The 1956 Citroen 11 belongs to the long-running Traction Avant family, a car remembered for its advanced front-wheel-drive layout, low stance, and distinctly French approach to ride and road manners. Buyers looking after one today are usually balancing authentic character with practical drivability on a collector vehicle that still feels unusually modern for its era. Tire fitment is especially important here because the 1956 Citroen 11 uses millimetric radial sizes, with 165-400, 155-400, and 185-400 tied to different sub-models. That makes sub-model identification the first step, followed by choosing the right tire width and presentation for restoration goals and intended road use.
Which Tire Size Is Right for The 1956 Citroen 11
The 1956 Citroen 11 uses three primary tire sizes, and the correct one depends on the exact sub-model. All three are radial millimetric fitments rather than common inch-based American sizes, so the first step is confirming whether the car is an 11 B, 11 BL, or 11 F. Once that is settled, the decision becomes selecting the proper width and tire style for the car's intended appearance and road use.
A 165-400 size uses a metric width designation, with 165 referring to the nominal section width in millimeters and 400 indicating the millimetric rim diameter. This is a radial tire format, which suits the Citroen 11's period of advanced European tire development and should not be confused with a modern inch-based rim size. For a 1956 Citroen 11, this size belongs with the 11 B sub-model. It is the right starting point when preserving the proper fitment character for that configuration while still checking the actual wheel and vehicle setup before replacement.
A 155-400 tire is another classic metric radial size, with a narrower nominal section width than the 165-400 and the same 400 millimeter rim standard. This format reflects the specialized European sizing used on mid-century Citroen applications, so it requires attention to the correct wheel rather than an assumption based on modern inch-diameter tires. On the 1956 Citroen 11, this size is used on the 11 BL. It is the proper fitment path when the goal is keeping that sub-model aligned with its intended tire dimensions and overall presentation.
The 185-400 designation indicates a classic metric radial with a wider nominal section width than the other Citroen 11 sizes and a 400 millimeter rim diameter. It remains a specialized European fitment, so the key point is matching the tire to the correct sub-model and wheel standard rather than treating it like a common modern radial size. On this vehicle, 185-400 belongs to the 11 F. That makes it the correct size to evaluate when replacing tires on that version while also confirming clearance and wheel condition on an older collector car.
Sub-model fitment matters on the 1956 Citroen 11 because each covered version uses its own primary tire size. The car's millimetric radial sizing is straightforward once the exact sub-model is confirmed, but choosing by year and model alone can still lead to the wrong width.
1
1956 Citroen 11 B
The 1956 Citroen 11 B uses the 165-400 radial size. That means tire selection starts with preserving that specific millimetric fitment, then choosing the tire that best suits the car's restoration direction and intended road use.
The 1956 Citroen 11 BL uses the narrower 155-400 radial size. That makes exact sub-model confirmation important before replacement, especially on a collector car where appearance, handling balance, and wheel compatibility all matter.
The 1956 Citroen 11 F uses the 185-400 radial size. For this version, the tire decision centers on keeping the correct width and millimetric rim standard in place while checking overall clearance and wheel condition before returning the car to road use.
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
Owners of a 1956 Citroen 11 usually need clarity on the correct millimetric tire size for their exact sub-model, how that sizing works, and what to inspect before putting a restored or long-stored car back on the road.
Tire Size & Fitment
What tire size fits a 1956 Citroen 11?
A 1956 Citroen 11 does not use one universal tire size across every version. The 11 B uses 165-400, the 11 BL uses 155-400, and the 11 F uses 185-400. All three are radial millimetric sizes rather than common inch-based American fitments.
That means the first job is identifying the exact sub-model before choosing a tire. On an older Citroen, it is also wise to confirm the wheels on the car are still the correct millimetric type, especially if the vehicle has been modified or pieced together during restoration.
Do all 1956 Citroen 11 sub-models use the same tire size?
No. The 1956 Citroen 11 uses different tire sizes by sub-model: 165-400 for the 11 B, 155-400 for the 11 BL, and 185-400 for the 11 F. Each of those sizes is a radial fitment built around a 400 millimeter rim standard.
That distinction matters because the sizes differ in width, and the wheel standard is not the same as a common 15-inch or 16-inch fitment. A buyer should verify the sub-model and inspect the actual wheels before replacement, particularly on a long-owned collector car with unknown service history.
What does 165-400 mean on a 1956 Citroen 11?
On a 1956 Citroen 11, 165-400 is a classic metric radial size. The 165 refers to the nominal section width in millimeters, while 400 refers to the millimetric rim diameter. It is not an inch-based size and should be treated as its own fitment standard.
