The 1929 Erskine 52 Series came from a period when independent makes and companion marques were competing hard for buyers who wanted modern styling and dependable transportation at an accessible price. For collectors today, that places the car squarely in the late-1920s touring and restoration world, where tire choice affects both appearance and road manners. The 1929 Erskine 52 Series uses bias-ply fitments, with 29X4.75 and 4.75-20 appearing within the covered fitment range. That means the real decision is not only size, but also confirming which wheel setup is on the car. For a restoration-oriented owner, checking the actual rim before choosing a tire is the most important first step.
Which Tire Size Is Right for The 1929 Erskine 52 Series
The 1929 Erskine 52 Series uses two primary tire sizes, and they are not interchangeable descriptions of the same fitment. Both are bias-ply, but they differ in sizing system and rim diameter, so the first thing to confirm is which wheel and tire setup is actually on the car. Once that is settled, the decision becomes choosing the right period-style tire for the vehicle's appearance and intended road use.
29X4.75 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 section width. On the 1929 Erskine 52 Series, this is a bias-ply fitment suited to the early automotive sizing conventions still seen in the late 1920s. Because this format is less familiar to modern buyers, it is important to read it as an older style designation rather than a modern rim-based passenger size. This size is worth evaluating carefully when the goal is maintaining an authentic prewar-era tire presentation on the correct wheel setup.
4.75-20 is a numeric bias-ply size in which 4.75 refers to the nominal section width in inches and 20 identifies the rim diameter. For the 1929 Erskine 52 Series, it represents a more familiar vintage passenger-car sizing format built around a 20-inch wheel. Numeric bias-ply sizing is often easier for collectors to recognize when confirming wheel diameter and comparing replacement options for an older car. This size should be chosen only after verifying that the car is actually equipped with the 20-inch rim setup rather than the alternate antique-format arrangement.
The covered sub-model uses two bias-ply tire sizes, so fitment is not a matter of trim differences so much as confirming the actual wheel and tire setup on the car. Checking the sub-model helps, but confirming the rim in use is what matters most before selecting a replacement tire.
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1929 Erskine 52 Series 6 Cyl.
The 1929 Erskine 52 Series 6 Cyl. can use either 29X4.75 or 4.75-20 in bias-ply construction. That makes wheel verification especially important, since the right replacement tire depends on which older sizing system and rim arrangement the car is carrying today.
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 1929 Erskine 52 Series usually need to sort out vintage tire sizing, wheel diameter, period-style bias-ply selection, and basic inspection before road use. These answers focus on the practical fitment questions that matter most on a late-1920s collector car.
Tire Size & Fitment
What tire size fits a 1929 Erskine 52 Series?
The 1929 Erskine 52 Series uses two primary bias-ply tire sizes: 29X4.75 and 4.75-20. Those are separate vintage sizing formats, not just two ways of writing the same tire, so the correct choice depends on the wheel setup actually on the car.
A replacement decision starts with confirming the rim diameter and reading the tire size on the car now. Many collector vehicles have had wheels, tires, or complete assemblies changed over the decades, so choosing by year and model alone is not enough when two primary fitments exist.
What size rim does a 1929 Erskine 52 Series use?
The covered fitments for the 1929 Erskine 52 Series include two different rim diameters tied to the two tire sizes. 29X4.75 is associated with a 5.0-inch rim diameter in this fitment range, while 4.75-20 uses a 20-inch rim.
That difference makes wheel confirmation the first step before ordering tires. On an older car, it is smart to measure or closely inspect the wheel rather than rely on assumption, especially if the vehicle has been restored, stored for years, or assembled with replacement parts at some point in its life.
What does 4.75-20 mean on a 1929 Erskine 52 Series?
4.75-20 is a numeric bias-ply size. The 4.75 refers to the tire's nominal section width in inches, and the 20 refers to the rim diameter, so this fitment is built for a 20-inch wheel on the 1929 Erskine 52 Series.
Understanding that format helps prevent confusion with older diameter-by-section markings such as 29X4.75. Before choosing a replacement, make sure the wheel on the car is truly the 20-inch setup and not an alternate assembly, since the size code and the wheel itself need to agree.
Choosing the Right Tire
What should I consider when choosing a tire for a 1929 Erskine 52 Series?
