1963 Saab 92 & 93 Tires

The 1963 Saab 92 & 93 uses two primary tire sizes: 145R15 in radial construction and 5.20-15 in bias-ply construction. Both sizes are associated with this application and both are built for 15-inch wheels, so the main distinction is the tire type rather than a change in wheel diameter.

That means the first step is deciding whether the car should stay with a period-style bias-ply setup or use a radial tire in the correct 15-inch size. It is also wise to confirm the actual wheels on the car, especially if it has been restored or modified over the years, since wheel width and clearance still matter even when the nominal tire size is correct.

The tire fitments for the 1963 Saab 92 & 93 are built around a 15-inch rim diameter. Both the 145R15 radial and the 5.20-15 bias-ply size use that same 15-inch wheel diameter, which keeps the basic rim fitment consistent across the available tire choices.

Rim diameter is only part of the picture, though, because wheel width can influence which radial tire is appropriate. Some 145R15 products are intended for relatively narrow wheels, so it helps to measure the wheels actually on the car before choosing among available tires. That is especially important on collector vehicles that may no longer wear their original wheel set.

On a 1963 Saab 92 & 93, 5.20-15 is a numeric bias-ply tire size. The 5.20 figure refers to the nominal section width in inches, and the 15 refers to the wheel diameter in inches. It is an older sizing format that was common before modern metric radial sizing became the standard.

For a buyer, the practical takeaway is that 5.20-15 is tied to a traditional bias-ply construction and a vintage look. It should not be confused with a modern metric radial simply because both fit a 15-inch wheel. Construction, wheel width, and the car’s intended use should all be considered before choosing between this size and the radial alternative.

For the 1963 Saab 92 & 93, 5.20-15 is a bias-ply tire size. It uses the older numeric sizing format and represents the traditional construction choice for this application, while the radial alternative is the separate 145R15 size on the same 15-inch rim diameter.

That distinction matters because construction affects both appearance and how the tire should be selected for the car. A buyer keeping a more vintage presentation may focus on the bias-ply option, while someone planning more regular road use may compare the radial size instead. The wheel dimensions and the vehicle’s current setup should still be checked before making the change.

Both approaches can make sense on a 1963 Saab 92 & 93 because this application includes a 5.20-15 bias-ply size and a 145R15 radial size. The bias-ply option favors a more traditional period-style presentation, while the radial option gives access to modern radial construction in a narrow 15-inch format.

The right choice depends on how the car is being finished and used. A restoration-minded owner may prefer the visual character of a bias-ply tire, while a driver-focused owner may want to explore radial choices such as blackwall or wide whitewall offerings. Whichever route is chosen, the actual wheel width, tire clearance, and overall condition of the car should be reviewed first.

Before moving a 1963 Saab 92 & 93 from 5.20-15 bias-ply tires to 145R15 radials, start by confirming that the car still has 15-inch wheels that are suitable for the radial tire’s rim-width requirements. It also helps to confirm that the current wheels are in good condition and appropriate for the intended tire construction.

After that, check for clearance at the fenders and steering components, especially on a car with older suspension parts or any previous modifications. A radial conversion can also change the visual character of the car, so owners balancing road use and restoration appearance should think through both goals. When there is any doubt, a qualified tire professional should inspect the setup before installation.

Start with the correct size and construction for the way the 1963 Saab 92 & 93 will be used. The key choice is between the 5.20-15 bias-ply tire and the 145R15 radial tire, since both fit a 15-inch rim but serve different priorities in terms of appearance and tire design.

Once construction is settled, compare practical details such as sidewall style, tire series, and wheel-width suitability. A radial buyer can also look at brand differences and whether a blackwall or wide whitewall best fits the car’s presentation. Choosing carefully matters on a small vintage Saab because narrow tires influence both the stance of the car and how authentic the finished look feels.

