The 1927 Whippet 93A comes from the lively interwar period when smaller American cars were gaining real popularity with buyers who wanted modern style and practical transportation. That makes tire choice especially important today, because this is the kind of vehicle where correct proportions and construction have a big effect on both stance and road manners. The 1927 Whippet 93A uses bias-ply fitments in two vintage size formats, 29X4.76 and 4.75-20. The decision is less about modern performance tire shopping and more about selecting the right period-style size presentation for the wheels on the car. Careful wheel confirmation matters before putting a restored or long-stored Whippet back on the road.
Which Tire Size Is Right for The 1927 Whippet 93A
The 1927 Whippet 93A 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 systems and different rim diameters, so the real decision starts with wheel verification rather than brand or appearance alone. Once the wheel size is confirmed, the choice becomes selecting the proper period-style tire format for the vehicle's setup.
The 29X4.76 size uses an early diameter-by-section format, where 29 refers to the approximate overall tire diameter and 4.76 refers to the nominal section width. It is a bias-ply fitment that suits the upright proportions and traditional tire profile expected on a late-1920s automobile. This style of sizing is especially relevant to restoration-minded owners because it reflects an earlier way of describing tire dimensions than later numeric rim-based sizes. Choosing this size starts with confirming that the car is equipped for this wheel and tire arrangement rather than assuming interchangeability with other vintage formats.
The 4.75-20 size is a numeric bias-ply format, with 4.75 indicating nominal section width in inches and 20 indicating the rim diameter. It remains a very traditional fitment style for pre-war vehicles and gives the 1927 Whippet 93A the tall, narrow tire character associated with cars of this period. For buyers, the main practical difference is that this size is tied directly to a 20-inch wheel, so wheel diameter must be verified before moving forward. It is the right path when the car carries that specific rim setup and the goal is a proper vintage-style presentation.
Sub-model fitment is straightforward here because the covered 6 Cyl. configuration uses the same two primary tire sizes already associated with the 1927 Whippet 93A. Checking the exact wheel setup on the car still matters, since the available sizes use different rim diameters and vintage sizing formats.
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1927 Whippet 93A 6 Cyl.
The 1927 Whippet 93A 6 Cyl. uses the same bias-ply fitment family as the core model, with both 29X4.76 and 4.75-20 appearing in the covered setup. Tire selection therefore centers on confirming which wheel and rim arrangement is actually on the car before choosing a period-style replacement.
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 1927 Whippet 93A usually need clarity on vintage tire size meaning, wheel confirmation, period-style replacement choices, and the basic inspections worth making before a restored or seldom-driven car returns to road use.
Tire Size & Fitment
What tire size fits a 1927 Whippet 93A?
The 1927 Whippet 93A uses two primary bias-ply tire sizes: 29X4.76 and 4.75-20. Those are not simply two ways of writing the same size, because they belong to different vintage sizing conventions and are associated with different rim dimensions.
The practical next step is to confirm which wheel setup is on the car before choosing a tire. A restored Whippet, an older survivor, or a car that has had wheels changed over the years can no longer be judged by model name alone, so measuring the wheel and checking the current tire markings is the safest way to match the correct vintage fitment.
What size rim does a 1927 Whippet 93A use?
The two tire fitments tied to the 1927 Whippet 93A use different rim diameters. The 29X4.76 fitment is associated with a 6.0-inch rim diameter, while the 4.75-20 fitment uses a 20-inch rim.
That difference makes rim confirmation the first real fitment check on this vehicle. Before selecting a tire, inspect the wheel itself and compare it to the size already mounted on the car, because antique and pre-war vehicles are often restored, repaired, or updated over time and may no longer carry the wheel arrangement a buyer expects to find.
What does 29X4.76 mean on a 1927 Whippet 93A?
On a 1927 Whippet 93A, 29X4.76 is an antique diameter-by-section tire size. The 29 refers to the approximate overall diameter of the tire, and 4.76 refers to the nominal section width, rather than the wheel diameter being built into the size code the way later sizes often are.
That matters because the size can look unfamiliar to modern buyers and can be mistaken for a later-style fitment. On a pre-war car, understanding the format helps prevent ordering by appearance alone, and it makes it easier to compare the mounted tire, the wheel itself, and the car's overall stance before committing to a replacement.
Choosing the Right Tire
What should I consider when choosing a 29X4.76 or 4.75-20 tire for a 1927 Whippet 93A?
Start with the basics: the correct tire for a 1927 Whippet 93A depends on whether the car is set up for 29X4.76 or 4.75-20. Both are bias-ply fitments, but they use different sizing systems and are not choices to make by looks alone.
