1955 Lancia Tire Fitment Guide

1955 Lancia vehicles use four sizes across two models. The Appia uses either 155R15 radial or 560-15 bias-ply tires on 15-inch wheels, while the Aurelia uses 165-400 or 165R400 radial tires on 400mm wheels. Rim width guidance appears on the available products for several sizes: 155R15 commonly fits 4.00 to 5.50-inch rims, 560-15 appears on 4.5 or 4.50 to 5.50-inch rims, and 165R400 appears on ranges from 4.50 to 6.00 inches or 6.0 to 7.0 inches depending on the product.

The important takeaway is that year and make alone are not enough on a 1955 Lancia. An Appia owner can compare a 15-inch bias-ply fitment with a 15-inch radial fitment, but an Aurelia owner must stay with the car's 400mm wheel standard. Checking the actual wheel on the car is especially important on older European cars that may have seen wheel swaps during restoration or long-term ownership.

On a 1955 Lancia Appia, 560-15 is a numeric bias-ply size. The 5.60 figure is the nominal section width in inches, and the 15 is the wheel diameter in inches. That format belongs to the mid-century American and European bias-ply era, so it reads differently from later radial metric sizes such as 155R15.

Seeing 560-15 on an Appia usually points to a traditional-looking fitment with the visual stance and sidewall profile associated with period bias-ply tires. It is also the size with the greatest whitewall variety in the current offerings, including narrow and wide whitewall versions. If your Appia is being restored with strong attention to a 1950s look, this is the size most buyers consider first.

No, 1955 Lancia models do not all use the same tire size. The Appia uses 15-inch sizes, specifically 155R15 or 560-15, while the Aurelia uses millimetric 400mm radial sizes, specifically 165-400 or 165R400. Those are different wheel standards, so they are not interchangeable simply because the cars are from the same make and year.

That difference matters most when a car has been in storage for years or has passed through multiple owners, because the wheel equipment may not be what a buyer expects. Confirming the model name on the car is the first step, but confirming the wheel diameter is the second. On a 1955 Lancia, that extra check prevents the common mistake of comparing Appia 15-inch tires with Aurelia 400mm tires as if they belong in the same pool.

For a 1955 Lancia Appia, the choice between 155R15 and 560-15 is a choice between radial and bias-ply construction on the same 15-inch wheel diameter. The 155R15 options are all radials and are offered by Firestone and Michelin in blackwall form, while the 560-15 options are bias-ply tires from Firestone and US Royal with narrow and wide whitewall styles. That means the decision is less about wheel diameter and more about how you want the car presented and used.

A buyer leaning toward a period-style restoration will usually gravitate toward 560-15 because it keeps the Appia in a classic bias-ply format. A buyer who plans regular road use and prefers a radial construction will usually focus on 155R15. The best way to settle the choice is to decide whether originality of appearance or radial construction is the higher priority for your Appia before narrowing down brand and sidewall details.

Sidewall style varies significantly across 1955 Lancia tire sizes. The Appia's 155R15 radial offerings are blackwall only, while the Appia's 560-15 bias-ply offerings include both narrow whitewall and wide whitewall versions. On the Aurelia side, 165R400 radial products are available in blackwall and narrow whitewall styles, giving that model some visual choice while staying in the correct 400mm category.

For a mid-1950s Italian car, sidewall style affects the visual tone as much as the fitment itself. Blackwalls tend to suit understated European presentation, while whitewalls create a more stylized and period-specific look. A buyer comparing options for a 1955 Lancia should decide early whether the car is being finished as a restrained road car, a show-oriented restoration, or something in between, because that choice quickly narrows the field.

Three brands appear across the available 1955 Lancia sizes: Firestone, Michelin, and US Royal. Firestone and Michelin cover the Appia's 155R15 radial size, Firestone and US Royal cover the Appia's 560-15 bias-ply size, and Michelin covers the Aurelia's 165R400 radial size. Brand choice therefore depends partly on which Lancia model you own and partly on whether you want a radial or bias-ply construction.

