The 1928 Buick 120 Master comes from a period when Buick balanced prestige, scale, and six-cylinder smoothness in the upper reaches of the late-1920s American market. Cars of this era depend heavily on proper tire sizing because wheel diameter, overall tire height, and sidewall profile all shape stance and road manners. For the 1928 Buick 120 Master, the primary fitment centers on bias-ply tires in 33X6.00 and 600-21 form, both tied to 21-inch wheel fitment. That leaves buyers choosing between period-style sizing conventions and available sidewall treatments such as blackwall or wide whitewall. The right choice starts with preserving the car’s proportions while confirming wheel and fitment details before road use.
Which Tire Size Is Right for The 1928 Buick 120 Master
The 1928 Buick 120 Master uses two primary tire sizes, both in bias-ply construction and both associated with 21-inch wheel fitment. Because the same sub-model can be encountered with either size notation, the first step is confirming the actual wheel and tire setup on the car, then deciding whether appearance, product choice, or restoration presentation matters most.
A 33X6.00 tire uses an older diameter-by-section system in which the first number refers to the tire’s approximate overall diameter and the second refers to nominal section width. On the 1928 Buick 120 Master, that reflects the tall, substantial tire profile expected on a late-1920s full-size automobile and keeps the fitment rooted in traditional bias-ply construction. This size is primarily useful for buyers focused on authentic early sizing language and proper visual proportion. It is worth checking closely against the wheel currently on the car so the mounted tire matches both the rim and the Buick’s stance.
A 600-21 tire uses the vintage numeric bias-ply system, with 6.00 indicating nominal section width and 21 identifying the rim diameter in inches. For the 1928 Buick 120 Master, this is the size with visible product choice, including Lester and BFGoodrich options in blackwall and wide whitewall form across traditional bias-ply series. That gives the buyer more room to shape the car’s finished look while staying within the correct construction type. It is the practical size to evaluate when the goal is selecting among available period-style tread and sidewall presentations.
Sub-model fitment is straightforward here, because the covered 1928 Buick 120 Master sub-model uses the same pair of primary bias-ply sizes. Checking the exact sub-model still matters so the tire choice stays aligned with the wheel setup and the kind of restoration or road presentation the car is meant to have.
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1928 Buick 120 Master 6 Cyl.
The 1928 Buick 120 Master 6 Cyl. uses the same primary bias-ply fitment family, centered on 33X6.00 and 600-21. That means the real decision is less about sub-model differences and more about confirming the wheel already on the car, then choosing the sidewall style and period-style presentation that best suits the Buick.
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.
Best 1928 Buick 120 Master Tires for Sale
Available 600-21 choices include Lester and BFGoodrich bias-ply tires, with both blackwall and wide whitewall presentations. The product grid is most useful for comparing tire series, sidewall appearance, rim-width specifications where stated, and other details that shape a restoration-oriented selection.
Owners researching 1928 Buick 120 Master tires usually need clarity on early tire-size formats, 21-inch wheel fitment, sidewall appearance, and what to inspect before putting a collector Buick back on the road.
Tire Size & Fitment
What tire size fits a 1928 Buick 120 Master?
The 1928 Buick 120 Master uses two primary bias-ply tire sizes: 33X6.00 and 600-21. Both belong to the same general fitment family for this Buick, with 600-21 tied directly to a 21-inch rim and 33X6.00 using the older diameter-by-section sizing convention common in the late 1920s.
That means the right choice starts with the actual wheel and tire setup on the car today. A surviving Buick may already wear one notation or the other, so it helps to confirm the wheel diameter, compare the existing tire markings, and choose the size that matches the wheel as well as the appearance you want to maintain.
What size rim does a 1928 Buick 120 Master use?
The 1928 Buick 120 Master uses a 21-inch rim. That matches the 600-21 size directly, since the final number in that vintage numeric bias-ply format is the rim diameter in inches.
The practical step is to verify the actual wheel on the car before purchasing tires, especially on an older vehicle that may have had wheels changed over time. Measuring the rim and checking its width helps avoid confusion between antique size markings and ensures the selected bias-ply tire suits the wheel already installed on the Buick.
What does 33X6.00 mean on a 1928 Buick 120 Master?
On a 1928 Buick 120 Master, 33X6.00 is an antique diameter-by-section tire size. The 33 refers to the tire’s approximate overall diameter, and the 6.00 refers to nominal section width, rather than expressing the fitment in the later width-and-rim style seen in sizes like 600-21.
That older format matters because it reflects how many late-1920s tires were described and helps preserve the Buick’s tall, upright tire profile. Before choosing it, compare the marking on the current tire, confirm the wheel diameter, and make sure the mounted setup supports the same visual proportions and clearance expected for the car.