For the 1963 Saab 92 & 93, available 145R15 radial products include both blackwall and wide whitewall sidewall styles. Blackwall choices appear in Firestone and Michelin offerings, while a BFGoodrich Silvertown Radial is available with a wide whitewall treatment for buyers who want a more decorative period-inspired look.

That sidewall decision is mainly about appearance rather than basic fitment, but it can change the overall personality of the car. A blackwall generally keeps the presentation simple and understated, while a wide whitewall gives the Saab a more dressed-up vintage look. The final choice should still stay within the correct tire size and be checked against the actual wheel setup.

Radial tire options in 145R15 for the 1963 Saab 92 & 93 are available from Firestone, Michelin, and BFGoodrich. Those brands appear across several tire series, including Firestone F560 Radial, Michelin XZX, and BFGoodrich Silvertown Radial, giving the buyer a useful spread of styling and specification differences within the same basic fitment.

Brand choice should be considered alongside the rest of the tire’s details rather than in isolation. The sidewall treatment, the tire series, and the wheel-width range may all influence which option makes the most sense for the car. Since this Saab uses a relatively narrow 15-inch tire, checking those dimensions is just as important as picking the name on the sidewall.

A period-style 1963 Saab 92 & 93 usually starts with the 5.20-15 bias-ply size, since that construction and numeric sizing format align closely with the character of an early 1960s small car. The 145R15 radial can also suit the car visually, but it represents a more modern construction choice even when kept in a narrow 15-inch size.

The best direction depends on whether the goal is historical appearance, regular road driving, or a balance of both. Bias-ply construction tends to support a more traditional visual presentation, while radial products open up additional brand and sidewall choices. When exact originality matters, the tire selection should also be compared with marque-specific restoration references for the particular car.

Tire construction can noticeably change the look of a restored 1963 Saab 92 & 93 even when both choices fit a 15-inch wheel. A 5.20-15 bias-ply tire gives the car a distinctly vintage presentation, while a 145R15 radial keeps the tire narrow but introduces a more modern sizing and construction style.

That visual difference matters on a compact car where tire proportion is easy to notice. A restoration-minded owner may lean toward the bias-ply option to preserve an earlier feel, while a radial with blackwall or wide whitewall styling may better suit a driver-oriented build. The appearance choice should be made alongside wheel compatibility and the intended use of the car, not separately from them.

Yes, modifications can affect tire fitment on a 1963 Saab 92 & 93 even when the tire size itself is correct. Changes such as aftermarket wheels, altered wheel width, suspension work, or body and fender adjustments can all influence how a 145R15 or 5.20-15 tire sits and clears the car.

That is why a collector car should be checked as it exists today rather than assumed to match its original configuration. Measure the wheel diameter and width, look at steering and fender clearance, and inspect how much room the tire has through its full range of movement. Small vintage cars can be especially sensitive to changes that seem minor on paper.

Before driving a 1963 Saab 92 & 93 on new tires, inspect the wheels for damage or corrosion, confirm the tire size and construction are correct, and make sure the tires seat properly on the rims. It is also smart to check valve stems, verify inflation pressure, and look over the suspension and steering for obvious wear.

A short, careful test drive is a sensible next step after installation. Listen for rubbing, watch for any pull or vibration, and recheck pressure once the tires have been driven. On an older Saab, it is also worth confirming that nothing in the wheel wells, steering linkage, or brake area interferes with the new tires as the car settles into use.

Tires on a collector 1963 Saab 92 & 93 should be inspected regularly for cracking, bulges, cuts, uneven wear, and slow air loss, even if the car is driven only occasionally. That applies to both 145R15 radials and 5.20-15 bias-ply tires, since age and storage conditions matter as much as mileage on low-use vintage vehicles.

Proper inflation, clean storage, and periodic movement of the car all help preserve tire condition. It also helps to keep the Saab away from prolonged sunlight, excess heat, moisture, and ozone sources when stored. Before any longer drive, give the tires a close visual check and confirm that the wheels, lug hardware, and surrounding suspension parts remain in sound condition.