1928 Vehicle Tire Fitment Guide

The 31X5.25 size is specific here to the 1928 Buick 115 Standard. As a make- and model-specific fitment in this guide, it stands apart from the more heavily shared late-1920s balloon sizes. It follows the older diameter-by-section format and is paired on the same Buick with 525-21, giving owners two common ways to identify the application. For a vehicle like the Buick 115 Standard, that paired notation is especially important when checking an older spare, surviving wheel tags, or restoration paperwork. Confirmation matters because Buick’s 1928 range includes distinctly different sizes on its other series.

Rim Diameter: 21 in  ·  Sidewalls: Wide Whitewall, Blackwall

The 525-21 size is used on the 1928 Buick 115 Standard and is supported here by several bias-ply product choices. Available options include Firestone Classic Bias Ply in Blackwall and Wide Whitewall styles, plus an Excelsior Comp H Blackwall, all built for 21-inch rims. Listed Firestone products show a 2.50 to 3.00-inch rim-width range and a maximum load capacity of 1120 pounds at 36 psi, while the Excelsior product lists a wider rim range. This size gives Buick owners a useful mix of restoration-oriented visual choices and a specialty-style alternative, depending on vehicle use and wheel configuration.

The 33X6.00 size is associated with the 1928 Buick 120 Master and Buick 128 Master. It indicates a larger Buick application than the 115 Standard and reflects how quickly fitment changed within a single make in 1928. The size is paired with 600-21, which is the more direct path to listed product options for these Master-series cars. As a larger balloon-era fitment, 33X6.00 suits full-size late-1920s Buick proportions and emphasizes why model-specific identification is necessary. Owners should confirm whether their car remains on the original wheel diameter before choosing a replacement tire.

Rim Diameter: 21 in  ·  Sidewalls: Blackwall, Wide Whitewall

The 600-21 size fits the 1928 Buick 120 Master and Buick 128 Master and offers a good spread of bias-ply choices. Products include Lester in Blackwall form and BFGoodrich Silvertown Classic Bias Ply in both Blackwall and Wide Whitewall styles. Listed BFGoodrich products specify 21-inch rim diameter, a 3.00 to 3.75-inch rim-width range, and a maximum load capacity of 1350 pounds at 36 psi. For owners of larger 1928 Buicks, this size offers a balance between a substantial period-correct look and multiple sidewall presentations, which can matter on a restoration where visual proportion is a priority.

The 32X7.00 size is shown for the 1928 Cadillac 8 Cyl. and represents one of the larger luxury-car fitments in this year’s range. It is the older diameter-by-section expression of the application, paired with 700-20 for product selection. On a car of Cadillac’s class and weight, this larger balloon size contributes to the substantial profile expected of a premium late-1920s automobile. Because the Cadillac shares the companion 700-20 fitment with other upscale makes, owners can compare product styles there while still verifying the exact wheel and body configuration on the individual car.

Rim Diameter: 20 in  ·  Sidewalls: Double-Whitewall, Wide Whitewall, Blackwall

The 700-20 size is used by the 1928 Cadillac 8 Cyl., Marmon 75 Series, Stearns-Knight 8H, 8J, and F6-85, plus the Stutz BB. Product choices include Firestone Balloon and BFGoodrich Silvertown Classic Bias Ply offerings in Blackwall, Wide Whitewall, and Double-Whitewall styles. Listed 20-inch products show differing rim-width ranges and load capacities, so this is a size where product details matter, not just nominal dimensions. For larger luxury and performance cars, 700-20 delivers a distinctly substantial late-1920s stance, and sidewall treatment can strongly influence the finished appearance of a restoration.

The 30X5.77 size is one of the most widely shared 1928 fitments, appearing on models such as the Chandler Big and Royal, Franklin Airman, La Salle 8 Cyl., Locomobile 80, Pierce Arrow 81 Series, Velie 77 Series, and Willys-Knight 66A Series, along with Elcar 91 Series and 92 Series. This is a good example of a period-specific balloon sizing expression that does not read like later modern formats. It is closely related to the 30x5 reference on many of the same cars, so owners should compare how their wheel and tire are marked before ordering for a collector vehicle.

The 30x5 size serves several 1928 upscale and specialty applications, including the Chandler Big and Royal, Franklin Airman, La Salle 8 Cyl., Locomobile 80, Pierce Arrow 81 Series, Velie 77 Series, and Willys-Knight 66A Series. In this guide it overlaps heavily with 30X5.77, making it especially important to identify the exact notation used on the vehicle’s current tires, wheel references, or restoration paperwork. This is a period balloon-size fitment rather than a modern metric size, and it appears on cars where appearance, profile, and proper wheel pairing are often just as important as simple dimensional matching.

