1956 Lancia sat at the refined end of the European market, building technically sophisticated cars that appealed to drivers who valued engineering as much as style. In this period, Lancia’s lineup stretched from the compact Appia to the more prestigious Aurelia and the newly introduced Flaminia, so tire selection was not one-size-fits-all across the make. Three tire sizes appear across these three models, with the Appia using a 15-inch metric radial while the Aurelia and Flaminia use millimetric 400-series sizes in two radial formats. The first step is to confirm your exact model and wheel standard, because that determines whether you need a 15-inch fitment or a 400mm fitment.
Which Tire Size Is Right for Your 1956 Lancia
Three tire sizes are available for 1956 Lancia vehicles, and they vary by model rather than being shared across the full range. The main decision is confirming whether your car uses a 15-inch wheel or a 400mm wheel first, then choosing the exact radial size that matches that wheel standard. Understanding that distinction before choosing a product saves time and helps ensure the right match.
Year(s): 1956|Fit(s): Appia|Construction: Radial|Rim: 15 in
155R15 is a metric radial size with a nominal section width of 155 millimeters and a 15-inch rim diameter, using the older Euro-metric convention that typically implies an 80-series profile. This size is specific to the Appia rather than universal across 1956 Lancia models, and it is offered in Firestone and Michelin lines with blackwall styling; tube fitment and speed rating vary by product, with Michelin offerings including T-rated 112 mph and H-rated 130 mph versions in both TT and TL forms. It suits Appia owners who want the correct size family for that model while choosing among touring-oriented radial options with different construction details and speed markings.
165-400 is a millimetric radial size with a nominal section width of 165 millimeters and a 400mm rim diameter. This size is specific to the Aurelia and Flaminia and sits in the same fitment family as 165R400 for those models. It is the choice to research further if your Aurelia or Flaminia is built around the 400mm wheel standard and you are confirming which radial notation matches your wheel and intended tire offering.
165R400 is a Euro-metric radial size with a nominal section width of 165 millimeters and a 400mm rim diameter, with the unstated profile conventionally treated as an 80-series type. This size is specific to the Aurelia and Flaminia, and current offerings come from Michelin in both blackwall and narrow whitewall styles; the available products are tube-type and carry an S speed rating, or 112 mph. It is a strong match for owners of those larger Lancia models who need the correct 400mm radial fitment and want to choose between a plainer blackwall look or a more decorative period-style sidewall.
Three Lancia models are covered for 1956, and they do not all share the same tire size. The Appia uses a different wheel standard from the Aurelia and Flaminia, so identifying your exact model is the key first step before narrowing down tire options. Select a model below for model-specific fitment history and products.
1956 Lancia Appia
The Appia was Lancia’s compact, intelligently engineered sedan, known for bringing the marque’s advanced design thinking to a smaller-displacement car. Its tire fitment mounts on 15-inch wheels, which separates it clearly from the larger millimetric-fitment cars elsewhere in the 1956 Lancia range.
The Aurelia remains one of Lancia’s landmark postwar cars, admired for its engineering sophistication and elegant grand-touring character. Its tires mount on 400mm wheels, so the correct search path is through the millimetric radial sizes used on this model rather than the Appia’s 15-inch fitment.
The Flaminia arrived as Lancia’s new flagship direction, carrying a more modern, upscale identity within the brand’s mid-century lineup. Like the Aurelia in this fitment set, it uses 400mm wheels, making millimetric radial sizing the critical detail to confirm before choosing tires.
Six products are available across three tire sizes for 1956 Lancia vehicles. 155R15 includes four radial choices from Firestone and Michelin in blackwall form, while 165R400 includes two Michelin radial options in blackwall and narrow whitewall styles; confirm your size first, and note that tube status and speed ratings can vary between products within a size.
These FAQs cover the model-by-model size split within the 1956 Lancia range, how 15-inch and 400mm fitments differ, which brands and sidewall styles are offered, and what to check when maintaining or driving a lightly used collector car.
Size Basics & Fitment
What tire sizes fit 1956 Lancia vehicles?
1956 Lancia vehicles use three sizes across the model range: 155R15 for the Appia, plus 165-400 and 165R400 for the Aurelia and Flaminia. The Appia’s tires mount on 15-inch rims, while the Aurelia and Flaminia use 400mm rims. For 155R15 products, listed rim width ranges run from 4.00 to 5.50 inches where specified. For 165R400 products, listed rim width ranges run from 4.50 to 6.00 inches on one Michelin version and 6.0 to 7.0 inches on another.