Start with the actual tire size and wheel diameter on the car, because the 1929 Erskine 52 Series uses two different primary bias-ply fitments. The main choice is not between modern styling options, but between the correct vintage size formats: 29X4.75 or 4.75-20.
After size is confirmed, think about how the car will be used. A restoration-focused owner may place the highest value on traditional appearance, while a driver should also pay close attention to tire condition, wheel condition, and whether the car has any older modifications that could affect clearance or fitment.
How do I choose between the available 29X4.75 and 4.75-20 tires for a 1929 Erskine 52 Series?
The choice between 29X4.75 and 4.75-20 is determined by the wheel setup on the car, not personal preference. Both are primary bias-ply fitments for the 1929 Erskine 52 Series, but they belong to different sizing systems and correspond to different rim arrangements.
A careful inspection of the wheel and the old tire markings will usually settle the question. Since late-1920s cars may have been updated or repaired many times, it is wise to verify the actual assembly in place before selecting a replacement meant to preserve correct proportions and safe wheel compatibility.
Why does choosing the correct vintage tire format matter on a 1929 Erskine 52 Series?
Choosing the correct vintage tire format matters because 29X4.75 and 4.75-20 communicate tire dimensions in different ways. One is an antique diameter-by-section format, while the other is a numeric bias-ply size centered on rim diameter, and mixing those up can lead to the wrong tire being selected.
On a collector car from 1929, the tire affects stance, visual balance, and basic fitment as much as road use. Matching the tire size system to the actual wheel helps preserve the car's period-style look and reduces the risk of ending up with a tire that does not suit the existing rim.
Restoration & Appearance
Which tire should I choose for a period-style 1929 Erskine 52 Series?
For a period-style 1929 Erskine 52 Series, the starting point is the correct primary bias-ply size for the wheel setup on the car, either 29X4.75 or 4.75-20. Both sizes suit the late-1920s character of the vehicle far better than treating it like a later car with modern radial sizing.
Appearance decisions on a restoration should begin with fitment accuracy, because the wrong size can change the car's proportions even before it is driven. When exact originality matters, compare the tire choice against marque references, restoration photos, and any surviving vehicle documentation tied to the specific car.
Does correct tire fitment matter for a 1929 Erskine 52 Series restoration?
Correct tire fitment matters a great deal on a 1929 Erskine 52 Series restoration because the tire is a large visual element on a late-1920s automobile. The right bias-ply size helps preserve proper stance, wheel-to-body proportion, and the traditional look expected from a car of this era.
Fitment also affects practical details such as wheel compatibility and clearance. A restoration can look complete at a glance yet still feel wrong if the tire format does not match the wheel assembly, so careful size confirmation should happen before cosmetic details take priority.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1929 Erskine 52 Series?
Yes, modifications can affect tire fitment on a 1929 Erskine 52 Series. If the car has replacement wheels, changed hubs, altered suspension height, or body repairs that shifted clearances, the correct vintage tire size still needs to be checked against the actual vehicle configuration now in service.
That is especially important on an older collector vehicle because many have been repaired or updated over several generations of ownership. A quick check of wheel diameter, wheel width, steering clearance, and fender clearance can prevent ordering a tire that suits the model in general but not the car as currently equipped.
What should I inspect before driving a 1929 Erskine 52 Series on new tires?
Before driving a 1929 Erskine 52 Series on new tires, inspect the wheels for cracks, corrosion, bent areas, and poor bead-seat condition, then confirm that the new tire size matches the wheel setup. It is also wise to check valve stems, fastener condition, and whether the tires are seated evenly.
A first road outing should include a careful look at tire pressure, steering response, and any signs of rubbing or unusual vibration. Since collector cars may have old suspension parts or long periods of storage behind them, a short local drive and reinspection is smarter than starting with a longer trip.
How should tires on a collector 1929 Erskine 52 Series be maintained?
Tires on a collector 1929 Erskine 52 Series should be inspected regularly even if the car is driven only occasionally. Watch for sidewall cracking, tread separation, cuts, bulges, uneven wear, and slow air loss, because age and storage conditions can matter as much as mileage on an older vehicle.
Good storage habits also help preserve a vintage tire's condition. Keeping the car out of prolonged sunlight, heat, moisture, and ozone sources can reduce premature aging, and periodic pressure checks are worthwhile since a collector car may sit long enough for small changes to go unnoticed.
