The 1939 Buick 90 Series stood at the top of Buick’s prewar lineup, combining full-size luxury presence with the long-wheelbase character buyers expected from a senior American car of the late 1930s. That kind of car depends heavily on tire stance and sidewall presentation, because the tires are such a visible part of its overall look. The 1939 Buick 90 Series uses a 750-16 bias-ply tire on a 16-inch rim. Within that size, there are traditional blackwall and wide whitewall choices, along with several tire series aimed at different appearance and use priorities. The key decision is whether the car is being kept restoration-oriented, driven casually, or evaluated around a more specialized service setup.
Which Tire Size Is Right for The 1939 Buick 90 Series
The 1939 Buick 90 Series uses one primary tire size: 750-16. That is a bias-ply fitment on a 16-inch rim, and the same size carries across the covered Limited 8 Cyl. sub-model. With size settled, the real choice becomes selecting the right sidewall style, tire series, and overall tire character for a restoration-minded presentation or practical road use.
A 750-16 size is a vintage numeric bias-ply designation in which the 7.50 figure refers to the tire’s nominal section width in inches and the 16 identifies the wheel diameter. On a 1939 Buick 90 Series, that format preserves the tall, substantial bias-ply look associated with late-1930s American luxury cars. Available choices in this size include Firestone, Lester, BFGoodrich, and STA products, with blackwall and wide whitewall sidewall treatments as well as several classic and utility-oriented series. It is the right starting point when the goal is to keep the Buick on its proper rim diameter and in a period-style tire profile.
Fitment is straightforward for the covered 1939 Buick 90 Series sub-model. The tire size remains consistent, so checking the exact sub-model mainly helps confirm that the car is still on its expected wheel and tire setup before comparing appearance and tire-series options.
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1939 Buick 90 Series Limited 8 Cyl.
The 1939 Buick 90 Series Limited 8 Cyl. uses the same 750-16 bias-ply tire size as the model line covered here. That keeps tire selection focused on sidewall presentation, tire series, and the condition of the existing wheels rather than sorting through multiple primary fitments.
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 1939 Buick 90 Series Tires for Sale
Available 750-16 choices span Firestone, Lester, BFGoodrich, and STA, with both blackwall and wide whitewall styles. The product range also includes classic passenger-car bias-ply designs and more specialized military or transport-style series, so appearance and intended use matter as much as size.
Owners of a 1939 Buick 90 Series usually want clarity on 750-16 sizing, 16-inch rim fitment, bias-ply construction, sidewall appearance, and what to inspect before putting a large prewar Buick back on the road.
Tire Size & Fitment
What tire size fits a 1939 Buick 90 Series?
The 1939 Buick 90 Series uses a 750-16 tire size. This is a numeric bias-ply fitment on a 16-inch rim, and it is the primary size associated with the covered vehicle and its listed sub-model.
That means the first step is not comparing multiple primary sizes, but making sure the car still has the correct wheel diameter before choosing among available 750-16 tires. On an older restored or survivor Buick, wheel changes over the years are always worth checking before selecting sidewall style or tire series.
What size rim does a 1939 Buick 90 Series use?
The 1939 Buick 90 Series uses a 16-inch rim with its 750-16 tire fitment. Product fitments in this size are built around that same 16-inch wheel diameter, which is central to keeping the tire choice in the proper vintage range.
Wheel diameter should be confirmed at the car, especially if the Buick has been restored long ago or has had parts swapped during its life. Rim width also matters when comparing individual tires in this size, since many 750-16 products are intended for 5.00- to 6.00-inch rims.
Does the 1939 Buick 90 Series Limited 8 Cyl. use the same tire size?
Yes. The 1939 Buick 90 Series Limited 8 Cyl. uses the same 750-16 bias-ply tire size as the 1939 Buick 90 Series fitment covered here. That keeps the primary fitment question simple and centered on one vintage size.
With the size shared, selection comes down to how the car is being used and presented. A restoration-minded owner may focus on blackwall versus wide whitewall appearance, while a road-use buyer may spend more time comparing tire series, rim-width compatibility, and the condition of the existing wheels.
Choosing the Right Tire
What should I consider when choosing a 750-16 tire for a 1939 Buick 90 Series?