That matters because modern buyers can easily mistake the second number for a conventional wheel diameter. On the Citroen 11 B, this size is the proper starting point, but the actual wheel condition and the car's present configuration still deserve a close check before mounting replacement tires.
Choosing the Right Tire
What should I consider when choosing a 165-400, 155-400, or 185-400 tire for a 1956 Citroen 11?
Start with the exact sub-model, because the 1956 Citroen 11 uses different primary sizes across the range. The 11 B takes 165-400, the 11 BL takes 155-400, and the 11 F takes 185-400. Choosing by model name alone is not enough on this application.
After confirming the right size, look at the condition and type of wheel on the car, along with how the vehicle will be used. A restoration-focused owner may emphasize traditional appearance, while a regular road-use owner may prioritize overall tire condition, age, and wheel compatibility on a car that has seen decades of repairs.
How do I choose between the available 1956 Citroen 11 tire sizes?
The available sizes are not alternatives for casual swapping across the whole model line. Each one belongs to a specific 1956 Citroen 11 sub-model, so the right choice is the size assigned to the car's exact version: 165-400, 155-400, or 185-400.
Once the sub-model is confirmed, the selection process becomes more practical. Check that the wheel is still the proper 400 millimeter type, inspect for previous modifications, and think about whether the car is being prepared for show presentation, occasional touring, or more regular collector-vehicle driving.
What rim-fitment details should I compare when choosing 1956 Citroen 11 tires?
The key rim-fitment detail on a 1956 Citroen 11 is that these are millimetric radial sizes built around a 400 millimeter rim standard. That is different from a typical inch-based wheel, so tire choice begins with matching the tire to the correct wheel type and sub-model size.
Beyond diameter standard, inspect the wheel for age, damage, and any signs of prior replacement with non-original hardware. A car that has been restored long ago or modified for road use may no longer wear its original wheel setup, and that can affect both safe mounting and overall tire fitment.
Restoration & Appearance
Which tire should I choose for a period-style 1956 Citroen 11?
For a period-style 1956 Citroen 11, the best starting point is the correct original-type size for the exact sub-model: 165-400 for the 11 B, 155-400 for the 11 BL, or 185-400 for the 11 F. Keeping the proper millimetric radial format matters to the car's visual stance and fitment character.
That does not mean every restored car should be treated the same way. Some owners prioritize historical presentation, while others want a roadworthy collector tire that still respects the car's era. When exact originality matters, compare the tire choice against marque-specific restoration references and the wheel setup on the vehicle.
Does correct tire fitment matter for a 1956 Citroen 11 restoration?
Yes, correct tire fitment matters on a 1956 Citroen 11 restoration because the car uses specialized millimetric radial sizes tied to specific sub-models. The proper size affects more than appearance alone; it also influences how the car sits, fills the wheel opening, and relates to its intended wheel standard.
A restoration can lose authenticity quickly if the tire size or wheel type is approximated instead of verified. Even on a driver-quality car, using the proper 155-400, 165-400, or 185-400 fitment helps preserve the Citroen's character while reducing the chance of avoidable clearance or mounting issues.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1956 Citroen 11?
Yes. A 1956 Citroen 11 can be affected by wheel changes, suspension work, body repairs, or past attempts to adapt the car to more common tire sizes. Because this Citroen uses specialized 400 millimeter radial fitments, even small deviations from the intended setup can change what mounts properly.
A close inspection is worthwhile before replacement. Check whether the wheels are still millimetric, look for clearance issues at full steering travel, and note any signs of altered ride height or non-original wheel hardware. Those details matter more on an older vehicle than simply matching the size code alone.
What should I inspect before driving a 1956 Citroen 11 on new tires?
Before road use, inspect the wheels for damage, corrosion, and proper bead seating surfaces, then confirm the tire size matches the exact sub-model. Also check valve stems, wheel fasteners, and basic suspension condition so the new tires are not being asked to compensate for worn or damaged components.
A collector Citroen that has spent long periods parked also deserves a careful look at steering play, brake operation, and clearance through the full range of movement. Tire pressure should be set correctly for the application, and any persistent air loss, vibration, or rubbing should be addressed before longer drives.
How should tires on a collector 1956 Citroen 11 be maintained?
Tires on a collector 1956 Citroen 11 should be inspected regularly for cracking, bulges, cuts, tread wear, and slow air loss, even if the car is driven only occasionally. Age and storage conditions matter just as much as mileage on a low-use vintage vehicle with specialized radial fitments.
Storage away from prolonged sunlight, ozone sources, moisture, and extreme heat helps preserve tire condition over time. It also helps to move the car periodically, maintain proper inflation, and recheck the wheels and tires before each driving season so problems are caught before they become roadside issues.