That means year and make alone are not enough for a final choice on a 1956 Lancia. You need to identify whether you have an Appia or one of the larger 400mm-wheel cars first, then confirm the exact wheel on the car before selecting a tire. Aurelia and Flaminia owners should pay especially close attention to whether their wheels and existing tires are marked in millimetric sizing, because 400mm and 15-inch fitments are close enough to confuse buyers but are not interchangeable.
What does 155R15 mean on a 1956 Lancia tire?
On a 1956 Lancia, 155R15 is a Euro-metric radial size. The 155 indicates a nominal section width of 155 millimeters, the R identifies radial construction, and the 15 is the wheel diameter in inches. In this older European format, the aspect ratio is not printed in the modern way and is conventionally treated as an 80-series type. Within the 1956 Lancia range, that size belongs to the Appia.
That decoding matters because 155R15 tells you both the construction family and the wheel standard. It also helps explain why several products in that size can look similar at a glance yet differ in sidewall marking, speed rating, and tube type versus tubeless execution. If your Appia still has older tires fitted, compare the full sidewall code and wheel diameter before replacing anything, especially if the car has been restored or converted at some point in its life.
What does 165R400 mean on a 1956 Lancia tire?
On a 1956 Lancia, 165R400 is a Euro-metric radial size for a 400mm wheel. The 165 refers to a nominal section width of 165 millimeters, the R denotes radial construction, and the 400 identifies the rim diameter in millimeters rather than inches. That is the crucial distinction. Within the 1956 Lancia lineup, 165R400 is used on Aurelia and Flaminia models rather than the Appia.
The practical takeaway is that a 400mm wheel requires a true 400mm tire, not a 15-inch substitute chosen by approximation. Some buyers see the near-math relationship between 400mm and 15 inches and assume interchangeability, but that is not how proper tire fitment works. If your Aurelia or Flaminia uses this size family, inspect the wheel and tire markings carefully and stay within the millimetric system unless a knowledgeable specialist has already converted the car to another standard.
Buying the Right Tire
What sidewall styles are available for 1956 Lancia tires?
1956 Lancia tire offerings include blackwall styles in both 155R15 and 165R400, plus a narrow whitewall option in 165R400. The Appia’s available 155R15 products are all blackwall. For the Aurelia and Flaminia, 165R400 gives you a choice between a blackwall Michelin X-Stop and a narrow whitewall Michelin X Radial. That means sidewall appearance varies by size as well as by model.
For a buyer, the sidewall decision is usually about appearance and restoration character rather than basic compatibility. Blackwall tends to suit understated European presentation, while a narrow whitewall can complement a more formal mid-century look on larger touring cars. If authenticity matters for a show car, match the sidewall style to the car’s market presentation and the standards of the event you care about, since period-correct appearance can matter just as much as the right nominal size.
What brands make tires for 1956 Lancia vehicles?
Two brands appear in 1956 Lancia fitments: Firestone and Michelin. In 155R15 for the Appia, available products include a Firestone F560 radial and several Michelin choices, including the Michelin X, XAS, and XAS-FF. In 165R400 for the Aurelia and Flaminia, the currently listed options are Michelin products. Brand choice therefore depends partly on which model and size family your car uses.
That split is useful because it narrows the shopping field quickly. Appia owners comparing 155R15 tires can look across more than one brand and several Michelin series, while Aurelia and Flaminia owners in 165R400 are effectively deciding between Michelin versions with different sidewall treatments and rim-width ranges. Once your model and wheel diameter are confirmed, comparing brands becomes less about broad reputation and more about selecting the right construction details and appearance for your particular car.
What is the difference between Michelin X and Michelin XAS for a 1956 Lancia Appia?
For a 1956 Lancia Appia in 155R15, Michelin X and Michelin XAS differ in sidewall marking, tube status, and speed rating details. The Michelin X is listed as 155R15 82T TL, which makes it a tubeless radial with a T speed rating, or 112 mph. The Michelin XAS is listed as 155HR15 82H TT, which makes it a tube-type radial with an H speed rating, or 130 mph. Both mount on 15-inch rims, and where specified the XAS fits a 4.00 to 5.50-inch rim-width range.
That makes the choice more specific than simply picking any 155R15 tire. An owner should match not only size but also the intended wheel setup and sidewall marking preferences, especially on a car where originality and driving character both matter. If your wheels are set up for tube-type service or you want the higher speed marking, the XAS deserves a closer look. If your priority is a more straightforward tubeless 155R15 radial, the Michelin X follows a different path.
