1963 Saab Tire Fitment Guide

1963 Saab vehicles use four tire sizes across three model groups: 155R15 for the 750 & 850 GT and Saab 96, 145R15 for the Saab 92 & 93, 5.20-15 for the Saab 92 & 93, and 560-15 for the Saab 96. Every one of those sizes mounts on a 15-inch wheel. Where rim-width guidance is available, 155R15 works with 4.00 to 5.50-inch rims, 145R15 with 3.50 to 5.00-inch rims depending on the tire, and 560-15 with 4.50 to 5.50-inch rims depending on the brand.

The practical takeaway is that a 1963 Saab owner needs the exact model before choosing a tire, because the year and make alone are not enough. Once the model is confirmed, the next step is deciding whether you are staying with a bias-ply size for a more original presentation or choosing a radial where that model allows it. Wheel diameter stays simple at 15 inches, but rim width still needs to match the specific tire.

On a 1963 Saab, 145R15 is a Euro-metric radial size. The 145 is the nominal section width in millimeters, the R identifies radial construction, and the 15 is the wheel diameter in inches. In this older metric format, the aspect ratio is not printed as part of the code and is generally understood as an 80-series profile. For 1963 Saab applications, this size belongs to the Saab 92 & 93.

That code matters because it tells you this is a relatively narrow radial meant for a 15-inch wheel, not an interchangeable stand-in for the wider 155R15 used on other 1963 Saab models. It also points you toward the right type of tire behavior: a radial carcass, modern metric sizing, and a fitment that suits the proportions of the earlier 92 and 93. Before ordering, compare the actual sidewall marking on the car to the wheel it is mounted on.

On a 1963 Saab, 560-15 is a traditional numeric bias-ply size. The 560 is the period inch-based section-width code and the 15 is the rim diameter in inches. This size is used on the Saab 96, not on the full 1963 Saab lineup, and it reflects the older sizing language that was common before metric radial markings became widespread.

Understanding that code helps prevent mixing two very different types of fitment thinking. A 560-15 is not just another way of writing 155R15; it belongs to a different sizing system and to bias-ply construction. For a Saab 96 owner, that usually means deciding whether the car is being restored toward a more period-authentic appearance or set up around a radial alternative that keeps the same 15-inch wheel diameter but changes the tire's construction and character.

For a 1963 Saab, that choice applies specifically to the Saab 96. The 155R15 is a radial metric size, while the 560-15 is a numeric bias-ply size, and both mount on 15-inch wheels. The radial side includes Firestone and Michelin blackwall options, while the 560-15 bias-ply side is available from Firestone and US Royal with narrow whitewall and wide whitewall styling.

The decision usually comes down to what you want the car to be. A Saab 96 restored with a stronger emphasis on period appearance and mid-century tire character often points toward 560-15 bias-ply, while a car that will see more routine road use often points toward 155R15 radial construction. Either way, confirm the wheel width before choosing, because the shared 15-inch diameter does not make every wheel automatically suitable for every tire.

1963 Saab tires appear in more than one sidewall style, but the choices depend on size. The 155R15 radial options are blackwall only. The 145R15 radial size appears in both blackwall and wide whitewall form, while the 560-15 bias-ply size is available with narrow whitewall and wide whitewall styling. That means the sidewall look changes not just by preference, but by the exact tire size your Saab uses.

For a buyer thinking about authenticity, sidewall choice should match the character of the car and the restoration goal rather than being treated as a generic styling add-on. Earlier small European cars were often seen with simple blackwalls, while whitewall treatments can create a more period-custom or market-specific presentation. If show judging matters, confirm what is appropriate for your model, delivery market, and event standard before choosing a whitewall width.

Five brands cover 1963 Saab fitments across the available sizes: Firestone, Michelin, BFGoodrich, US Royal, and Firestone appears in multiple sizes. The 155R15 radial size is available from Firestone and Michelin. The 145R15 radial size is available from Firestone, Michelin, and BFGoodrich. The 560-15 bias-ply size is available from Firestone and US Royal.

Brand choice often follows the direction of the car. A buyer focused on European-style radial fitment for a Saab 96 or 92/93 may naturally compare the Michelin and Firestone offerings in the metric sizes, while someone restoring a 96 with a period bias-ply look may spend more time comparing Firestone and US Royal in 560-15. Once the correct size is established, compare sidewall appearance, rim-width compatibility, and any speed or tube markings shown on the tire itself.

