The 1928 Gardner 75 Series comes from an era when American automobiles still carried many design cues from the late brass and early classic period, and tire selection remains closely tied to that prewar character. Owners researching one today are usually balancing roadworthiness with the look and stance that suit a late-1920s luxury car. The 1928 Gardner 75 Series uses bias-ply fitments in two period-size formats, 29X5.25 and 5.25-19, so the first step is understanding which wheel setup is on the car. That choice shapes both appearance and fitment. It also makes careful wheel confirmation especially important before putting the car back into regular road use.
Which Tire Size Is Right for The 1928 Gardner 75 Series
The 1928 Gardner 75 Series uses two primary tire sizes, and the difference is not minor because the sizes correspond to different sizing conventions and different wheel diameters. Before choosing a tire, the key step is confirming the exact wheel setup on the car, since 29X5.25 and 5.25-19 are both bias-ply fitments but do not describe the same rim arrangement.
29X5.25 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 nominal section width in inches. For the 1928 Gardner 75 Series, it is a bias-ply fitment that suits the early sizing language common to late-1920s cars. This format reads very differently from later numeric bias-ply sizes, so it is important not to confuse the leading 29 with wheel diameter. Choosing this size starts with confirming that the car is actually equipped for this antique-format fitment and corresponding wheel setup.
5.25-19 is a numeric bias-ply size in which 5.25 identifies the nominal section width in inches and 19 identifies the rim diameter. On a 1928 Gardner 75 Series, this is a traditional period bias-ply fitment that uses a much more familiar wheel-diameter reference than antique diameter-by-section sizing. Its straightforward format can make wheel confirmation easier, but it still needs to match the actual wheels on the car. This size is the right one to evaluate when the Gardner is equipped with 19-inch rims and a restoration-oriented bias-ply presentation is the goal.
The covered Gardner 75 Series sub-model uses the same two primary tire sizes, so fitment is straightforward at the sub-model level. The real decision is confirming which wheel and tire-size format the car carries before selecting a replacement bias-ply tire.
1
1928 Gardner 75 Series 8 Cyl.
The 1928 Gardner 75 Series 8 Cyl. uses the same pair of bias-ply fitments found across this vehicle page, so the sub-model itself does not narrow the choice to one size. Tire selection depends on confirming whether the car is set up for the antique-format 29X5.25 size or the 19-inch 5.25-19 fitment.
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 Gardner 75 Series usually center on the difference between 29X5.25 and 5.25-19, how those sizes relate to the car's wheels, and what to inspect before a restored or seldom-driven Gardner returns to the road.
Tire Size & Fitment
What tire size fits a 1928 Gardner 75 Series?
The 1928 Gardner 75 Series uses two primary bias-ply tire sizes: 29X5.25 and 5.25-19. Those sizes are both correct fitments for this vehicle family, but they are not the same size written two different ways. They represent different sizing systems and different wheel arrangements.
The practical next step is to confirm which setup is actually on the car before choosing tires. A restored Gardner may still retain its original-style wheels, but collector cars can also be changed over time. Checking the wheel diameter and the tire markings on the car helps prevent ordering a tire that matches the period visually but not the wheel it needs to mount on.
What size rim does a 1928 Gardner 75 Series use?
Rim size depends on which tire size the 1928 Gardner 75 Series is using. The 5.25-19 size uses a 19-inch rim, while the 29X5.25 fitment corresponds to a different antique-format wheel arrangement and should not be treated as a 29-inch wheel. Both are bias-ply applications.
Wheel confirmation matters more here than it does on many later collector vehicles because the two sizes use different sizing conventions. Measuring the wheel and reading the existing tire markings are the safest starting points. That simple check avoids confusion between overall tire diameter and actual rim diameter, which is a common issue on late-1920s tire fitment.
What does 29X5.25 mean on a 1928 Gardner 75 Series?
On the 1928 Gardner 75 Series, 29X5.25 is an antique diameter-by-section tire size. The 29 refers to the tire's approximate overall diameter, and 5.25 refers to the nominal section width in inches. It is a bias-ply format used on early vehicles and does not identify the wheel diameter in the same way a size like 5.25-19 does.
That distinction is important when replacing tires on a prewar car. A buyer who assumes the first number is the rim size can end up looking at the wrong products entirely. On a Gardner, this size should be matched to the actual wheel and tire setup already on the vehicle, especially if the car has been restored or stored for many years.
Choosing the Right Tire
What should I consider when choosing a 29X5.25 or 5.25-19 tire for a 1928 Gardner 75 Series?
Start with the exact size the car uses, because 29X5.25 and 5.25-19 are both primary fitments for the 1928 Gardner 75 Series but they are not interchangeable descriptions. Both are bias-ply tires, so the key decision is less about construction type and more about matching the correct size format to the car's actual wheels.
