does not read like a modern rim-diameter-based passenger tire size. It is the right size to evaluate only after confirming that the car is using the wheel arrangement associated with this antique sizing convention.
5.00-21 is a numeric bias-ply size in which the leading number reflects nominal section width in inches and the final number identifies a 21-inch rim. For a 1926 Star 6 Cyl., this is a more familiar vintage passenger-car format than the older diameter-by-section style, but it is still firmly an era-correct bias-ply construction. The important point is that the 21-inch rim is central to this fitment, so the tire should be matched to the wheel already on the car rather than chosen by appearance alone. This size suits owners preserving a traditional vintage tire presentation.
Fitment is straightforward at the sub-model level because the covered 1926 Star 6 Cyl. Base is associated with the same two primary bias-ply sizes for this page. The key is not trim identification so much as confirming which wheel and tire setup remains on the car today.
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1926 Star 6 Cyl. Base
The 1926 Star 6 Cyl. Base is associated with both 30X4.95 and 5.00-21 bias-ply tire fitments. That makes wheel confirmation especially important, since the buyer decision centers on identifying the actual rim and vintage sizing system in use before selecting a period-style replacement tire.
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
Owners of a 1926 Star 6 Cyl. usually need clarity on the two vintage tire sizes tied to this car, how those size formats differ, and what to inspect before choosing tires for restoration or road use.
Tire Size & Fitment
What tire size fits a 1926 Star 6 Cyl.?
The 1926 Star 6 Cyl. is associated with two primary bias-ply tire sizes: 30X4.95 and 5.00-21. Those are not interchangeable labels for the same tire. They represent different vintage sizing systems, and they also correspond to different wheel setups.
The practical next step is to confirm which wheels are actually on the car before choosing a tire. Many vehicles from this era have been repaired, restored, or altered over time, so the safest approach is to verify the existing rim diameter, read the size on the old tire if possible, and compare the overall setup before selecting a replacement.
What size rim does a 1926 Star 6 Cyl. use?
Two rim diameters are associated with the 1926 Star 6 Cyl. on this page. The 30X4.95 fitment corresponds to a 5.0-inch rim diameter, while the 5.00-21 fitment uses a 21-inch rim. That difference is substantial and has to be resolved before any tire is chosen.
A buyer should verify the actual wheel on the vehicle rather than rely on assumption or appearance. Early tire sizing can be confusing because one format emphasizes overall tire diameter while another clearly states the wheel diameter, so checking the rim itself helps prevent choosing a tire that matches the era visually but does not match the wheel.
What does 30X4.95 mean on a 1926 Star 6 Cyl.?
30X4.95 is an antique diameter-by-section tire size. In that format, the 30 refers to the tire’s approximate overall diameter in inches, and the 4.95 refers to its nominal section width. It is a bias-ply size used in an early automotive sizing system rather than a later passenger-car format.
That matters because a buyer may mistake the first number for wheel diameter, which it is not. On a 1926 Star 6 Cyl., this size should be interpreted as part of a specific vintage wheel-and-tire arrangement, so the right check is the actual rim on the car and the overall tire format, not just a quick reading of the sidewall numbers.
Choosing the Right Tire
What should I consider when choosing a tire for a 1926 Star 6 Cyl.?
Start with the exact primary size the car is using, because the 1926 Star 6 Cyl. is associated with both 30X4.95 and 5.00-21. Both are bias-ply fitments, but they use different sizing systems and different wheel diameters, so correct selection begins with confirming the wheel and the existing tire format.
After size confirmation, think about how the car will be used and how closely the tire should reflect a traditional vintage presentation. A restoration-oriented owner may want to stay close to the established period-style fitment, while a road-use owner should also pay close attention to wheel condition, tire age, clearance, and the overall condition of the chassis before installation.
How do I choose between 30X4.95 and 5.00-21 for a 1926 Star 6 Cyl.?
The choice between 30X4.95 and 5.00-21 is not a matter of preference alone. Those sizes belong to different tire-format conventions, and they correspond to different wheel diameters. A 1926 Star 6 Cyl. should use the size that matches the actual wheels and established setup on the car.
