1958 Pontiac Star Chief Tires

The 1958 Pontiac Star Chief uses two primary tire sizes: 800-14 and 850-14. Both are bias-ply sizes built for 14-inch rims, and the Star Chief Base can use either size depending on the car’s actual wheel and tire setup.

That means the right choice is not based on model name alone. Checking the size already on the car, confirming wheel width, and making sure the replacement matches the intended appearance are the important next steps. A car restored around a narrower tire may call for a different selection than one already running the wider 850-14 fitment.

The tire fitments used on the 1958 Pontiac Star Chief are designed for 14-inch rims. Both 800-14 and 850-14 share that same rim diameter, so the diameter itself stays consistent even though the two tire sizes differ in nominal width.

Rim diameter is only part of the fitment picture, though. It is still worth confirming the actual wheel width before choosing a tire, especially if the car has been changed over the years. A 14-inch wheel can still vary enough in width to affect which tire works best and which radial-equivalent options deserve a closer look.

The 1958 Pontiac Star Chief has more than one tire size because both 800-14 and 850-14 are recognized primary fitments for this model. They share the same 14-inch rim diameter, but the 850-14 is a wider numeric bias-ply size than the 800-14.

For the owner, that means the vehicle should be treated as a confirm-before-you-buy fitment rather than a one-size situation. Looking at the tire currently on the car, checking the wheel dimensions, and accounting for any past restoration or wheel changes will point you toward the correct size far more reliably than choosing only by year, make, and model.

On the 1958 Pontiac Star Chief, 800-14 is a primary bias-ply tire size. It uses the vintage numeric sizing system and remains the traditional construction choice for owners who want the car to retain its period-style tire presentation.

Radial alternatives exist for owners considering a different construction, but they should be treated as equivalents rather than automatic substitutions. Keeping bias-ply construction usually supports a more traditional look, while a move to radial sizing calls for a closer check of wheel width, overall proportions, and clearance at the fender and steering points.

Radial equivalents for 800-14 include 205R14 as an 80-series metric radial, P215/75R14 as a 75-series P-metric radial, P225/70R14 as a 70-series P-metric radial, and 800R14 as a bias-look radial. These give the 1958 Pontiac Star Chief several different radial-format options tied to the same primary bias-ply size.

Each equivalent follows a different sizing convention, so the choice is not only about construction. The recommended rim-width range is 5 to 7 inches, and the actual car should still be checked for wheel compatibility and body clearance. That is especially important on a large 1950s car that may have seen wheel changes or suspension work during its life.

That choice depends on what matters most for the car. The primary fitments for a 1958 Pontiac Star Chief are bias-ply 800-14 and 850-14 tires, which preserve the original sizing style and traditional visual character, while radial equivalents offer an alternate construction path in comparable sizing formats.

A restoration-focused car often stays with bias-ply for appearance, especially when whitewall style is part of the presentation. A more road-driven car may lead you to explore radial equivalents instead. Either way, the decision should include a check of rim width, wheel condition, and available clearance rather than assuming every equivalent will suit every Star Chief setup.

Start with the basic fitment decision: whether the car needs 800-14 or 850-14. Both are 14-inch bias-ply sizes, but they differ in nominal width, so the best choice depends on the wheel setup already on the car and the look you want to maintain.

After size is confirmed, compare construction style, sidewall treatment, and the product family available in that size. Whitewall width can strongly influence the car’s finished appearance, especially on a late-1950s Pontiac. Wheel width should also be checked carefully, particularly if the car has gone through restoration, replacement wheels, or any previous fitment changes.

The available sidewall styles for 1958 Pontiac Star Chief tires include blackwall, narrow whitewall, and wide whitewall, depending on the size and product selected. In 800-14, there is the broadest range of presentation choices, while 850-14 options center on narrow whitewall and wide whitewall styles.

That makes sidewall style one of the biggest visual decisions on this car. A blackwall can create a more restrained look, while whitewalls push the Star Chief toward a more formal late-1950s presentation. Once the correct tire size is confirmed, sidewall treatment becomes one of the clearest ways to align the tire with the car’s restoration goals.

BFGoodrich, Goodyear, and Universal Vintage Tire all offer tires for the 1958 Pontiac Star Chief, although brand availability depends on the tire size selected. The 800-14 fitment has the widest brand spread, while 850-14 choices are available from BFGoodrich in the current product mix.

Brand matters mainly as part of the overall selection process, not as a shortcut to the right tire. It is more useful to compare each option by size, sidewall style, series, and wheel compatibility. On a collector car like the Star Chief, appearance and fitment details usually influence the final choice just as much as the name on the sidewall.

A period-style 1958 Pontiac Star Chief usually starts with one of its primary bias-ply sizes, 800-14 or 850-14, rather than jumping immediately to a modern radial format. That keeps the car in its original sizing language and preserves the tall, traditional visual character associated with full-size late-1950s American cars.

From there, the right choice depends on how the car is being finished. Whitewall width has a major effect on presentation, and the available products include narrow and wide whitewall treatments in these sizes. If absolute originality matters, marque-specific references and restoration records are the best final check before choosing a particular sidewall look.

Tire construction changes more than the way the car drives; it also changes how a restored 1958 Pontiac Star Chief looks at a glance. Bias-ply tires preserve the vintage sizing format and traditional sidewall shape most closely associated with the car’s era, while radial alternatives can alter the visual character even when they are chosen as equivalents.

That difference is especially noticeable on a large 1958 Pontiac where wheel openings, trim, and whitewall style all play into the finished look. Owners focused on a restoration-oriented presentation often begin with bias-ply options first, then decide whether a radial equivalent still supports the appearance they want after checking the wheel and stance of the car.

Yes, modifications can affect tire fitment on a 1958 Pontiac Star Chief even when the tire size itself is correct. Aftermarket wheels, changes in wheel width, suspension work, ride-height changes, or brake conversions can all influence how an 800-14, 850-14, or a radial equivalent sits on the car.

That is why a modified Star Chief should be checked as an individual setup. Steering clearance, fender space, and wheel dimensions all matter before settling on a replacement tire. A car that has been lowered or fitted with different wheels may need more careful measuring than one that still retains its original-type wheel arrangement.

Before driving a 1958 Pontiac Star Chief on new tires, inspect the wheels for the correct diameter and sound condition, confirm proper inflation, and make sure each tire has adequate clearance at the fenders and steering points. It is also smart to look over suspension and steering components on any long-stored collector car.

A fresh set of tires cannot compensate for worn mechanical parts or damaged wheels. After installation, recheck air pressure, watch for any rubbing during slow turning, and pay attention to how the car tracks during the first miles. Collector cars that have seen limited use often benefit from a careful shake-down before regular road driving.

Collector-car tires in 800-14 or 850-14 size should be maintained with regular pressure checks, visual inspection, and clean storage conditions. On a 1958 Pontiac Star Chief that sees limited mileage, sidewall cracking, flat spotting, cuts, bulges, and slow air loss can become more important concerns than tread wear alone.

Storage habits matter just as much as driving habits on a car of this age. Keeping the Star Chief away from prolonged sunlight, excess heat, and ozone sources can help preserve the tires, and periodic inspection remains important even when the car is not driven often. Any sign of age-related deterioration deserves attention before the next road outing.