The 1928 Graham 14 Series comes from an era when American automobiles were transitioning from purely utilitarian machines into more refined, full-bodied passenger cars with stronger brand identity. For collectors, that means tire choice affects more than ride height alone; it shapes stance, proportions, and the overall visual character of the car. The 1928 Graham 14 Series uses bias-ply fitments, with both 29X5.25 and 5.25-19 appearing on this application. That gives owners a choice between two distinctly vintage sizing conventions rather than a modern one-size-fits-all answer. Before selecting a tire, it is important to confirm which wheel setup is actually on the car and match the choice to restoration goals and intended road use.
Which Tire Size Is Right for The 1928 Graham 14 Series
The 1928 Graham 14 Series uses two primary tire sizes, and the first step is confirming which wheel and tire format the car has today. Both fitments are bias-ply, but they differ by sizing system and rim diameter, so tire selection depends on identifying the actual setup on the vehicle before comparing style, appearance, and road-use priorities.
29X5.25 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 1928 Graham 14 Series, this is a bias-ply fitment suited to an early automotive sizing convention that many modern buyers do not encounter often. Its value is largely in preserving a distinctly pre-war look and proportion on the car. This size is worth considering when the Graham still carries the wheel setup intended for this older tire format and the goal is a traditional restoration-oriented presentation.
5.25-19 is a numeric bias-ply size in which 5.25 refers to the nominal section width in inches and 19 identifies the wheel diameter. For the 1928 Graham 14 Series, it represents a more familiar vintage bias-ply format while still keeping the car within an era-appropriate construction type. This sizing style is often easier for buyers to interpret because the wheel diameter is stated directly in the size code. It should be evaluated by owners who want to stay with a traditional bias-ply tire after confirming that the car uses 19-inch wheels.
Sub-model fitment is straightforward here because the covered Graham 14 Series configuration uses the same two primary tire sizes. Even so, checking the exact sub-model and the wheels currently on the car remains important because the two sizes use different sizing conventions and different rim diameters.
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1928 Graham 14 Series 6 Cyl.
The 1928 Graham 14 Series 6 Cyl. can use either of the two bias-ply fitments associated with this application. That makes wheel confirmation especially important, since the real choice is not between modern and vintage sizing, but between two period tire formats that suit different wheel setups.
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 1928 Graham 14 Series usually center on identifying the correct tire size, understanding these early bias-ply formats, and checking wheel fitment before putting a collector car back on the road.
Tire Size & Fitment
What tire size fits a 1928 Graham 14 Series?
The 1928 Graham 14 Series uses two primary bias-ply tire sizes: 29X5.25 and 5.25-19. Those are not interchangeable descriptions of the same thing; they represent two different vintage size formats, and they correspond to different wheel setups on the car.
The most important next step is confirming what wheels are actually on the vehicle now. A restored or long-owned collector car may not still have its original wheel configuration, so the correct tire choice depends on matching the tire size to the wheel diameter and the overall setup already installed.
What size rim does a 1928 Graham 14 Series use?
The two tire fitments associated with the 1928 Graham 14 Series point to two different rim diameters. The 29X5.25 fitment is associated with a 5.0-inch rim diameter, while the 5.25-19 fitment uses a 19-inch rim.
That difference makes wheel confirmation the key fitment check before selecting tires. On an early car like this Graham, the tire code alone does not tell the full story unless it is matched to the actual wheel on the car, so measuring and verifying the wheel setup should come before any purchase decision.
What does 29X5.25 mean on a 1928 Graham 14 Series?
29X5.25 is an antique diameter-by-section tire size. In that format, 29 refers to the tire's approximate overall diameter and 5.25 refers to the tire's section width, rather than naming the wheel diameter in the same way a later numeric bias-ply size would.
That matters because early size systems can be confusing when compared with modern tire labels. On a 1928 Graham 14 Series, 29X5.25 should be treated as a distinct vintage fitment that needs to match the car's actual wheel setup, overall proportions, and restoration direction rather than being compared loosely with later 19-inch numeric sizes.
Choosing the Right Tire
What should I consider when choosing a tire for a 1928 Graham 14 Series?