Choosing the Right Tire
What should I consider when choosing a 600-21 tire for a 1928 Buick 120 Master?
Start with the correct size, construction, and wheel compatibility. For a 1928 Buick 120 Master, a 600-21 tire should remain a bias-ply selection, and the available options vary by brand, tire series, sidewall style, stated rim-width range, weight, and load specification where those details are given.
After size is confirmed, the decision usually comes down to appearance and intended use. A blackwall tire gives a more restrained presentation, while a wide whitewall creates a stronger period-style visual statement. Buyers should also compare the wheel’s actual width and inspect the rest of the chassis setup so the chosen tire complements the Buick’s use and restoration direction.
What sidewall styles are available for 1928 Buick 120 Master tires?
The available 600-21 tires for the 1928 Buick 120 Master include blackwall and wide whitewall sidewall styles. Those options create very different visual presentations even when the underlying size and bias-ply construction remain within the same basic fitment family.
Choosing between them depends on how the Buick is being finished and driven. A blackwall tire keeps the look understated, while a wide whitewall adds a more formal restoration-oriented character often associated with upscale cars of the period. Either way, the sidewall choice should come after confirming the correct size and wheel dimensions already on the vehicle.
What brands offer tires for the 1928 Buick 120 Master?
The 1928 Buick 120 Master has 600-21 tire options from Lester and BFGoodrich. Those choices stay within traditional bias-ply construction and give buyers more than one route when selecting a tire for a late-1920s Buick.
Brand is only one part of the decision. It helps to compare the accompanying tire series, sidewall styling, and wheel-width specifications where they are stated, since those details affect both appearance and compatibility. The better approach is to match the tire to the car’s actual wheel setup and the kind of period-style presentation you want to preserve.
Restoration & Appearance
Which tire should I choose for a period-style 1928 Buick 120 Master?
A period-style 1928 Buick 120 Master should stay with the correct bias-ply construction and one of its primary vintage sizes, either 33X6.00 or 600-21 depending on the wheel and tire setup already on the car. That preserves the tall sidewall profile and traditional visual character expected on a Buick from this era.
The next decision is how the finished car should look in use or on display. Available 600-21 products include blackwall and wide whitewall choices, each shaping the Buick’s appearance differently. If exact historical originality is important, compare the tire choice with marque references or restoration records so the final look stays consistent with your goals.
Does correct tire fitment matter for a 1928 Buick 120 Master restoration?
Yes, correct tire fitment matters a great deal on a 1928 Buick 120 Master restoration. Tire height, section width, and construction all influence the car’s stance, wheel-well presence, and the overall impression of a late-1920s luxury-oriented automobile.
Using the proper fitment family also helps avoid a finished car that looks visually off even if the tire mounts to the wheel. Early size markings can be confusing, so restorers should verify both the wheel diameter and the tire notation already associated with the car. That extra check keeps appearance and fitment working together instead of against each other.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1928 Buick 120 Master?
Yes, modifications can affect tire fitment on a 1928 Buick 120 Master. Changes such as replacement wheels, altered wheel width, brake conversions, suspension work, or body repairs can influence how a vintage bias-ply tire sits in the fender opening and how much clearance remains during steering and suspension movement.
That is especially important on a collector car that may have been updated decades ago. Before choosing between 33X6.00 and 600-21, inspect the wheel diameter, confirm the rim’s actual width, and look for any non-original hardware or stance changes. A careful check prevents choosing a tire only by size marking without confirming how the Buick is actually configured.
What should I inspect before driving a 1928 Buick 120 Master on new tires?
Before driving a 1928 Buick 120 Master on new tires, inspect the wheels, valve stems, mounting condition, and inflation pressure, then look over the rest of the running gear for issues that could affect tire behavior. It also helps to confirm that each tire has proper clearance at the fenders and during full steering travel.
A collector Buick may have old suspension components, worn steering parts, or long periods of storage behind it, so the tire should never be the only item checked. After installation, recheck pressure, watch for uneven seating or air loss, and take the first road miles conservatively while making sure the car tracks and steers normally.
How should 600-21 tires on a collector 1928 Buick 120 Master be maintained?
600-21 tires on a collector 1928 Buick 120 Master should be maintained with regular pressure checks, visual inspections, and careful storage habits. Bias-ply tires on low-use vehicles deserve close attention for cracking, cuts, bulges, irregular wear, and any sign that the tire has begun to lose air or age unevenly.
Storage conditions matter nearly as much as mileage on an older Buick. Keeping the car away from prolonged sunlight, heat, moisture, and ozone sources helps protect the sidewalls and casing over time. Even tires that look usable should be inspected before each driving season so the car is not returned to the road on aged or deteriorating rubber.