Fitting & Setup
What rim width do 1956 Lancia tires require?
Rim width requirements for 1956 Lancia tires vary by size and sometimes by product within the same size. In 155R15, listed products show a rim width range of 4.00 to 5.50 inches where that specification appears. In 165R400, one Michelin option is listed for 4.50 to 6.00 inches, while another is listed for 6.0 to 7.0 inches. Those ranges show that wheel compatibility needs to be checked at the product level, not just the size level.
That is especially important if your car has replacement wheels or if an earlier restoration changed the setup. Two tires carrying the same nominal size can still call for different wheel widths depending on construction and product design. Before choosing a tire, measure the wheel or confirm its width from the wheel stamping if possible. That extra step helps avoid a situation where the size code appears correct but the selected tire does not match the wheel as well as another option in the same size family.
Do 1956 Lancia tires require inner tubes?
Inner-tube requirements vary across 1956 Lancia tire options. In 155R15 for the Appia, some products are tubeless and some are tube-type. The Michelin X is marked TL, the Michelin XAS is marked TT, and the Michelin XAS-FF is marked TL, so tube status varies by product within that size. In 165R400 for the Aurelia and Flaminia, both listed Michelin products are marked TT, making them tube-type tires.
That means you should not assume every tire in a given 1956 Lancia size uses the same setup. The sidewall marking on the specific tire matters, and the wheel design matters too. If your car uses 400mm fitment, plan around tube-type service unless your exact product says otherwise. On an Appia, check the product specification and inspect the wheel condition carefully before installation, because choosing between TT and TL involves more than size alone.
Maintenance, Storage & Longevity
How should I store a 1956 Lancia when the tires are fitted?
A 1956 Lancia should be stored in a cool, dry, dark space with the tires kept away from direct sunlight, electric motors, battery chargers, and other ozone sources that accelerate rubber aging. Maintain inflation, keep the car off damp ground, and move it periodically so the tires do not sit in one loaded position for months at a time. Radial tires generally tolerate storage better than older bias-ply designs, but long static periods can still create flat-spotting and sidewall stress.
For longer layups, many collectors either roll the car occasionally or use stands to reduce continuous loading, while keeping the suspension appropriately supported. A fitted spare should be stored with the same care as the road tires, since it often gets ignored until it is needed. If your Aurelia or Flaminia uses tube-type 400mm tires, remember that storage condition affects the tube and valve area as well as the outer casing.
How long do tires on a 1956 Lancia typically last?
On a 1956 Lancia, tire age usually matters more than mileage because collector cars often see limited annual use. A sensible rule is to evaluate tires closely once they reach the five- to seven-year range and to treat around ten years from the manufacturing date as a serious replacement threshold even if tread depth still looks acceptable. The DOT date code on the tire helps establish age, and visible condition should always be considered alongside that date.
Older-looking tread with minimal wear can be misleading on a lightly used Appia, Aurelia, or Flaminia. Rubber hardens over time, internal materials age, and storage history can shorten useful life even when the car was rarely driven. If you are putting a dormant Lancia back on the road, make tire age one of the first checks rather than assuming low miles mean the tires are still serviceable for normal road use.
How often should tires on a 1956 Lancia be inspected?
Tires on a 1956 Lancia should be inspected before every drive and again before any longer outing. Look for sidewall cracking, bulges, embedded debris, tread separation, uneven wear, and slow pressure loss. If your car runs tube-type tires, inspect the valve stems and pay attention to any unexplained pressure drop that could point to tube or stem issues rather than tread damage alone.
A brief pre-drive inspection is especially important on collector cars because they may sit for weeks or months between outings. Problems that develop during storage can go unnoticed until the car is back on the road. For a long-distance event or tour, inspect the spare as carefully as the four road tires and verify pressures when the tires are cold so you start the trip with a consistent baseline.
Restoration & Authenticity
What tires were originally fitted to the 1956 Lancia Appia?
A 1956 Lancia Appia in this fitment group uses 155R15, and its available modern replacements are radial tires in that size family. By the mid-1950s, Lancia was among the more technically progressive European makers, so radial fitment is consistent with the period character of the marque. The exact original market specification can still vary with body style, destination market, and running changes, so the final word for a concours-level restoration often comes from factory literature or a marque club rather than generic year-make references.
