The 1959 Buick Electra belongs to one of Detroit’s most expressive late-1950s styling years, with the long, low proportions and dramatic chrome presence that defined Buick’s upscale full-size cars of the era. On a car like this, tire choice affects more than road manners; it also shapes the stance and visual balance that make a 1959 Electra look right. The primary fitment is an 800-15 bias-ply tire on a 15-inch rim. Within that size, the main visible distinction is whitewall presentation, with wide whitewall options in the Coker Classic Bias Ply line. The decision usually comes down to preserving a period-style look or carefully evaluating a radial equivalent for road use.
Which Tire Size Is Right for The 1959 Buick Electra
The 1959 Buick Electra uses one primary tire size: 800-15. That size is a bias-ply fitment on a 15-inch rim, and it carries across the covered Electra Base & 225 configuration. Once size is confirmed, the real choice becomes how closely to stay with a traditional bias-ply presentation, which whitewall treatment suits the car, and whether a radial equivalent is worth considering for your wheel and vehicle setup.
An 800-15 size uses the older numeric bias-ply system, where the leading number refers to nominal section width in inches and the final number identifies a 15-inch rim. For the 1959 Buick Electra, this is the primary bias-ply fitment and it matches the traditional tire construction associated with big American cars of the period. Available choices in this size center on the Coker Classic Bias Ply series, with wide whitewall treatments that change the car’s visual character without changing the fitment size itself. It is the right starting point for owners focused on authentic proportions, proper wheel diameter, and restoration-oriented appearance.
Fitment is straightforward for the covered 1959 Buick Electra sub-models. The Electra Base & 225 uses the same primary tire size, so the next step is usually choosing the right tire style and deciding whether to remain with bias-ply construction or compare a radial equivalent carefully.
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1959 Buick Electra Base & 225
The 1959 Buick Electra Base & 225 uses the 800-15 bias-ply fitment on a 15-inch rim. That keeps tire selection focused on whitewall presentation, period-style appearance, and whether a radial equivalent makes sense after the wheels and overall vehicle setup have been checked.
Bias-Ply to Radial Tire Conversion for the 1959 Buick Electra
The original 800-15 tire size has four radial-equivalent options. Those include 225R15 as an 80-series metric radial, P235/75R15 as a 75-series P-metric radial, P235/70R15 as a 70-series P-metric radial, and 800R15 as a bias-look radial. Together, they span traditional metric sizing, more modern P-metric profiles, and a radial option that preserves a more vintage visual presentation. A 6-8 inch rim width range is associated with these equivalents, and wheel width, overall dimensions, and clearance should be checked before changing from the original size format.
Modern Radial Equivalents
225R15
Equivalent 80-series Metric Radial (800-15)
P235/75R15
Equivalent P-metric 75-series Radial (800-15)
P235/70R15
Equivalent P-metric 70-series Radial (800-15)
800R15
Bias-look Radial Equivalent (800-15)
Important Considerations When Replacing Bias Ply With Radial
Compare overall diameter and section width carefully to ensure proper fit.
Verify recommended rim range (6-8 in) and load needs match your vehicle specifications.
Check fender clearance, steering clearance, and stance before installation.
Consider suspension condition and intended road use when choosing equivalents.
Important Fitment Notes
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 1959 Buick Electra Tires for Sale
Available 800-15 choices focus on Coker Classic bias-ply tires with wide whitewall styling. The main comparison points are whitewall width, shared 15-inch fitment, and the traditional appearance expected on a large late-1950s Buick.
Owners of a 1959 Buick Electra usually want clarity on the 800-15 tire size, 15-inch rim fitment, radial equivalents, wide whitewall choices, and the checks that matter before putting a collector Buick back on the road.
Tire Size & Fitment
What tire size fits a 1959 Buick Electra?
The 1959 Buick Electra uses an 800-15 tire size. This is a numeric bias-ply size designed for a 15-inch rim, and it is the primary fitment for the covered Electra Base & 225 configuration.
That means the first step is not sorting through multiple original sizes, but confirming that the car still has the expected 15-inch wheel setup. Once that is established, tire selection shifts toward construction choice, whitewall appearance, and whether to stay with a traditional bias-ply tire or compare one of the available radial equivalents.
What size rim does a 1959 Buick Electra use?
The primary tire fitment for a 1959 Buick Electra is built around a 15-inch rim. The 800-15 size itself also confirms that rim diameter, since the final number in this vintage numeric format refers to the wheel diameter.
Rim diameter is only part of the fitment picture on a collector car. It is still important to confirm the actual wheel width on the car, especially if the wheels have been changed over the years, because radial-equivalent choices and even some bias-ply products can have different rim-width requirements.
Does the 1959 Buick Electra Base & 225 use the same tire size?
Yes. The covered 1959 Buick Electra Base & 225 configuration uses the same 800-15 bias-ply tire size. That keeps the original fitment question simple because there is no separate primary size to sort out within that sub-model coverage.
Even with shared fitment, it still helps to inspect the car’s actual wheels before choosing tires. A restored car, an older driver, or a modified example may no longer carry the same wheel setup it left with decades ago, and that can affect radial-equivalent selection, sidewall appearance, and overall clearance.
Bias-Ply & Radial Options
Is 800-15 a bias-ply or radial tire for the 1959 Buick Electra?
For the 1959 Buick Electra, 800-15 is the primary bias-ply tire size. In this older numeric format, the size itself refers to the original bias-ply fitment rather than a modern radial size designation.