The 29X4.95 size is used on the 1928 Chandler Special and Essex Super 6. Compared with the larger six-cylinder luxury-car sizes used elsewhere in 1928, this fitment sits in a more moderate range while still reflecting balloon-tire practice of the era. It is paired with 5.00-20, which gives a clearer wheel-diameter reference for shopping. Since this size is limited to only two applications here, it is less of a cross-brand universal fitment and more of a targeted model-size relationship. That makes careful vehicle identification especially worthwhile when sourcing replacement tires.

The 5.00-20 size fits the 1928 Chandler Special and Essex Super 6. Its 20-inch rim designation provides a straightforward fitment reference for owners checking wheels, spare assemblies, or older service records. While no product listing is shown here under 5.00-20, the size remains useful because it translates the period application into a dash-style format that is often easier to compare across tire catalogs and wheel markings. For two cars that share the same fitment but come from different makes, this size also shows how late-1920s manufacturers often converged on similar tire dimensions for similarly classed vehicles.

The 30X4.50 size is associated with the 1928 Chevrolet 4 Cyl. and Ford A Series, making it one of the most recognizable shared fitments of the year for popular four-cylinder cars. As an early balloon-style size, it reflects the compact end of the 1928 market and is paired with the more wheel-specific 450-21 designation. Because both Chevrolet and Ford owners commonly research these cars for restoration and touring, this size is often a starting point for period-style tire selection. Exact sidewall preference and wheel verification still matter, especially on cars that may have been updated over time.

Rim Diameter: 21 in  ·  Sidewalls: Wide Whitewall, Blackwall

The 450-21 size fits the 1928 Chevrolet 4 Cyl. and Ford A Series and is supported here by Goodyear All-Weather Balloon products in both Blackwall and Wide Whitewall styles. Listed specifications include a 21-inch rim diameter, 2.75-inch rim width, and a maximum load capacity of 855 pounds at 32 psi. This makes 450-21 one of the clearer and better-supported small-car fitments for 1928. For owners of a Ford A Series or Chevrolet 4 Cyl., the choice between black and white sidewalls can shape the finished look, while the shared size simplifies comparison across these two popular models.

The 29X4.75 size appears on the 1928 Chrysler 52 Series, Erskine 52 Series, and Pontiac 6 Cyl. It is a relatively compact shared balloon-era fitment used across three different makes, showing how common sizing overlaps were by the late 1920s. This size is paired with 4.75-20, which is the more direct wheel-diameter reference for the same group of cars. Because these are not the same models or body families, owners should still verify the exact vehicle and wheel before purchase, even though the nominal tire size is shared across multiple 1928 applications.

The 4.75-20 size is used on the 1928 Chrysler 52 Series, Erskine 52 Series, and Pontiac 6 Cyl. The 20-inch rim designation helps clarify fitment in a year where many cars are identified by both older and newer-looking size expressions. No product listing is shown here for 4.75-20, but it remains an important reference when comparing period manuals, current wheel dimensions, and surviving spare tires. As a size shared among three makes, it illustrates a common 1928 pattern: similar classes of cars often overlap in tire dimensions even when their chassis and trim differ considerably.

The 30X6.75 size is listed only for the 1928 Chrysler 80 Series, making it one of the more specialized single-application fitments for the year. It represents a larger Chrysler usage and helps distinguish the 80 Series from the smaller 52, 62, and 72 Series models. This size is paired with 700-18, which opens the door to a wider set of product details and sidewall options. For Chrysler owners, that pairing is especially useful because it shows how the upper-end model moved into a more substantial tire class that carries a noticeably different visual and load-bearing character.

Rim Diameter: 18 in  ·  Sidewalls: Double-Whitewall, Blackwall, Wide Whitewall

The 700-18 size is used on the 1928 Chrysler 80 Series and is supported by several Firestone bias-ply products. Available choices include Blackwall, Wide Whitewall, and Double-Whitewall versions in the Firestone Balloon series, plus a Blackwall Firestone Classic Bias Ply option. Listed specifications include an 18-inch rim diameter, a 3.75 to 4.00-inch rim-width range, and a stated maximum load capacity of 1520 pounds at 36 psi on several products. This size gives upper-series Chrysler owners a meaningful mix of profile and sidewall choices, which can be especially important when balancing touring use with restoration appearance.

