1952 Lancia Tire Fitment Guide

1952 Lancia vehicles covered here use two tire sizes, 165-400 and 165R400, and both apply to the Aurelia. Both are radial millimetric fitments built around a 400mm wheel diameter rather than a conventional 15-inch or 16-inch rim. For 165R400 products, the available rim-width ranges are 4.50 to 6.00 inches on one Michelin option and 6.0 to 7.0 inches on another, so wheel width matters as much as diameter.

That means the first job is not choosing between different Lancia models, but confirming which size marking belongs on your particular Aurelia and whether the wheel width suits the tire you want. Once the correct size is established, the next choice becomes product style, especially if you are deciding between a blackwall look and a narrow whitewall presentation.

On a 1952 Lancia, 165-400 is a millimetric radial size. The 165 refers to the nominal section width in millimeters, and the 400 refers to the wheel diameter in millimeters. Even though the size is written with a dash instead of an R, it appears in the 1952 Lancia application as a radial fitment tied specifically to the Aurelia.

That older European style of sizing can be confusing if you are more familiar with modern inch-based or P-metric sizes. Treat 165-400 as a distinct millimetric fitment, not as something interchangeable with a similarly sized inch-rim tire. On an Aurelia restoration, matching the sidewall marking style to the car’s expected fitment can be just as important as matching the basic dimensions.

On a 1952 Lancia, 165R400 means a tire with a nominal 165-millimeter section width, radial construction indicated by the R, and a 400-millimeter wheel diameter. The available 165R400 tires for the Aurelia carry an 87S marking and are tube-type. In practical terms, it is a classic European millimetric radial rather than a later inch-based radial size.

That matters because a 400mm wheel is its own fitment standard, and the R in the size confirms the construction style many collectors expect on this kind of postwar Italian touring car. If your car is already fitted with 165R400 tires, check the full sidewall marking and wheel dimensions before changing brands or sidewall style so you stay within the intended fitment range.

For a 1952 Lancia Aurelia, the choice between 165-400 and 165R400 is mainly about matching the correct millimetric size marking to the car and wheel rather than choosing between bias-ply and radial construction, because both sizes are radial and both use a 400mm rim diameter. The 165R400 fitment has current Michelin product coverage, while 165-400 serves as a closely related application reference within the same model line.

A buyer restoring a car for authenticity should start by verifying what size marking belongs on that specific Aurelia, especially if the car has a strong preservation history. A driver-focused owner should still confirm the exact wheel and size before settling on sidewall appearance, because getting the millimetric fitment right matters more here than making a broad construction-type choice.

1952 Lancia Aurelia tires in 165R400 are available in both Blackwall and Narrow Whitewall form. Michelin offers one version as a blackwall and another as a narrow whitewall, giving owners a choice between a more restrained European look and a slightly dressier presentation. Both are radial, tube-type 165R400 tires built for 400mm wheels.

That choice usually comes down to the visual character you want from the car. A blackwall generally suits a clean, understated touring appearance, while a narrow whitewall can better complement a formal restoration or a period presentation where a little extra sidewall detail looks appropriate. Sidewall style does not replace the need to verify the correct size and wheel match first.

Michelin is the brand represented in the available 1952 Lancia Aurelia fitment offerings here. The 165R400 size is offered in Michelin X Radial and Michelin X-Stop form, both using radial construction and both intended for the Aurelia’s 400mm wheel fitment. That keeps the brand choice focused, but still leaves room to choose between different visual presentations and wheel-width ranges.

For an owner of a technically sophisticated Italian car from the early 1950s, Michelin is a sensible match because the brand is closely associated with classic European radial development. The practical decision is less about comparing many manufacturers and more about selecting the Michelin version that best matches your wheel width, preferred sidewall appearance, and the way you intend to present the car.

1952 Lancia Aurelia tires in 165R400 are offered with two different rim-width ranges depending on the product. One Michelin option is intended for 4.50 to 6.00 inch rims, while another is intended for 6.0 to 7.0 inch rims. Both still use the same 400mm wheel diameter, so width compatibility is the detail that separates one product choice from another.

That is why wheel diameter alone is not enough when choosing a tire for an Aurelia. Measure the wheel you are actually using, or confirm it through a trusted restoration source, before settling on a particular 165R400 tire. Staying inside the stated rim-width range helps preserve the tire’s intended shape and keeps the fitment aligned with the manufacturer’s recommendation.

The available 165R400 tires for 1952 Lancia Aurelia models are tube-type, identified by the TT marking in the size description. That applies to both currently listed Michelin 165R400 offerings. On a classic millimetric European fitment like this, tube-type construction is an important part of the setup rather than a minor detail.

When replacing tires, check that the tube, valve stem, and rim condition are all appropriate for the application instead of focusing only on the outer casing. A fresh tire mounted with an aged tube or questionable valve hardware can create avoidable trouble. If your Aurelia has been restored, it is wise to confirm the complete wheel-and-tube arrangement before putting the car back into regular service.

Because both 165-400 and 165R400 are built around a 400mm wheel diameter, original 1952 Lancia Aurelia wheels can often be used with either size family once the exact fitment is confirmed. Diameter compatibility is the shared feature here. The remaining question is whether the wheel width matches the tire you intend to run, since 165R400 products have specific width ranges.

That makes the original wheel a good starting point, but not the end of the verification process. A car that has changed hands, been restored long ago, or been fitted with replacement wheels deserves a direct measurement before mounting tires. On European collector cars, a small assumption about wheel specification can easily lead to the wrong tire selection.