Brand selection on a collector car is often about matching the tire's visual character and intended use to the personality of the car. A 1955 Lancia buyer with an Appia has the broadest spread because that model crosses both radial and bias-ply offerings, while Aurelia buyers remain in a Michelin-centered millimetric radial lane. Once the model and size are settled, brand choice becomes much easier and more meaningful.

Rim width guidance varies by size on 1955 Lancia applications. The 155R15 radial appears with a 4.00 to 5.50-inch rim width range, while 560-15 bias-ply products appear on either a fixed 4.5-inch rim or a 4.50 to 5.50-inch range depending on the brand. The Aurelia's 165R400 radial products show wider variation, with one product listing 4.50 to 6.00 inches and another listing 6.0 to 7.0 inches.

Those ranges are broad enough that the actual wheel on the car matters just as much as the nominal tire size. On a restored or long-owned 1955 Lancia, it is wise to measure the wheel and compare it to the specific tire you are considering rather than relying only on model identity. That step is especially important on the Aurelia, where millimetric wheels and differing listed rim-width ranges deserve a careful check.

Inner tube requirements vary by size and, in one case, by product on 1955 Lancia fitments. The Aurelia's 165R400 products are tube-type, and the Appia's 155R15 radial size includes both tube-type and tubeless products depending on the series. The 560-15 bias-ply listings do not carry TT or TL markers in the size field, so the buyer should confirm the exact tire's sidewall marking and wheel condition before finalizing setup.

That matters because tube use is not just a tire issue; it also depends on the wheel's design, sealing condition, and intended use. A 1955 Lancia owner should treat tube choice as part of the complete wheel-and-tire package, especially on older European wheels and millimetric applications. Verifying the sidewall marking on the exact product is the cleanest way to avoid mixing assumptions from one tire line into another.

A 1955 Lancia should be stored in a cool, dry, dark space away from direct sunlight, electric motors, battery chargers, welders, and other ozone sources that age rubber. Tires should be kept at proper inflation, and the car should either be moved periodically or supported in a way that reduces long static loading. On an Appia, bias-ply tires are generally more prone to taking a temporary flat spot during storage than radial tires, so regular movement helps.

Collector cars often sit longer than modern daily drivers, and tire care needs to reflect that reality. If the car will be parked for an extended season, make a habit of checking pressure and rolling it enough to change the contact patch. Clean, dry storage and avoiding prolonged sun exposure do more for long-term tire life on a 1955 Lancia than any cosmetic dressing ever will.

On a 1955 Lancia, tire age usually matters more than tread wear because these cars are often driven sparingly. A sensible rule is to begin evaluating tires closely once they are around five to seven years old and to consider replacement as they approach the ten-year mark, even if the tread still looks usable. The DOT date code, if present on the tire, is the key reference for age rather than mileage alone.

That approach keeps an older collector car from relying on rubber that looks acceptable at a glance but has hardened with time. Climate, storage conditions, and inflation habits all influence service life, so two sets of tires of the same age may not age the same way. For a 1955 Lancia that sees occasional touring, age-based replacement thinking is usually the safest and most realistic standard.

Tires on a 1955 Lancia should be inspected before every drive and again before any longer outing. Look for sidewall cracking, cuts, bulges, uneven wear, and signs that the tire has lost pressure since the last drive. If the car uses tube-type tires, add the valve stem area and the spare tire to the routine, because tube-related issues can stay hidden until the car is loaded for the road.

Frequent inspection is especially important on a collector car because time, storage, and inactivity can create problems that mileage does not reveal. A short local drive may not expose the same weakness that a sustained road run will. Making tire inspection part of every pre-drive check gives a 1955 Lancia owner a better chance of catching age-related issues before they become a roadside interruption.

A 1955 Lancia Appia would have been associated with period-correct bias-ply practice when new, and the currently available 560-15 bias-ply size aligns most closely with that era of fitment. Radial options in 155R15 are also available for the Appia today, but they represent a different construction approach from the traditional mid-1950s norm. Exact market, coachwork, and restoration-history details can influence what is considered correct on an individual car.