The 33X6.75 size is shown for the 1928 Cunningham 8, Lincoln 8 Cyl., and Pierce Arrow 36 Series. This is a premium large-car fitment and sits near the upper end of the year’s size range, consistent with prestigious and substantial chassis. It is paired with 700-21 for currently listed products, making that dash-style equivalent especially important for owners shopping today. Because this size appears on only a few distinguished models, it is less about broad interchangeability and more about matching a significant late-1920s luxury-car tire profile to the correct wheel and overall vehicle presentation.

Rim Diameter: 21 in  ·  Sidewalls: Blackwall, Wide Whitewall, Double-Whitewall

The 700-21 size fits the 1928 Cunningham 8, Lincoln 8 Cyl., and Pierce Arrow 36 Series. Product choices include Firestone Balloon Blackwall, Wide Whitewall, and Double-Whitewall versions, along with a Michelin Double Rivet Blackwall. Listed Firestone products specify 21-inch rim diameter, a 3.75 to 4.00-inch rim-width range, and a maximum load capacity of 1930 pounds at 40 psi. This is a standout size for large luxury 1928 vehicles, where tire profile and sidewall style strongly influence the car’s visual presence. It also demonstrates that not every 700-series tire offers the same brand character or sidewall treatment.

The 29X5.00 size appears on the 1928 Dodge 4-128, Durant 55 Series, Durant 65 Series, and Graham 10 Series. It is a shared mid-range balloon fitment that crosses multiple makes without extending into the largest luxury-car applications. This size is paired with 500-19, which is the more direct route to product information and wheel-diameter confirmation. For owners of these cars, the overlap across Dodge, Durant, and Graham can simplify initial tire research, but final fitment still depends on the exact model and wheel arrangement. That is particularly important on collector cars that may no longer retain original wheels.

Rim Diameter: 19 in  ·  Sidewalls: Blackwall

The 500-19 size is used on the 1928 Dodge 4-128, Durant 55 Series, Durant 65 Series, and Graham 10 Series. Available bias-ply products include an Excelsior Comp H Blackwall and a Firestone Dirt Track Ribbed Front Blackwall. The Excelsior listing shows a 19-inch rim diameter with a 4-inch rim width, while the Firestone racing-oriented option includes a 4.00 to 5.00-inch rim-width range and a stated load capacity of 895 pounds at 32 psi. This is one of the more unusual product groups for 1928 because it includes both a conventional period-style offering and a specialty performance-focused tire.

The 31X6.00 size is one of the more widely shared 1928 applications, used on the Dodge 6-Sen., Gardner 85 Series, Graham 29 Series, Hudson Super, Hupmobile M, Locomobile 70, Peerless 80 Series, Peerless 91 Series, and Willys-Knight 70A Series. This broad spread suggests a common fitment for larger six-cylinder and upper-range cars of the period. It is paired with 600-19, which is the shopping-friendly size notation in this guide. Because so many makes use it, this fitment is best treated as a class-based late-1920s size rather than something tied to a single manufacturer.

Rim Diameter: 19 in  ·  Sidewalls: Wide Whitewall

The 600-19 size serves a broad range of 1928 vehicles, including the Dodge 6-Sen., Gardner 85 Series, Graham 29 Series, Hudson Super, Hupmobile M, Locomobile 70, Peerless 80 Series, Peerless 91 Series, and Willys-Knight 70A Series. The listed product offering is a Lester Classic Bias Ply Wide Whitewall for 19-inch applications. Even with only one product shown, the size remains significant because it covers many larger cars in the year’s middle and upper tiers. For a touring sedan or club sedan restoration, this fitment can play a major role in achieving the right visual scale while preserving period tire construction.

The 29X5.25 size is shared by the 1928 Dodge 6-Vic, Gardner 75 Series, Graham 14 Series, Marmon 68 Series, and Peerless 60 Series. It falls into a useful middle range of 1928 balloon sizes and spans both mainstream and more upscale makes. This size is paired with 5.25-19, which gives a clearer modern shopping reference through its wheel-diameter format. Because these applications cover different manufacturers and market positions, the tire size alone should not be treated as proof of interchangeability in every detail. Exact wheel and body clearance should still be reviewed on the individual car.

