The 1966 Lancia Flaminia belongs to the final chapter of one of Lancia’s most sophisticated grand touring cars, a model known for elegant engineering and a distinctly Italian approach to road manners. Buyers looking at one today are usually balancing originality, drivability, and the realities of maintaining a collector car built around period European sizing. Tire fitment centers on two radial designations, 175-400 and 175R400, both tied to the Flaminia’s millimetric wheel format. That makes tire choice less about moving between many configurations and more about understanding the size notation and preserving the car’s intended stance and compatibility. Careful wheel confirmation matters before any purchase or road use.
Which Tire Size Is Right for The 1966 Lancia Flaminia
The 1966 Lancia Flaminia uses two closely related primary tire size designations, both in radial construction and both associated with the same covered sub-model. The key decision is understanding whether your car is set up for 175-400 or 175R400, then choosing a tire that matches the wheel format and the way you want the car to present and drive as a collector vehicle.
The 175-400 size is a classic metric or millimetric radial format, with 175 indicating the nominal section width in millimeters and 400 referring to the wheel diameter in millimeters rather than inches. Its radial construction suits the later European touring character of the 1966 Lancia Flaminia and reflects the car’s period fitment approach. This is not the same sizing language used on most American classic cars, so the wheel format needs special attention. It is the right size to evaluate when the goal is to maintain proper millimetric compatibility and a restoration-oriented overall presentation.
The 175R400 size uses Euro-metric radial notation, where 175 gives the nominal section width in millimeters, R confirms radial construction, and 400 identifies a millimetric wheel diameter. On a 1966 Lancia Flaminia, this designation points to the same general family of period European fitment rather than a modern inch-based replacement. Buyers often encounter this format because European collector cars from the era can carry tire markings that differ from more familiar domestic sizing systems. It is worth checking the exact wheel and existing tire markings so the selected tire matches the car’s current setup and intended use.
Fitment is straightforward across the covered 1966 Lancia Flaminia sub-model, with the same pair of radial millimetric tire designations associated with it. Checking the exact sub-model still helps confirm that the car remains on the proper wheel format before choosing between available tire options.
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1966 Lancia Flaminia 2.8 & 3B
The 1966 Lancia Flaminia 2.8 & 3B uses the same radial millimetric fitment pattern, centered on 175-400 and 175R400. Tire selection is mainly about confirming which designation matches the wheels currently on the car and keeping the fitment consistent with a period European grand touring presentation.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Frequently Asked Questions
Questions about 1966 Lancia Flaminia tires usually center on millimetric sizing, radial construction, wheel compatibility, restoration-minded selection, and the checks that matter before putting a collector Lancia back on the road.
Tire Size & Fitment
What tire size fits a 1966 Lancia Flaminia?
The 1966 Lancia Flaminia uses 175-400 and 175R400 tire sizes, both in radial construction. Those sizes are part of a classic European millimetric fitment system, so the wheel diameter is identified in millimeters rather than the inch-based sizing that many collectors know from American cars.
The practical step is to confirm which designation is on the car now and to verify that the wheels are still the correct millimetric type. A Flaminia that has been modified over the years may no longer be on its original wheel setup, so checking the tire markings and actual wheel format is important before selecting a replacement.
What size rim does a 1966 Lancia Flaminia use?
A 1966 Lancia Flaminia fitted with 175-400 or 175R400 tires uses a 400-millimeter rim format. That is a millimetric wheel size, not a 15-inch or other standard inch-based rim, which makes it an important distinction when replacing tires on this car.
Wheel confirmation matters because a tire meant for a 400-millimeter rim should not be treated as interchangeable with a similar-looking inch-based size. Before mounting new tires, inspect the wheel markings, verify that the car has the correct rims on all four corners, and make sure no past conversion has changed the wheel standard.
Does the 1966 Lancia Flaminia 2.8 & 3B use the same tire size?
Yes. The covered 1966 Lancia Flaminia 2.8 & 3B uses the same pair of radial tire designations: 175-400 and 175R400. That means the sub-model does not introduce a separate tire size family within this fitment grouping.
Even with shared fitment, it is still worth checking the exact tires and wheels on the individual car. Collector vehicles can pick up replacement wheels or mixed tire markings over time, so the smartest approach is to confirm what is physically mounted now and keep the replacement aligned with the Flaminia’s millimetric wheel setup.
Choosing the Right Tire
What should I consider when choosing a 175-400 tire for a 1966 Lancia Flaminia?
Start with size accuracy and wheel format. A 175-400 tire belongs to the Flaminia’s millimetric radial system, so the first priority is making sure the car is actually running the correct 400-millimeter wheels and that 175-400 is the designation you want to retain.