After size is confirmed, think about how the Gardner will be used. A vehicle intended for restoration display may prioritize a traditional period-style presentation, while a touring car still needs a tire chosen with close attention to wheel compatibility and overall condition of the chassis. On a car of this age, confirming the wheel setup comes before any appearance or brand preference.
How do I choose between the available 1928 Gardner 75 Series tire sizes?
The two tire sizes for the 1928 Gardner 75 Series are chosen by wheel setup, not by personal preference alone. A Gardner equipped for 5.25-19 needs that numeric bias-ply size on a 19-inch rim, while a car set up for 29X5.25 uses the earlier antique diameter-by-section format. The right tire follows the wheel already on the car.
That makes inspection especially important on an older collector vehicle. Wheels may have been changed during a past restoration, or the car may be carrying older tires that no longer match the intended setup clearly. Comparing the wheel, the tire markings, and the vehicle's existing stance helps narrow the correct choice before moving on to appearance or road-use considerations.
What rim-fitment details matter when choosing tires for a 1928 Gardner 75 Series?
The most important rim-fitment detail is the actual wheel diameter that matches the tire size in use. On a 1928 Gardner 75 Series, 5.25-19 is tied to a 19-inch rim, while 29X5.25 belongs to an antique-format fitment where the first number describes overall tire diameter rather than wheel diameter. That difference shapes the entire selection process.
Wheel condition matters too, especially on a late-1920s automobile that may have seen long storage or older restoration work. Before mounting fresh tires, inspect the wheels for damage, corrosion, or distortion and make sure the tire size being considered matches the wheel exactly. A correct-looking bias-ply tire still needs the proper rim relationship to be a workable choice.
Restoration & Appearance
Which tire should I choose for a period-style 1928 Gardner 75 Series?
For a period-style 1928 Gardner 75 Series, the starting point is the correct primary bias-ply size already matched to the car's wheel setup, either 29X5.25 or 5.25-19. Both sizes suit the vehicle's late-1920s character far better than a modern-looking substitute outside the original fitment pattern. The correct size does most of the work in preserving the right visual impression.
Appearance decisions should come after size confirmation, not before it. On a restoration-oriented car, tire proportion and stance have a strong effect on how authentic the finished vehicle feels. If exact originality matters beyond general period style, it is worth checking marque references, restoration records, or other vehicle-specific historical sources before making the final tire choice.
Does correct tire fitment matter for a 1928 Gardner 75 Series restoration?
Correct tire fitment matters a great deal on a 1928 Gardner 75 Series restoration because the tire's profile and size format are highly visible on a car from this era. Using the proper bias-ply size, whether 29X5.25 or 5.25-19, helps preserve the vehicle's intended stance and keeps the wheel-and-tire relationship in line with late-1920s design practice.
It also affects practicality, not just appearance. An incorrectly chosen size can create mounting problems or alter the visual balance of the car even before it turns a wheel. For restoration work, tire choice should be treated as part of the overall presentation rather than a final afterthought, especially on an uncommon prewar automobile such as a Gardner.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1928 Gardner 75 Series?
Yes. Modifications can affect tire fitment on a 1928 Gardner 75 Series, especially if the car has had wheel changes, brake work, suspension alterations, or restoration-era substitutions over the years. Since this vehicle uses two different primary bias-ply sizes, even a seemingly small change to the wheel setup can determine whether 29X5.25 or 5.25-19 is the correct path.
That is why a visual check alone is not enough on an older collector car. Measuring the wheel and confirming the current setup is a better approach than assuming the car still carries its earlier configuration. Any change that affects wheel dimensions or clearance should be reviewed before mounting tires, particularly on a prewar chassis with limited standardization.
What should I inspect before driving a 1928 Gardner 75 Series on new tires?
Before driving a 1928 Gardner 75 Series on new tires, inspect the wheels for age-related damage, confirm that the mounted size matches the wheel correctly, and look over the rest of the running gear for issues that could affect how the tire carries the car. On a collector vehicle, the condition of the chassis matters nearly as much as the tire itself.
A careful walkaround should also include checking air pressure, bead seating, valve condition, and basic clearance at the fenders and steering components. A Gardner that has been stored for long periods deserves extra attention before returning to road use. Fresh bias-ply tires are only one part of making an early automobile ready for safe, steady driving.
How should tires on a collector 1928 Gardner 75 Series be maintained?
Tires on a collector 1928 Gardner 75 Series should be maintained with regular pressure checks, routine visual inspection, and careful storage habits. Even when the car is driven only occasionally, bias-ply tires still need attention for cracking, cuts, bulges, unusual wear, and signs of air loss. Low annual mileage does not stop tires from aging.
Storage conditions also matter on a prewar vehicle. Keeping the Gardner away from prolonged sunlight, heat, moisture, and ozone sources helps protect the sidewalls between drives. It is also wise to inspect the tires before every outing rather than relying on time alone, because collector cars often sit long enough for age and storage effects to become the bigger concern.