Rim-width guidance for 1963 Saab tires varies by size. In 155R15, the supported rim-width range reaches 4.00 to 5.50 inches. In 145R15, the range spans 3.50 to 5.00 inches depending on the tire. In 560-15, examples include 4.50-inch fitment and a broader 4.50 to 5.50-inch range depending on brand. All of those tires use a 15-inch rim diameter, but width compatibility is not the same across the sizes.

That matters because an owner can have the right diameter wheel and still have the wrong width for the tire they want to run. Before choosing between a radial and a bias-ply option, measure the wheel or verify it through a trusted Saab source. This is especially important on older cars that may have had wheels changed at some point in their lives, even when the outside appearance still looks original.

Tube requirements on 1963 Saab tires depend on the exact size and product. In 155R15, tube status varies by product, with both tube-type and tubeless versions present. In 145R15, tubeless examples appear in the available radial offerings. The 560-15 products here do not carry tube markers in the size line, so the sidewall marking on the specific tire should be checked before final installation.

That variation is important because older wheels, older valve-stem arrangements, and tire construction all influence how the assembly should be built. A 155R15 buyer cannot assume every version is mounted the same way just because the nominal size matches. If your Saab still uses original wheels, confirm the tire's TT or TL marking and inspect the wheel condition carefully so the installation method matches both the tire and the wheel.

Original 1963 Saab wheels can only be used with all 1963 Saab tire sizes in the broadest sense that every size here fits a 15-inch rim. That shared diameter is helpful, but it does not make every 15-inch wheel interchangeable across 145R15, 155R15, 5.20-15, and 560-15. Rim width changes by size, and the model itself still determines which tire family belongs on the car.

The smart approach is to treat wheel diameter and wheel width as separate checks. A Saab 92 or 93 owner comparing 145R15 and 5.20-15 should confirm the wheel width before assuming both are equally appropriate, and a Saab 96 owner making the 155R15-versus-560-15 decision should do the same. Original-looking wheels may also have been swapped over the years, so a quick measurement is worth more than relying on appearance alone.

A 1963 Saab should be stored in a cool, dry, dark environment away from direct sunlight, electric motors, battery chargers, furnaces, and other ozone-producing equipment that can accelerate sidewall aging. Keep the tires properly inflated, avoid prolonged contact with standing moisture, and move the car periodically so the carcass is not loaded in one position for months at a time. Bias-ply tires tend to flat-spot more readily during long static storage, while any older collector tire can suffer from cracking if left in a poor environment.

For a car that sits through a winter or a long off-season, many owners also use tire cradles or place the vehicle on stands to reduce static loading, especially if the tires are bias-ply. The goal is not just preserving tread, but preserving the casing and sidewall condition that matter far more on a lightly driven collector Saab. Storage habits often affect tire life as much as actual road mileage does.

On a 1963 Saab, tire life is usually judged more by age than by mileage. A collector tire should be evaluated carefully once it reaches the five-to-seven-year range, and replacement moves into serious consideration as it approaches ten years, even if the tread still looks deep. The DOT date code on modern reproduction tires gives the manufacturing week and year, which is a better guide than appearance alone on a low-use car.

That age-first approach matters because classic Saabs are often driven sparingly, and tires can harden, crack, or lose flexibility long before they wear out. A radial can still look serviceable while aging internally, and a bias-ply tire can keep an attractive period look while becoming less trustworthy. If the car's history with the current tires is uncertain, treating age as the deciding factor is usually the safer path.

Tires on a 1963 Saab should be inspected before every drive and again before any extended outing. Look for sidewall cracking, tread separation, unusual wear, cuts, bulges, and pressure loss. If the tire is tube-type, valve-stem condition and any signs of slow leakage deserve extra attention, because tube and valve issues can show up before obvious tread problems appear.

A short local drive may forgive a tire issue that becomes serious on a highway run or a long event weekend, so inspection frequency should be tied to use, not just the calendar. Pay attention to changes in steering feel, vibration, or a pull that was not there previously, especially on a light front-wheel-drive car like a 1963 Saab. Small changes in behavior can be the first warning that a tire needs closer examination.