After that, the decision becomes one of presentation and use. A restoration-minded owner may want a tire that preserves the car’s period European character, while a driver-focused owner may be more concerned with consistent road manners and tire condition. Matching all four tires and avoiding mixed sizing conventions usually makes ownership simpler.
How do I choose between 175-400 and 175R400 tires for a 1966 Lancia Flaminia?
The choice begins with the wheel and tire designation already on the car. Both 175-400 and 175R400 are radial millimetric fitments used on the 1966 Lancia Flaminia, so the main question is which marking corresponds to the setup your car is carrying now.
Look closely at the existing tire sidewalls, confirm the wheel format, and avoid assuming that similar dimensions mean the same fitment. Keeping one consistent size designation across the full set helps preserve balanced handling and appearance, especially on a collector grand touring car where mixed replacements can create unnecessary mounting and fitment complications.
How do I choose between the available tires for a 1966 Lancia Flaminia?
The best comparison points are the correct size designation, radial construction, and compatibility with the Flaminia’s millimetric wheel setup. Once those basics are settled, look at the tire’s overall presentation and whether it suits a restoration-oriented car, a regularly driven collector car, or a vehicle meant mainly for occasional event use.
Condition and consistency matter as much as appearance. A matched set with the right size and wheel compatibility is usually more important than chasing cosmetic differences alone. It also helps to inspect the suspension, alignment condition, and wheel integrity so the selected tires can work as intended on a car of this age.
Restoration & Appearance
Which tire should I choose for a period-style 1966 Lancia Flaminia?
A period-style choice for a 1966 Lancia Flaminia starts with the proper millimetric radial sizing, either 175-400 or 175R400, depending on the wheel and tire designation the car is set up to use. Staying within that fitment family helps preserve the visual proportions and European character associated with the Flaminia.
For many restorations, the goal is not simply finding a tire that mounts, but finding one that keeps the car visually believable and mechanically appropriate. If exact originality is important, compare the car’s existing wheels, period photos, and marque-specific references so the finished tire choice supports the restoration rather than just filling the wheel opening.
Does correct tire fitment matter for a 1966 Lancia Flaminia restoration?
Yes, correct tire fitment matters because the 1966 Lancia Flaminia uses a distinct millimetric radial setup that affects both appearance and wheel compatibility. Choosing the right 175-400 or 175R400 fitment helps the car sit and present the way a mid-1960s Italian grand touring car should.
Restoration results can look off quickly when the tire format is changed without regard to wheel type or period proportions. Even if the car is not headed for formal judging, keeping the proper sizing language and wheel standard usually leads to a more coherent finished car and fewer fitment surprises during mounting and road use.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1966 Lancia Flaminia?
Yes. Any wheel conversion, suspension alteration, brake change, or body modification can affect tire fitment on a 1966 Lancia Flaminia. That is especially important here because the car uses a millimetric tire and wheel format, so a previous owner may have changed the setup in ways that are not obvious at first glance.
A modified Flaminia should be checked for actual wheel diameter, wheel width, steering clearance, and fender room before replacement tires are chosen. Looking only at the old sidewall markings is not always enough. Measuring what is on the car now helps prevent buying a tire that matches the original standard but not the current hardware.
What should I inspect before driving a 1966 Lancia Flaminia on new tires?
Before road use, inspect the wheels for damage or corrosion, confirm proper mounting, and make sure the tire size matches the Flaminia’s wheel format. It is also smart to check valve stems, inflation pressure, lug hardware, and general suspension condition so the new tires are not being asked to compensate for other age-related issues.
A short shakedown drive should include attention to vibration, pull, rubbing, and any unusual steering feel. Collector cars that have sat for long periods can reveal wheel-bearing, brake, or alignment problems only after they are back in motion, so the first miles should be cautious and followed by a second visual inspection.
How should 175-400 tires on a collector 1966 Lancia Flaminia be maintained?
Maintain 175-400 tires on a collector 1966 Lancia Flaminia by keeping inflation consistent, inspecting the sidewalls and tread regularly, and watching for cracking, cuts, bulges, or slow air loss. Cars that spend long stretches parked deserve extra attention because tire condition can decline with age even when mileage stays low.
Storage habits matter almost as much as driving habits. Keeping the Flaminia away from prolonged sunlight, moisture, and ozone sources helps preserve the tires, and moving the car periodically can reduce long-term flat spotting. Regular visual checks before every drive are a sensible routine for any collector car using specialized millimetric fitment.