The 5.25-19 size applies to the 1928 Dodge 6-Vic, Gardner 75 Series, Graham 14 Series, Marmon 68 Series, and Peerless 60 Series. Its 19-inch notation makes it especially useful when comparing current wheels against period tire references. No specific product is shown here for this size, but it remains an important fitment bridge between the older 29X5.25 notation and the wheel diameter actually on the car. For owners working with mixed restoration paperwork or spare tires marked in only one format, recognizing this paired relationship can prevent confusion and help narrow the correct replacement category.

The 29X5.50 fitment appears across a large group of 1928 vehicles, including the Durant 75 Series, Falcon 12 Series, Graham 19 Series, Hupmobile A, Marmon 78 Series, Moon 72 Series, Oakland 212 Series, Studebaker Commander, Studebaker Dictator, and Willys-Knight 56 Series. It is one of the year’s most widely shared balloon sizes and suits a broad class of medium-to-larger passenger cars. Some of these same applications also use 550-19, while the Studebaker Commander and Dictator are instead paired with 550-20, so wheel diameter should be verified carefully before selecting a product.

Rim Diameter: 19 in  ·  Sidewalls: Blackwall, Wide Whitewall

The 550-19 size is used on the 1928 Durant 75 Series, Falcon 12 Series, Graham 19 Series, Hupmobile A, Marmon 78 Series, Moon 72 Series, Oakland 212 Series, and Willys-Knight 56 Series. Product options include BFGoodrich Silvertown Classic Bias Ply in both Blackwall and Wide Whitewall versions. Listed specifications show a 19-inch rim diameter, a 2.50 to 3.00-inch rim-width range, and a maximum load capacity of 1040 pounds at 32 psi. This is a strong choice category for owners seeking a mainstream late-1920s passenger-car fitment with a clear visual choice between darker period understatement and a more accented whitewall look.

The 30X6.20 size is used on the 1928 Gardner 95 Series, Kissel 80, and Reo Flying Cloud. It occupies a relatively focused fitment niche among larger 18-inch applications and helps distinguish these cars from nearby 30X6.00 or 30X6.50 uses. This size is paired with 650-18, which carries product details and sidewall options for shopping. In practical terms, 30X6.20 is best approached as a size that requires careful confirmation rather than estimation, since several 1928 vehicles used closely related but not identical balloon dimensions. Exact wheel size and existing tire markings are worth checking before replacement.

The 31X6.20 size appears on the 1928 Graham 35, Moon 80 Series, and Studebaker President. It represents a larger-car fitment with a substantial profile, but it is still shared among only a small group of upper-range models. This size is paired with 650-19, making that dash-style designation the more useful route for current product selection. Because the same nominal size crosses multiple makes, it can look interchangeable at first glance, yet owners should still confirm the wheel, body clearance, and overall restoration setup. Late-1920s upper-series cars often leave less room for guesswork than smaller common models.

Rim Diameter: 19 in  ·  Sidewalls: Blackwall, Wide Whitewall

The 650-19 size fits the 1928 Graham 35, Moon 80 Series, and Studebaker President. Available products include Firestone Classic Bias Ply Blackwall, Lester Classic Bias Ply Wide Whitewall, and Firestone Balloon versions in both Blackwall and Wide Whitewall styles. Some listed Firestone Balloon products specify a 19-inch rim diameter, a 3.25 to 3.50-inch rim-width range, and a maximum load capacity of 1430 pounds at 36 psi. This gives owners of larger 1928 cars a valuable mix of sidewall treatments and series styles, useful when the goal is to match both the car’s physical requirements and its preferred period presentation.

The 32X6.20 size is associated with the 1928 La Salle 8 Cyl., Stutz BB, and Velie 88 Series. This places it squarely among more substantial 1928 passenger-car fitments and links it to vehicles with a strong visual presence. The paired dash-style size is 650-20, which is where currently listed product options appear. As with many late-1920s applications, the size notation itself is an important identification tool because several nearby tire dimensions can seem similar without being the same. On a collector car with side-mounts or long fenders, proper size selection can also affect both appearance and usable clearance.

Rim Diameter: 20 in  ·  Sidewalls: Wide Whitewall, Blackwall

The 650-20 size fits the 1928 La Salle 8 Cyl., Stutz BB, and Velie 88 Series and has one of the broader product mixes in this year’s catalog. Choices include Firestone Classic Bias Ply in Blackwall and Wide Whitewall styles, plus Denman Highway and Deka truck-oriented Blackwall offerings. Listed Firestone products specify 20-inch rim diameter, a 3.00 to 5.00-inch rim-width range, and a maximum load capacity of 2120 pounds at 60 psi. Because the available products are not all the same type or intended character, owners should pay close attention to series and attribute differences when selecting for a passenger-car restoration.