For a 1963 Saab Saab 96, bias-ply construction would have been historically appropriate in period, and the 560-15 size reflects that earlier fitment style. At the same time, the Saab 96 also appears with 155R15 radial fitment in this year, which aligns with Saab's place in a European market where radial adoption was becoming increasingly important. That means construction choice can depend on the exact version of the car, market context, and the owner's restoration target.

If originality matters, treat 560-15 bias-ply as the stronger period-correct starting point and use 155R15 radial only after checking the car's history and intended presentation. A concours-level restoration should also consider whether a blackwall, narrow whitewall, or wide whitewall suits the event standard and the car's market background. For market-specific confirmation, Saab marque clubs and period literature remain the best final check.

Correct tire fitment matters on a 1963 Saab because judges and knowledgeable enthusiasts often notice size, construction type, and sidewall appearance very quickly. A Saab 92 or 93 wearing a radial size that does not match the intended restoration approach can change the car's visual stance, just as a Saab 96 wearing a whitewall style that does not suit the car's presentation can look out of step. Bias-ply versus radial is often one of the first authenticity choices people see.

For show purposes, the safest path is to match the tire not only to the model but also to the standard of the event. Local shows may be more forgiving, while marque judging and higher-level concours events may look more closely at construction and sidewall treatment. If your goal is serious competition, confirm what is accepted by the event organizers or a Saab specialist before the tire choice becomes an expensive correction later.

For a 1963 Saab using 560-15 bias-ply tires, Firestone and US Royal share the same basic size, 15-inch rim diameter, and a 970-pound load rating at 32 psi in the examples here. Both brands offer narrow whitewall and wide whitewall versions. The clearest technical difference is rim-width guidance: Firestone centers on a 4.5-inch rim, while US Royal spans 4.50 to 5.50 inches. Weight also differs slightly, with Firestone at 18 pounds and US Royal at 17 pounds.

In practical terms, the choice is less about one being universally superior and more about how the tire matches your wheel and the visual look you want. If your Saab's wheel width sits near the wider end of the range, that broader US Royal compatibility may be useful. If your wheel is a straight 4.5-inch setup and you prefer the Firestone appearance, that may guide the decision instead. Measure the wheel before choosing between the two.

1963 Saab tires can be appropriate for highway use when they are the correct size, in sound condition, and matched to the way the car is actually driven. Among the radial sizes, examples include S-rated tires with a 112 mph ceiling, T-rated tires with a 118 mph ceiling, and H-rated tires with a 130 mph ceiling. Those ratings are comfortably above normal highway speeds, but the car's age, braking ability, suspension condition, and overall mechanical health matter just as much as the tire's speed symbol.

For most owners, the bigger safety issue is not whether a reproduction tire can survive interstate speed, but whether a 1963 Saab is fully prepared for sustained modern traffic. Tire age, inflation, wheel condition, and alignment all matter, and bias-ply tires may feel different from radials at speed even when both are operating within their intended range. A well-sorted car on fresh, correctly chosen tires is the real goal before planning longer highway use.

Inflation pressure on a 1963 Saab should not be guessed from another size in the lineup. The 155R15 radial examples include a maximum load figure of 1045 pounds at 44 psi, the 145R15 radial examples reach 935 pounds at 44 psi, and the 560-15 bias-ply examples reach 970 pounds at 32 psi. Those figures are tire ratings, not blanket recommendations for every Saab application.

The best approach is to start with the factory pressure guidance for your exact model and then compare it with the tire manufacturer's rating for the specific reproduction tire you are using. A maximum-rated pressure is there to define the tire's load capability, not to tell you what every car should run on the road. Keeping the pressures appropriate to the tire and the vehicle will affect ride quality, tread wear, and straight-line stability.

Before taking a 1963 Saab on a longer drive, inspect each tire for cracking, cuts, bulges, tread irregularity, and any signs of air loss. Check pressures cold, examine the valve stems, and make sure the spare is inflated and serviceable. If your tire uses a tube-type construction, the stem condition and any evidence of creeping or leakage deserve extra attention. Wheel condition matters too, especially on an older car that may still be wearing original or long-ago replaced rims.

Tires are only one part of the pre-drive routine on a 1963 Saab, but they are the one part actually touching the road. A light, front-wheel-drive Saab can mask small problems until distance, speed, or weather makes them more obvious, so a quick visual check is not enough before a road trip. Plan a fuller inspection that also includes brakes, steering, fluids, and charging system health so the tire choice has a properly prepared car under it.