A useful approach is to inspect the current tires, measure the rim, and review any restoration records that came with the vehicle. Cars from the 1920s often pass through many owners and repair stages, so what matters most is matching the tire to the wheel and preserving proper clearance rather than trying to choose between the two sizes by appearance alone.
Why is wheel confirmation so important when selecting tires for a 1926 Star 6 Cyl.?
Wheel confirmation matters because the 1926 Star 6 Cyl. is associated with two primary bias-ply sizes that do not use the same rim diameter. The 30X4.95 fitment corresponds to a 5.0-inch rim diameter, while the 5.00-21 fitment uses a 21-inch rim, so the tire decision starts at the wheel.
That check becomes even more important on older vehicles that may have had wheel replacements or mixed components over the decades. Looking at the old tire alone is not always enough if the marking is worn or incorrect, so measuring the wheel and inspecting the full setup helps avoid mounting a tire that is correct in era but wrong for the actual rim.
Restoration & Appearance
Which tire should I choose for a period-style 1926 Star 6 Cyl.?
For a period-style 1926 Star 6 Cyl., the right starting point is the primary bias-ply size that matches the car’s actual wheel setup, either 30X4.95 or 5.00-21. Both sizes align with the vintage construction and visual character expected on a car from the mid-1920s.
Appearance should still follow fitment, not the other way around. A well-restored car can lose authenticity quickly if the tire format does not match the wheel arrangement, so buyers focused on historical presentation should confirm the existing setup and, when exact originality matters, compare that setup with marque references or restoration records tied to the individual vehicle.
Does correct tire fitment matter for a 1926 Star 6 Cyl. restoration?
Correct tire fitment matters a great deal on a 1926 Star 6 Cyl. because the tire is a major visual and functional part of the vehicle’s stance. Using the proper bias-ply size for the wheel setup helps preserve the car’s proportions and keeps the restoration aligned with the way an early touring-era automobile should present.
Fitment also affects more than looks. An incorrect size can create issues with wheel compatibility, clearance, and overall presentation, especially on an older chassis with narrow tolerances and vintage body lines. Even on a display-focused restoration, tire size should be verified carefully so the finished car looks settled and mechanically coherent rather than simply dressed in old-style rubber.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1926 Star 6 Cyl.?
Yes, modifications can affect tire fitment on a 1926 Star 6 Cyl. even when the tire size itself appears correct. Replacement wheels, altered suspension components, brake conversions, or body repairs can all change the space available for a vintage tire and alter which size or profile can be used safely.
An owner should inspect the actual wheel diameter and width, then check steering and fender clearance with the car at ride height. Early vehicles often have a long service history, so it is wise to look for non-original parts, uneven wheel placement, and signs of rubbing before mounting new tires and before assuming the current setup reflects the car’s intended arrangement.
What should I inspect before driving a 1926 Star 6 Cyl. on new tires?
Before road use, inspect the wheels, valve stems, lug hardware, and the tire installation itself to make sure the chosen size matches the rim and seats properly. A 1926 Star 6 Cyl. also benefits from a close check of steering components, suspension condition, and brake operation before any meaningful driving begins.
Collector vehicles often spend long periods parked, so new tires should be part of a broader readiness check rather than the only repair. Look for fluid leaks, loose wheel bearings, cracked suspension bushings, and any sign of interference during slow turning. Tire pressure should also be monitored closely during the first drives as the car settles back into use.
How should tires on a collector 1926 Star 6 Cyl. be maintained?
Tires on a collector 1926 Star 6 Cyl. should be maintained with regular pressure checks, visual inspections, and careful storage habits. Even when tread wear is minimal, bias-ply tires on low-use vintage cars should be examined for cracking, flat spotting, cuts, bulges, and slow air loss before the car is driven.
Storage conditions matter almost as much as mileage on a vehicle of this age. Keeping the car away from prolonged sunlight, excess heat, moisture, and ozone sources helps protect the rubber, while periodic movement can reduce stress from one fixed contact patch. A brief inspection before each outing is a good routine for any early collector car that is not driven often.