The 32X6.75 size is used on the 1928 Marmon 75 Series, Stearns-Knight 8H, 8J, and F6-85, plus the Stutz BB. This is a high-end 1928 fitment that overlaps with some of the largest passenger-car applications of the year. Although no matching product is shown here directly under the 32X6.75 notation, several of these same vehicles also appear under 700-20, which provides current product detail. For restorers, that dual notation is important because period references may favor the older sizing expression while modern catalog searches often begin with the dash-style size tied to wheel diameter.

The 33X6.20 size is specific here to the 1928 Peerless 69 Series. As a single-model fitment, it stands apart from the more widely shared balloon sizes used by many other makes. The application is paired with 6.50-21, giving owners a second and often more immediately useful way to identify the same fitment when shopping. Because Peerless also used other sizes on its 60, 80, and 91 Series models, this entry highlights how much tire selection can vary even within one make for 1928. Exact series identification should be confirmed before choosing a replacement.

The 6.50-21 size is listed for the 1928 Peerless 69 Series and represents a larger 21-inch application for an upper-range car. No product listing is shown here under this size, but it remains an important fitment reference because it translates the companion 33X6.20 notation into a wheel-diameter format. On a car like the Peerless 69 Series, correct scale is part of the visual identity, so selecting the exact tire size matters for both stance and proper clearance. Owners should confirm the wheel diameter on the car, especially if the vehicle has had older restoration work or wheel changes.

The 28X4.75 size appears on the 1928 Star 4 Cyl. and Whippet 96 Series. It sits near the smaller end of the year’s passenger-car range and reflects compact late-1920s balloon-tire practice for lighter vehicles. The fitment is paired with 475-19, which provides the clearer wheel-diameter reference and access to listed products. Since this size applies to only two makes here, it is a focused application rather than a broad cross-market standard. For owners of smaller 1928 cars, getting the exact size right is especially important because a slight change in section width or overall profile can alter appearance noticeably.

Rim Diameter: 19 in  ·  Sidewalls: Blackwall, Wide Whitewall

The 475-19 size fits the 1928 Star 4 Cyl. and Whippet 96 Series and is supported by Goodyear Deluxe All-Weather products in both Blackwall and Wide Whitewall forms. Listed specifications include a 19-inch rim diameter, 3-inch rim width, and a maximum load capacity of 900 pounds at 32 psi. This is one of the clearest small-car product groups for 1928, giving owners of lighter vehicles an easy choice between understated and more decorative sidewall styles. Because these applications sit at the compact end of the year’s range, proper fitment helps preserve the car’s intended proportions and steering character.

Rim Diameter: 20 in  ·  Sidewalls: Wide Whitewall, Blackwall

The 550-20 size is used on the 1928 Studebaker Commander and Studebaker Dictator. Unlike many other 29X5.50-class applications that pair with 550-19, these two Studebaker models are tied to a 20-inch wheel diameter, making them an important exception within the year’s fitment patterns. Available products include BFGoodrich Silvertown Classic Bias Ply tires in Blackwall and Wide Whitewall styles. Listed specifications show a 20-inch rim diameter, 3-inch rim width, and a maximum load capacity of 1075 pounds at 32 psi. Studebaker owners should verify wheel diameter carefully before assuming interchange with other 550-series applications.

The 30X5.25 size is specific here to the 1928 Velie 66 Series. It is a useful reminder that not every late-1920s fitment falls into a broad cross-make pattern; some are tightly tied to one model line. This size is paired with 5.25-20, which is often the simpler reference when confirming wheel diameter on the car. Because Velie also used different sizes on its 77 Series and 88 Series, accurate series identification is essential. On a restoration project, confirming the existing wheel and spare-tire arrangement can help avoid confusion among similar-looking 5.25 or 30-inch period balloon sizes.

The 5.25-20 size is listed for the 1928 Velie 66 Series. Its 20-inch rim notation provides the clearest practical identifier for current fitment checks, especially on a vehicle where wheels or spares may have been changed over time. No product listing is shown here for this size, so careful verification becomes even more important before moving on to product selection. For a single-model application like the Velie 66 Series, the exact tire size carries more weight than broad year-level assumptions. Matching the wheel diameter and confirming the vehicle’s specific series can prevent ordering a neighboring size that looks similar on paper.