After the wheel setup is confirmed, think about the goal for the car. A restoration-focused owner may want the vintage size format that best matches the car's present wheel arrangement and visual proportions, while a road-use owner should also inspect wheel condition, tire age, and clearance at full steering lock before putting the vehicle into regular service.
How do I choose between the available 1927 Whippet 93A tire sizes?
Choosing between the available 1927 Whippet 93A tire sizes is really a matter of choosing the correct wheel-based fitment, not selecting between two interchangeable options. The car is associated with both 29X4.76 and 4.75-20, and each one belongs to a different vintage wheel arrangement.
The best approach is to inspect the car as it sits today. Check the size stamped or molded on the existing tire, verify the wheel diameter, and compare the vehicle's current setup to your restoration or driving goal. That process matters far more on a 1920s car than trying to force a later-style tire decision onto a vehicle built around much earlier sizing conventions.
What rim-fitment details should I compare when choosing 1927 Whippet 93A tires?
The most important rim-fitment detail on a 1927 Whippet 93A is diameter, because the two associated tire sizes do not share the same rim size. A 29X4.76 setup and a 4.75-20 setup call for different wheels, even though both are bias-ply vintage fitments.
Beyond diameter, inspect the wheel's overall condition before mounting new tires. On an antique car, bead-seat condition, straightness, and the general integrity of the wheel matter just as much as the printed tire size. That is especially true if the Whippet has been stored for years or restored with replacement wheels whose dimensions may not match what a buyer expects from the model name alone.
Restoration & Appearance
Which tire should I choose for a period-style 1927 Whippet 93A?
For a period-style 1927 Whippet 93A, the right starting point is staying with the correct bias-ply fitment and matching the tire to the wheel setup actually on the car. The two associated vintage sizes are 29X4.76 and 4.75-20, and either one needs to be chosen by wheel configuration rather than by appearance alone.
A strong restoration decision usually comes from balancing visual authenticity with the car's present hardware. Tire proportions are very noticeable on a 1920s automobile, so the mounted size has a major effect on stance and overall presentation. When exact originality matters, marque literature, period photos, and vehicle-specific restoration references are worth consulting before making the final call.
Does correct tire fitment matter for a 1927 Whippet 93A restoration?
Correct tire fitment matters a great deal on a 1927 Whippet 93A restoration because early cars visually depend on tall, narrow tires and properly matched wheel dimensions. Using the right bias-ply size format helps preserve the car's stance and avoids giving a pre-war vehicle a mismatched or overly modern look.
Fitment also affects more than appearance. An incorrect size can create problems with wheel compatibility, body clearance, and overall road readiness, especially on a car that may have seen many decades of repairs or parts changes. Confirming the wheel arrangement before ordering tires is one of the simplest ways to keep a restoration visually convincing and mechanically sensible.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1927 Whippet 93A?
Yes, modifications can affect tire fitment on a 1927 Whippet 93A. Even though the vehicle is associated with 29X4.76 and 4.75-20 bias-ply sizes, replacement wheels, brake work, suspension changes, or long-ago repairs can leave an antique car wearing a setup that no longer matches what another example of the same model may use.
That is why a hands-on inspection matters more than assumptions. Check the wheel diameter, inspect steering and fender clearance, and note whether the car sits at its intended ride height before choosing tires. On a pre-war vehicle, even small hardware changes made decades ago can affect what size is practical to use safely and cleanly.
What should I inspect before driving a 1927 Whippet 93A on new tires?
Before driving a 1927 Whippet 93A on new tires, inspect the wheels for damage or severe corrosion, confirm the tire size matches the wheel setup, and look over the car's steering and suspension for obvious looseness or wear. On an antique vehicle, the condition of surrounding components matters almost as much as the tires themselves.
Once the tires are mounted, verify air retention and make sure the tires clear the body and suspension through normal steering travel. A careful short test drive is worthwhile on a vehicle of this age, especially if it has spent long periods in storage, because fresh tires can reveal wheel, brake, or chassis issues that old hardened tires may have been masking.
How should tires on a collector 1927 Whippet 93A be maintained?
Tires on a collector 1927 Whippet 93A should be maintained with regular pressure checks, visual inspections, and sensible storage habits. Even when tread wear is minimal, a seldom-driven antique car can still develop age-related issues such as cracking, air loss, flat spotting, or sidewall deterioration over time.
A useful routine is to inspect the tires before each outing and again after the car has been parked for an extended period. Keep the vehicle away from prolonged sunlight, heat, moisture, and ozone-producing equipment when stored, and do not rely on appearance alone to judge condition. A vintage Whippet often covers few miles, so age and storage history deserve as much attention as tread.