For a driver-level restoration, many owners simply decide whether they want a historically consistent bias-ply appearance or a radial alternative that still stays within the Appia's 15-inch wheel format. For judged authenticity, verify the expected size, construction, and sidewall style against original literature or a knowledgeable Lancia club. That extra research matters more on a specialized Italian car than on a mass-market domestic model.

Correct tire fitment absolutely matters when a 1955 Lancia is judged for originality. Size, construction type, and sidewall appearance all influence whether the car looks era-appropriate, and judges or marque experts will often notice if a bias-ply-era car is wearing a modern-looking alternative or if the sidewall treatment clashes with the intended presentation. On an Aurelia, keeping the proper 400mm millimetric wheel-and-tire standard is part of that authenticity picture as well.

The level of scrutiny depends on the event, but tire details are among the first visible clues that separate a careful restoration from a casual one. Owners pursuing concours-style accuracy should confirm what their specific event expects before choosing between blackwall, narrow whitewall, and wider whitewall options. A marque club or model specialist is often the best source for class-specific guidance on a 1955 Lancia.

For the 1955 Lancia Appia in 155R15, Michelin X and Michelin XAS are both radial choices, but they are not identical in specification. The Michelin X appears as 155R15 82T TL, making it a tubeless T-rated tire with a 118 mph speed ceiling, while the Michelin XAS appears as 155HR15 82H TT, making it a tube-type H-rated tire with a 130 mph ceiling. Both are blackwall tires and both share the same 15-inch rim diameter.

That distinction gives the Appia owner a more refined choice within the same nominal size. One product leans toward a more conventional metric radial specification, while the other combines a higher speed rating with tube-type construction. If you are narrowing the field between Michelin lines for a 1955 Lancia, compare the exact sidewall marking, tube requirement, and wheel setup instead of assuming all 155R15 options are interchangeable in every detail.

1955 Lancia tires can be suitable for highway use when the correct size, condition, and construction are matched to the car. The listed 165R400 Michelin products for the Aurelia carry an S speed rating, which corresponds to 112 mph, while the Appia's 155R15 radial products include T-rated versions to 118 mph and H-rated versions to 130 mph depending on the tire. The 560-15 Appia bias-ply products do not show a speed rating in the available specifications.

Real-world road safety on a 1955 Lancia depends on more than the tire's speed symbol. Brake condition, suspension wear, steering accuracy, and the car's overall mechanical state usually matter more than the tire's theoretical ceiling at normal U.S. highway speeds. A careful owner should view the tire as one part of a complete roadworthiness check, especially when preparing an older Italian car for sustained driving.

Inflation pressure on a 1955 Lancia should be matched to the exact tire size and product rather than guessed across the whole make. The listed 560-15 bias-ply products show a load-and-pressure figure of 970 pounds at 32 psi, and the Firestone 155R15 radial shows 1045 pounds at 44 psi. Those figures are product ratings, not a blanket recommendation to run every Appia or Aurelia tire at the same pressure.

The safest approach is to start with the car's original owner guidance or marque references for factory pressures, then compare that with the reproduction or radial tire manufacturer's information for the exact tire you are using. A 1955 Lancia can feel noticeably different with small pressure changes, especially on narrow tires. Never transfer a pressure figure from a 15-inch Appia tire to a 400mm Aurelia tire or from bias-ply to radial without checking first.

Before a longer drive in a 1955 Lancia, inspect every tire for cracking, cuts, bulges, irregular wear, and stable air pressure, then check the spare as carefully as the four on the car. If your Lancia uses tube-type tires, pay extra attention to valve stems and any signs of slow leakage. Wheels should also be checked for damage or corrosion, especially on older European rims that may have seen long storage or prior restoration work.

That tire inspection should sit within a broader pre-trip routine that includes brakes, steering, fluids, lights, and cooling-system readiness. Older touring cars and sports sedans often reveal weak points only after they have been driven at sustained speed for an hour or more. A measured inspection before departure makes a 1955 Lancia far more enjoyable on the road and reduces the odds that a small tire issue becomes the trip's defining event.