That matters because staying with bias-ply construction helps preserve the traditional profile and presentation associated with a late-1950s full-size Buick. Owners considering a radial alternative should treat that as a separate fitment decision and confirm wheel width, overall dimensions, and vehicle clearance before making the change.
What radial tire sizes are equivalent to 800-15?
Radial equivalents for 800-15 include 225R15, P235/75R15, P235/70R15, and 800R15. Those options cover an 80-series metric radial, a 75-series P-metric radial, a 70-series P-metric radial, and a bias-look radial that keeps a more vintage-style visual profile.
Each of those sizes should be treated as an alternative rather than an automatic replacement. The associated rim-width range is 6-8 inches, so the next step is confirming the wheel width on the car and checking section width, overall tire dimensions, and clearance at the fenders and steering components.
What should I check before converting my 1959 Buick Electra from bias-ply to radial tires?
Start by confirming the wheel diameter and actual wheel width on the car, then compare the available radial-equivalent sizes for the original 800-15 fitment. On a 1959 Buick Electra, 225R15, P235/75R15, P235/70R15, and 800R15 are the key radial-equivalent sizes to evaluate.
A conversion should also include a close look at fender and steering clearance, suspension condition, and the car’s current ride height. Large collector cars are often modified over time, so a radial option needs to be checked against the real-world setup rather than assumed to match the original bias-ply tire in every dimension.
Choosing the Right Tire
What should I consider when choosing a 800-15 tire for a 1959 Buick Electra?
Begin with the correct primary size, which is 800-15, and make sure the car still uses a 15-inch wheel with compatible width. From there, the decision is mostly about construction and appearance, since the available products stay within the traditional bias-ply format.
On this Buick, visible presentation matters as much as fitment because the tire helps complete the car’s late-1950s stance. Compare whitewall width, tire series, and product specifications such as rim-width compatibility and load capacity, then match those details to whether the car is being restored, shown, or driven regularly.
What sidewall styles are available for 1959 Buick Electra tires?
The available 800-15 options for the 1959 Buick Electra use wide whitewall styling. Within that presentation, the visible difference comes from whitewall width, with both 3.00-inch and 2.50-inch whitewall versions offered in the same Coker Classic Bias Ply series.
That choice has a strong effect on the car’s finished look, especially on a large Buick with extensive brightwork and sweeping body lines. The best approach is to choose the whitewall width that matches the appearance goal of the car, then confirm the rest of the tire’s fitment and wheel compatibility.
What tire series are available for the 1959 Buick Electra?
The available products for the 1959 Buick Electra fall within the Coker Classic Bias Ply series in 800-15. That keeps the selection focused, since the main variation is not between several unrelated series, but between period-style whitewall presentations within the same basic tire family.
For the buyer, that means comparing the visible style details and fitment specifications instead of trying to sort through a crowded product spread. Whitewall width, rim-width compatibility, and the intended use of the car will usually be more important here than choosing between multiple competing series.
Restoration & Appearance
Which tire should I choose for a period-style 1959 Buick Electra?
A period-style 1959 Buick Electra starts with the original 800-15 bias-ply format on a 15-inch rim. That size preserves the vintage sizing convention and supports the traditional visual character expected on a late-1950s Buick full-size car.
Within that size, the practical appearance decision is the wide whitewall treatment, including whether a 2.50-inch or 3.00-inch whitewall better suits the car’s restoration theme. If exact originality matters, the final choice should be compared with marque-specific historical references and the car’s own build and presentation goals.
How does tire construction affect the appearance of a restored 1959 Buick Electra?
Tire construction changes more than the driving feel on a restored 1959 Buick Electra; it also changes the visual tone of the car. A bias-ply 800-15 keeps the vintage size format and traditional presentation, while a radial alternative can alter the look even when it remains close in overall intent.
That difference is why many restoration-oriented owners choose the tire style before they choose the exact product. A bias-look radial can help bridge appearance and modern construction, but it should still be evaluated as its own option rather than assumed to duplicate the proportions of the original bias-ply tire.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1959 Buick Electra?
Yes. Modifications can change tire fitment on a 1959 Buick Electra even when the original size is straightforward. Aftermarket wheels, changes in wheel width, suspension work, altered ride height, or body repairs can all influence how an 800-15 tire or a radial equivalent sits on the car.
A Buick of this era may have been updated many times over its life, so the actual setup deserves a careful inspection before tires are chosen. Checking wheel dimensions, steering clearance, and space at the fender openings is especially important if the car no longer retains its original wheel and suspension arrangement.
What should I inspect before driving a 1959 Buick Electra on new tires?
Before driving a 1959 Buick Electra on new tires, inspect the wheels, valve stems, lug hardware, and the overall condition of the suspension and steering components. Tire pressure should be set correctly, and the new tires should be checked for proper seating and adequate clearance through the steering range.
A low-use collector car also benefits from a broader safety walk-around before returning to the road. Look for fluid leaks, uneven ride height, brake issues, and any signs that old alignment or suspension problems could affect the new tires once the car is back in regular motion.
How should 800-15 tires on a collector 1959 Buick Electra be maintained?
Maintain 800-15 tires on a collector 1959 Buick Electra by checking pressure regularly, inspecting the sidewalls for cracking or cuts, and watching the tread for uneven wear. Cars that spend long periods parked should also be moved occasionally and stored away from prolonged sunlight, moisture, and ozone sources.
Collector-car tires often age out before they wear out, so condition matters as much as tread depth. Regular inspections help catch slow air loss, bulges, or developing damage before a road outing, and they also make it easier to decide whether the car is still best served by bias-ply tires or ready for a carefully checked radial alternative.