For most restorers, the priority is matching the correct size family, wheel diameter, and visual presentation first. On an Appia, that means staying within the 155R15 radial family and then choosing the sidewall marking and tire series that best fit your goals. If your car is headed for judged events, verify whether the event expects strict period-correct construction and appearance or simply the proper size and general era look.
Does correct tire fitment matter for showing a 1956 Lancia?
Correct tire fitment matters on a 1956 Lancia because judges and knowledgeable enthusiasts notice size, construction type, and sidewall presentation very quickly. An Appia wearing the wrong wheel-diameter tire family, or an Aurelia or Flaminia wearing a non-millimetric substitute instead of the proper 400mm fitment, can stand out immediately. Sidewall style matters too, since blackwall and narrow whitewall create different period impressions and may not suit every model or event standard equally well.
For a show car, tire choice should support the car’s overall restoration story rather than simply fill the wheel opening. A touring-focused driver may accept a tire that prioritizes road manners, while a concours entrant will usually aim for the most era-appropriate appearance and fitment details possible. Event rules vary, so compare your planned tire choice against the standards used by Lancia clubs, concours organizers, and the judges who know the model best.
What tires were originally fitted to the 1956 Lancia Aurelia and 1956 Lancia Flaminia?
Within this fitment range, the 1956 Lancia Aurelia and 1956 Lancia Flaminia use 165-400 and 165R400 size families on 400mm wheels, and the available replacement products are radial tires. That millimetric sizing is an important part of the character of these larger Lancias and should not be treated as interchangeable with inch-based 15-inch fitments. Exact original-market presentation could vary, so marque references remain the best source when the goal is factory-level historical precision.
For restoration purposes, the key is to preserve the 400mm wheel standard and select a sidewall style that suits the car’s intended presentation. The available 165R400 choices include both blackwall and narrow whitewall looks, which can steer the car toward a more understated or more formal visual result. If the car is being judged, confirm whether your event cares most about construction type, exact sidewall treatment, or simply staying within the proper millimetric fitment family.
Safety & Road Use
Are 1956 Lancia tires safe for highway driving?
1956 Lancia tires can be appropriate for highway driving when they are the correct size, in sound condition, and used within their marked speed capability. The listed 155R15 options include T-rated tires at 112 mph and H-rated tires at 130 mph, while the listed 165R400 options are S-rated at 112 mph. Those ratings are comfortably above ordinary U.S. highway speeds. On a car of this era, the overall condition of brakes, suspension, steering, and wheel hardware is often just as important to highway confidence as the tire itself.
That means the safety question is not only about the speed symbol printed on the sidewall. A well-maintained Appia, Aurelia, or Flaminia on fresh, properly inflated tires is a very different proposition from the same car on aged rubber or neglected mechanicals. Before regular highway use, confirm tire age, inspect for visible damage, and make sure the rest of the chassis is ready for sustained driving at modern traffic speeds.
What inflation pressure should I use for 1956 Lancia tires?
Inflation pressure for a 1956 Lancia should be set with the vehicle maker’s recommendation and the tire maker’s limits both in mind. The listed Firestone 155R15 carries a maximum load of 1045 pounds at 44 psi, which is a tire rating point rather than a universal running-pressure instruction for every 1956 Lancia. Other listed products in these sizes do not all show a pressure figure in the same way, so one size or product should not be used to set another by assumption.
The practical approach is to start with the original owner’s manual or factory tire-pressure recommendation for your exact model, then confirm you remain within the tire manufacturer’s allowable range for the specific product fitted. Appia, Aurelia, and Flaminia models differ in size and wheel standard, so they should not all be inflated by a one-number rule. Check pressures cold and adjust only after confirming both the car specification and the tire sidewall or product literature.
What should I check before taking a 1956 Lancia on a longer drive?
Before taking a 1956 Lancia on a longer drive, inspect each tire for cracking, cuts, bulges, irregular wear, and proper cold inflation. Make sure the spare is usable, not just present, and verify that valve stems are in good condition, especially on tube-type 165R400 applications. A longer drive also calls for a quick check of wheel fastener security, steering feel, brake operation, and any signs that the car has been sitting long enough for rubber or hydraulic components to age.
That preparation matters because a collector car can appear ready while hiding issues that only show up under heat and distance. Tires are one of the easiest checkpoints and one of the most important. If anything about the tire age, pressure retention, or sidewall condition looks questionable, resolve it before the trip rather than after the car is already loaded and on the road. Good pre-drive habits are especially valuable on mid-century European cars that see occasional use.