A 1952 Lancia should be stored in a cool, dry, dark space with the tires kept away from direct sunlight, electric motors, welders, battery chargers, and other ozone-producing equipment. Proper inflation during storage matters, and the car should either be moved periodically or supported in a way that reduces long-term static loading. Collector tires last better when they are protected from heat cycling and environmental exposure.

That advice is especially important on an Aurelia because classic European tires are often used on cars that sit for extended periods between drives or events. If the car will be parked for months, inspect the sidewalls before and after storage and avoid letting the tires rest in standing moisture. Consistent storage habits help preserve appearance as well as service life.

Tires on a 1952 Lancia should be judged more by age and condition than by mileage, because collector cars often cover very little road distance each year. A sensible rule is to evaluate them closely once they are about five to seven years old and to treat roughly ten years as the point where replacement deserves serious consideration, regardless of remaining tread. The DOT or date marking on the tire helps establish age.

That timeline matters because an Aurelia may see careful seasonal use, occasional tours, and long periods of storage, all of which can hide age-related deterioration. A tire that still looks good at a glance can harden, crack, or lose confidence-inspiring behavior over time. If the car’s age history is unclear, verifying tire age should be part of your normal ownership routine.

Tires on a 1952 Lancia should be inspected before every drive, with a more thorough check before any longer outing. Look for sidewall cracking, tread damage, punctures, bulges, uneven wear, and signs that the tire is not holding air correctly. Since the available 165R400 tires are tube-type, the valve stem and overall tube condition deserve attention as part of that inspection routine.

A quick walkaround is useful for local drives, but a touring day or event run calls for more than that. Check pressures while the tires are cold, inspect the spare, and make sure the car is not relying on old rubber simply because it has seen light use. Routine inspection is one of the simplest ways to keep a rare postwar Lancia dependable on the road.

The 1952 Lancia Aurelia belongs to an era when European manufacturers were embracing radial tire technology, so a radial millimetric fitment is consistent with the character of the car. The sizes associated here are 165-400 and 165R400, both tied to the Aurelia and both built around a 400mm wheel. No original-equipment brand should be assumed unless you have market-specific factory literature or a strong preservation record for the car.

For a restoration, the safest path is to confirm the exact size marking expected for your particular Aurelia, then choose a tire that matches the period construction and the visual finish you want. Marque clubs, factory manuals, and surviving unrestored cars are especially valuable with European collector cars, where market and body variation can influence details that matter in judged presentation.

Correct tire fitment matters on a 1952 Lancia because judges and knowledgeable enthusiasts often notice the size family, construction type, and sidewall treatment very quickly. On an Aurelia, the right millimetric radial fitment supports the car’s historical character, while an obviously incorrect modern substitute can look out of place even before anyone studies the rest of the restoration. Sidewall style also affects whether the presentation feels authentic to the period and market.

That does not mean every event uses the same standard, but it does mean tires are part of the visual and technical story of the car. If you are preparing for concours-level scrutiny, verify the expected size marking and sidewall appearance with a Lancia club or event rulebook. A tire that is mechanically usable may still lose authenticity points if it looks wrong for the era.

For the 1952 Lancia Aurelia in 165R400, Michelin X Radial and Michelin X-Stop differ in presentation and fitment range even though both are radial, tube-type 87S tires. The Michelin X Radial version is offered as a Narrow Whitewall with a 6.0 to 7.0 inch rim-width range and a listed weight of 17 pounds. The Michelin X-Stop is offered as a Blackwall with a 4.50 to 6.00 inch rim-width range and a listed weight of 20 pounds.

That comparison makes the decision fairly practical. If your wheel falls into the narrower width range and you want a subdued appearance, the blackwall X-Stop is the more natural direction. If your wheel is wider and your restoration calls for a bit more sidewall formality, the narrow-whitewall Michelin X Radial aligns better visually and dimensionally.

Available 1952 Lancia Aurelia tires in 165R400 carry an S speed rating, which corresponds to 112 mph, and both current options are radial constructions. That puts the tire’s stated speed capability well beyond normal U.S. highway use. On a carefully maintained Aurelia, the broader mechanical condition of the car often matters more in real-world touring than the tire’s raw speed ceiling alone.

Highway safety still depends on more than the letter on the sidewall. Tire age, inflation, wheel condition, brake performance, steering integrity, and suspension health all matter on a postwar collector car. If the car is fresh from storage or seldom driven, give the whole chassis a proper inspection before assuming that a good-looking tire is the only requirement for a comfortable highway run.

A 1952 Lancia should not be assigned a blanket inflation pressure simply because the tire size looks familiar. The available 165R400 products list an 87S service description, but pressure should be set by the vehicle manufacturer’s recommended operating specification and checked against the tire maker’s rated limits for that exact product. Pressure is tied to the specific tire, the wheel, and the way the car is loaded in service.

The best approach is to start with the Aurelia’s factory guidance if you have it, then verify that your chosen tire is being used within its intended operating range. Avoid copying pressures from unrelated inch-based classics or from a different millimetric tire. On a rare European fitment, careful pressure setting has a noticeable effect on ride quality, steering feel, and tread behavior.

Before a longer drive in a 1952 Lancia, inspect each tire for cracking, cuts, bulges, irregular wear, and any sign of impact damage. Confirm cold inflation pressure, check the valve stems, and make sure the spare is usable as well. Since the available 165R400 tires are tube-type, tube-related air loss and valve condition deserve the same attention as the outer tire itself.

A prudent pre-drive routine should also include the rest of the car, especially on an Aurelia that may be driven less often than a modern vehicle. Brakes, fluids, cooling, wheel fasteners, and steering should all be part of the check before a tour or event. Tires are a critical part of road readiness, but they work best when the entire chassis is equally prepared.