Start with the correct primary size for the wheel setup on the car, since the 1928 Graham 14 Series uses either 29X5.25 or 5.25-19 and both are bias-ply fitments. Choosing between them is a wheel-and-format decision first, not simply a matter of picking whichever vintage size looks close.
After size is confirmed, think about how the car will be used and presented. A restoration-oriented car may benefit from the tire format that best preserves its period stance, while a driver should also be checked for wheel condition, clearance, and general compatibility before any new bias-ply tire is installed.
How do I choose between 29X5.25 and 5.25-19 for a 1928 Graham 14 Series?
The choice depends on the wheel setup currently on the car. 29X5.25 is an antique diameter-by-section fitment, while 5.25-19 is a numeric bias-ply size tied to a 19-inch rim, so the correct tire is the one that matches the vehicle's actual wheels.
A useful way to approach the decision is to treat appearance and fitment separately. First verify the wheel diameter and the tire format the car is set up to accept, then decide which option better supports your goals for authenticity of presentation, ride use, and the overall look of the restored Graham.
Why does the 1928 Graham 14 Series have more than one tire size?
More than one tire size appears on the 1928 Graham 14 Series because this application is associated with two different vintage fitment formats: 29X5.25 and 5.25-19. Both are bias-ply tires, but they do not describe the tire in the same way and they are tied to different rim diameters.
For an owner, that means the vehicle should not be treated like a modern car with one universal replacement size. Early collector vehicles often require extra verification because wheels may have been changed over time, and the right answer comes from matching the tire format to the car's actual hardware rather than relying on appearance alone.
Restoration & Appearance
Which tire should I choose for a period-style 1928 Graham 14 Series?
A period-style 1928 Graham 14 Series should stay with the bias-ply construction used by this application and then be matched to the correct primary size for the car's wheel setup. That means choosing between 29X5.25 and 5.25-19 only after confirming which wheel and tire format the car actually uses.
For many restorations, the more important question is how the tire supports the car's proportions and era-appropriate presentation. If exact originality matters beyond general period style, compare the tire choice against marque references, surviving vehicle evidence, and other historical documentation specific to the individual Graham being restored.
Does correct tire fitment matter for a 1928 Graham 14 Series restoration?
Correct tire fitment matters a great deal on a 1928 Graham 14 Series because tire diameter, width, and construction have a strong effect on the car's stance and visual balance. Using the proper vintage bias-ply format also helps maintain the right look for a vehicle from the late 1920s.
Fitment is equally important from a practical standpoint. A tire that does not match the wheel setup can create avoidable problems with mounting, proportions, and road use, so restoration planning should include checking the existing wheels carefully and confirming the exact tire format before the car returns to service.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1928 Graham 14 Series?
Yes, modifications can affect tire fitment on a 1928 Graham 14 Series. If the car has replacement wheels, brake changes, altered ride height, or body and fender work done over the years, those changes can alter which of the two primary bias-ply sizes is appropriate.
Even small changes matter on an early collector vehicle because tire clearances and wheel dimensions are less forgiving than many owners expect. A modified Graham should have its wheel diameter, wheel width, mounting condition, and available clearance checked carefully before selecting either 29X5.25 or 5.25-19.
What should I inspect before driving a 1928 Graham 14 Series on new tires?
Before driving a 1928 Graham 14 Series on new tires, inspect the wheels for damage, rust, cracks, and mounting condition, and make sure the chosen tire size matches the wheel setup on the car. The rest of the suspension and steering should also be in sound operating condition.
Tire condition checks should continue once the car is on the road. Watch for air loss, sidewall damage, cuts, bulges, and any signs of rubbing or uneven wear, and keep inflation at the level appropriate for the tire and vehicle setup so the Graham remains safe and predictable in use.
How should tires on a collector 1928 Graham 14 Series be maintained?
Tires on a collector 1928 Graham 14 Series should be inspected regularly even if the car is driven only occasionally. Bias-ply tires on low-mileage vintage vehicles can age out before they wear out, so sidewalls, tread surfaces, and air retention deserve routine attention.
Storage conditions matter almost as much as road use. Keeping the car away from prolonged sunlight, moisture, heat, and ozone sources can help preserve tire condition, and a Graham that spends long periods parked should be checked carefully before each outing for flat spotting, cracking, and pressure loss.
