1958 Buick 50 Super Tires

The primary tire size for the 1958 Buick 50 Super is 760-15. That is a vintage numeric bias-ply size used on a 15-inch rim, and the covered 1958 Buick 50 Super 8 Cyl. sub-model uses that same fitment.

For most owners, the real choice comes after size is settled. Once 760-15 is confirmed, the next step is deciding between whitewall styles, tire series, and whether to stay with a traditional bias-ply construction or consider one of the radial-equivalent alternatives after checking wheel width and vehicle clearance.

The 1958 Buick 50 Super uses a 15-inch rim with its primary 760-15 tire fitment. That rim diameter is the critical number to confirm before comparing replacement tires, especially if the car has had wheel changes over the years.

Rim diameter is only part of the fitment picture on a collector Buick. It also helps to verify the actual wheel width, because some products in 760-15 and some radial-equivalent paths have their own width expectations, and an older car may no longer be wearing its original-style wheels.

760-15 is a numeric bias-ply tire size. The 760 refers to an approximate 7.60-inch nominal section width, while the 15 indicates the tire fits a 15-inch wheel.

That older sizing format matters because it does not read like a modern metric radial size. A buyer looking at 215R15, P225/75R15, or P235/70R15 should treat those as radial equivalents to compare with 760-15, not as proof that every 15-inch tire will suit the Buick without checking wheel setup and clearance.

On the 1958 Buick 50 Super, 760-15 is the primary bias-ply tire size. The available products in this fitment are bias-ply offerings, which makes 760-15 the traditional construction choice for owners keeping the car in a period-style setup.

That distinction matters because a radial equivalent is a separate decision from the original-style fitment. Bias-ply and radial tires can differ in shape and road feel, so anyone considering a change should confirm wheel width, tire dimensions, and available clearance rather than assuming the same size family behaves the same way.

Radial equivalents for 760-15 include 215R15 as an 80-series metric radial, P225/75R15 as a P-metric 75-series radial, P235/70R15 as a P-metric 70-series radial, and 760R15 as a bias-look radial equivalent. Each one represents a different sizing format rather than a single universal substitute.

Those options give a 1958 Buick 50 Super owner several ways to approach a radial conversion, from a conventional metric radial to a bias-look presentation. The associated rim-width range is 6-8 inches, but wheel width, overall tire dimensions, and steering or fender clearance still need to be checked on the actual car.

A bias-look radial equivalent is available for the 1958 Buick 50 Super in size 760R15. It is intended for owners who want a radial construction while keeping a more traditional tire presentation than a modern-looking metric sidewall may provide.

That makes it especially appealing on a full-size 1958 Buick where visual character is part of the vehicle’s appeal. Even so, a bias-look radial is still a radial alternative, not the same thing as a 760-15 bias-ply, so wheel width, clearance, and the car’s overall setup should be verified before making the switch.

Start with the confirmed 760-15 size and decide what matters most for the car’s use. On a 1958 Buick 50 Super, the biggest factors are keeping the traditional bias-ply construction, selecting the whitewall style that suits the car, and comparing product details such as load capacity, weight, and rim-width guidance where available.

A boulevard-driven restoration may call for a different visual emphasis than a regularly used driver. Looking at the tire series, sidewall width, and wheel compatibility helps narrow the choices, especially on a large late-1950s Buick where the tire’s profile and whitewall treatment strongly influence the finished stance.

The available 760-15 products for the 1958 Buick 50 Super include wide whitewall and narrow whitewall sidewall styles. Wide whitewall choices appear in several widths, while the narrow whitewall option gives a more restrained look within the same primary bias-ply size.

Sidewall style is one of the biggest visual decisions on this Buick because it changes the character of the car without changing its tire size. Owners pursuing a strong late-1950s presentation often focus closely on whitewall width, while others may prefer a subtler look that still stays within the correct general fitment.

Tires for the 1958 Buick 50 Super in 760-15 are available from BFGoodrich, Coker Classic, Universal Vintage Tire, and Goodyear. Those brands appear across several bias-ply series and whitewall treatments rather than as a single one-style-only offering.

Brand alone is usually not the only deciding factor on a car like this. It helps to compare each option by sidewall appearance, series character, rim-width guidance, and any stated load information, since two tires in the same nominal size can still differ in the details that matter to a restoration or a regular-use driver.

For a period-style 1958 Buick 50 Super, the natural starting point is the 760-15 bias-ply fitment. That keeps the vintage numeric size and the traditional construction associated with the car’s era, while still leaving room to choose among several whitewall widths and bias-ply series.

The final decision usually comes down to how the Buick is being finished and used. A restoration-oriented owner may place the most value on sidewall appearance and overall stance, while a driver-focused owner may also compare radial-equivalent options separately after confirming wheel compatibility and studying vehicle-specific historical references if exact originality matters.

Tire construction changes both the visual impression and the character of the fitment on a restored 1958 Buick 50 Super. A 760-15 bias-ply keeps the vintage size format and traditional profile associated with a late-1950s full-size American car, while radial alternatives introduce a different construction and sidewall presentation.

That difference is why many restorers settle on construction before they choose brand or whitewall width. A bias-look radial can bridge the gap for owners who want a more traditional appearance with a radial layout, but appearance goals, actual wheel dimensions, and the finished stance should all be considered together.

Yes, modifications can affect tire fitment on a 1958 Buick 50 Super even when the target size remains close to stock. Aftermarket wheels, different wheel widths, suspension changes, lowering, or body and brake alterations can all change how a 760-15 or a radial-equivalent tire sits in the car.

A Buick from this era may also have accumulated decades of changes that are not obvious at first glance. Measuring the actual wheel diameter and width, then checking steering travel and fender clearance, is especially important before moving from a bias-ply setup to any radial-equivalent size.

Before driving a 1958 Buick 50 Super on new tires, inspect the wheels for condition and correct size, then confirm the tires are mounted and inflated properly. It is also wise to check for suspension looseness, brake drag, uneven ride height, and any signs that the car may contact the tires at full steering lock or over bumps.

Collector cars often spend long periods parked, so tire installation should be part of a broader road-readiness check. Looking over valve stems, wheel hardware, alignment behavior, and initial clearance after the car is back on the ground helps catch issues early, especially on a large, heavy late-1950s Buick.

760-15 tires on a collector 1958 Buick 50 Super should be maintained with regular pressure checks, visual inspections, and attention to age-related deterioration. Even on low-mileage cars, sidewall cracking, flat spotting, cuts, bulges, and gradual air loss deserve attention because storage time can age a tire long before tread is worn.

Good storage habits matter as much as driving habits on a car like this. Keeping the Buick away from prolonged heat, sunlight, moisture, and ozone sources helps preserve the tires, and periodic movement or careful support during long storage can reduce stress on the casing and help the car stay road-ready.