Start with the correct 750-16 size and 16-inch wheel diameter, then compare the tire’s construction, rim-width specification, sidewall style, and intended character. In this size, choices range from classic passenger-car bias-ply designs to more specialized military or transport-style offerings.
A large prewar Buick usually looks very different on a blackwall than it does on a wide whitewall, so appearance matters as much as fitment. It also helps to check whether the car is driven gently, shown regularly, or used in a more specialized setting before narrowing the tire series.
What sidewall styles are available for 1939 Buick 90 Series tires?
The available 750-16 tires for a 1939 Buick 90 Series include both blackwall and wide whitewall sidewall styles. That gives the owner a meaningful visual choice without changing the primary tire size or moving away from the bias-ply construction associated with this fitment.
Blackwalls tend to suit a more understated or service-oriented presentation, while wide whitewalls create a more formal prewar look on a senior Buick. The right choice depends on how the car is trimmed, how authentic the restoration needs to appear, and whether visual impact matters more than restraint.
What brands offer tires for the 1939 Buick 90 Series?
Tires in 750-16 for the 1939 Buick 90 Series are available from Firestone, Lester, BFGoodrich, and STA. Those brands cover several different tire series within the same size, including classic passenger-car styles and heavier-duty specialty options.
Brand alone is only part of the decision. It makes more sense to compare the exact tire series, sidewall treatment, rim-width suitability, and whether the tire’s overall look fits the Buick’s restoration style or intended road use before settling on a specific product.
Restoration & Appearance
Which tire should I choose for a period-style 1939 Buick 90 Series?
A period-style starting point for a 1939 Buick 90 Series is the correct 750-16 bias-ply size on a 16-inch rim. Within that fitment, classic passenger-car bias-ply options with traditional sidewall treatments generally suit the formal scale and prewar proportions of the car.
The best appearance choice depends on the restoration’s goals rather than size alone. A wide whitewall creates a dressier late-1930s presentation, while a blackwall reads more restrained. When exact historical authenticity matters, marque references and vehicle-specific restoration documentation are worth reviewing before final selection.
How does tire construction affect the appearance of a restored 1939 Buick 90 Series?
On a restored 1939 Buick 90 Series, tire construction affects both stance and visual character. The 750-16 fitment here is bias-ply, and that construction supports the tall-profile, prewar presentation most buyers expect to see on a senior Buick of this era.
Appearance is only part of the story, because sidewall treatment changes the car’s visual tone just as much. A wide whitewall can emphasize luxury character, while a blackwall can make the car look more reserved. Matching construction and sidewall style to the restoration theme usually produces the most coherent result.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1939 Buick 90 Series?
Yes. Even though the primary tire size is 750-16, modifications can change whether a particular tire choice is suitable for the car. Wheel swaps, altered rim width, suspension changes, or body and brake updates can all affect clearance and overall fitment on a prewar Buick.
That is why the actual wheel and chassis setup should be checked before ordering tires, especially on a car with a long restoration history. Confirm the 16-inch wheel diameter first, then inspect width, steering clearance, and fender space so the selected tire matches the Buick’s current configuration.
What should I inspect before driving a 1939 Buick 90 Series on new tires?
Before road use, inspect the wheels, valve hardware, lug hardware, and overall tire seating, then verify inflation and look closely at steering and fender clearance. On a heavy prewar car, it also makes sense to examine suspension condition, brake function, and whether the tires are wearing evenly.
A 1939 Buick 90 Series often spends long periods parked, so road readiness involves more than fresh rubber. Short test drives at moderate speed can reveal pull, vibration, rubbing, or air-loss issues early. Catching those problems before a longer outing helps protect both the tires and the car.
How should 750-16 tires on a collector 1939 Buick 90 Series be maintained?
Collector-car 750-16 tires should be kept properly inflated, inspected regularly for cracks, cuts, bulges, and uneven wear, and checked for air loss before the Buick goes back on the road. Storage matters too, because long periods of inactivity can be just as hard on vintage-style tires as mileage.
A cool, dry space away from direct sunlight and ozone sources helps preserve sidewalls on a collector vehicle. It also helps to move the car occasionally or use sound storage practices to avoid long-term flat spotting. Regular visual checks are especially important when the Buick is driven infrequently.
