The 1955 Citroen W 15 comes from a period when Citroen was already known for doing things differently, blending advanced engineering with road manners that stood apart from many contemporaries. On a collector vehicle like this, tire choice affects more than simple replacement fitment because the tire’s proportions and construction play a big role in how the car looks and feels on the road. The primary fitment is a 185-400 radial, a classic metric millimetric radial size tied to the car’s original-era wheel standard. That makes this a fitment-first purchase centered on the proper sizing format rather than choosing between multiple primary sizes. For restoration-minded owners, preserving the correct metric radial format is the key starting point before any road-use inspection or service work.
Which Tire Size Is Right for The 1955 Citroen W 15
The 1955 Citroen W 15 uses one primary tire size: 185-400. It is a radial fitment in a classic metric millimetric format, and the same size is used on the covered W 15 Six sub-model. That means the main decision is not which primary size fits, but making sure the car still has the correct wheel standard and that the tire selected matches the vehicle’s restoration goals and road-use needs.
The 185-400 size is a classic millimetric radial format, with 185 indicating the nominal section width in millimeters and 400 referring to the wheel diameter in millimeters rather than inches. That makes it different from more familiar modern inch-based and P-metric sizing, and it is an important part of proper W 15 fitment. Its radial construction suits the vehicle’s original-era engineering character and should be matched carefully to the correct wheel setup. Choosing this size starts with confirming the existing wheels are still the proper millimetric type and that the overall tire presentation supports the car’s restoration or driving plans.
Fitment is straightforward for the covered 1955 Citroen W 15 sub-models. The W 15 Six uses the same primary tire size, so the key step is confirming the car still carries the proper millimetric wheel setup before selecting a replacement tire.
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1955 Citroen W 15 Six
The 1955 Citroen W 15 Six uses the same 185-400 radial tire size as the core W 15 fitment. For tire selection, that keeps the focus on maintaining the correct classic metric wheel-and-tire relationship and choosing a replacement that suits either careful restoration work or regular collector-vehicle 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
For a 1955 Citroen W 15, the most important tire questions center on the 185-400 millimetric radial size, wheel compatibility, restoration-minded fitment, and the condition checks that matter before putting a collector car back on the road.
Tire Size & Fitment
What tire size fits a 1955 Citroen W 15?
The 1955 Citroen W 15 uses a 185-400 radial tire. That is the primary fitment for this vehicle, and the covered W 15 Six sub-model uses the same size. Unlike common modern inch-based sizes, 185-400 is a classic millimetric radial format tied to a specific wheel standard.
The practical issue is making sure the car still has the correct 400-millimeter wheels before buying tires. Many vintage vehicles have been altered over time, so it is worth checking the actual wheel setup on the car, along with overall tire condition, before moving ahead with replacement.
What size rim does a 1955 Citroen W 15 use?
A 1955 Citroen W 15 fitted with 185-400 tires uses a 400-millimeter rim. This is not the same as a modern inch-designated wheel, which is why the tire size can look unfamiliar to buyers who are used to 15-inch or 16-inch fitments on other collector vehicles.
Rim confirmation matters as much as tire size on this application. A tire in millimetric format needs the proper millimetric wheel, so the right next step is to inspect the wheels already on the car and verify they have not been replaced with something different during earlier restoration or maintenance work.
Does the 1955 Citroen W 15 Six use the same tire size?
Yes. The 1955 Citroen W 15 Six uses the same 185-400 radial tire size as the core 1955 Citroen W 15 fitment. That keeps the fitment picture simple, since there is no alternate primary size to sort out within the covered sub-model information.
Even with shared fitment, the wheel setup still deserves a close look because older collector cars are often changed over decades of service. Tire replacement should start with confirming the existing rims match the 400-millimeter standard and that there are no clearance, wear, or condition issues that need attention first.
Choosing the Right Tire
What should I consider when choosing a 185-400 tire for a 1955 Citroen W 15?
Start with the basics: the 1955 Citroen W 15 uses a 185-400 radial, so the first priority is staying with that correct millimetric size and wheel standard. On a vehicle like this, the right choice is less about sorting through many primary fitments and more about matching the tire to the proper wheel and the car’s intended use.
A restoration-focused owner may want a tire that preserves the traditional proportions and overall presentation of the car, while a driver-focused owner may put more emphasis on road readiness and condition. Wheel compatibility, age of the current tires, and any past modifications should all be checked before finalizing a replacement.
How do I choose between available 185-400 tires for a 1955 Citroen W 15?
The key is to compare choices within the correct 185-400 radial size rather than trying to substitute a more common modern size without verification. On a specialty fitment like this, details such as construction style, intended appearance, and compatibility with the car’s existing wheel setup matter more than broad assumptions drawn from other vintage vehicles.
A useful approach is to think about how the W 15 will actually be used. A car built for careful touring may call for one set of priorities, while a restoration project may emphasize period-style presentation and proper fitment standards. Tire condition, wheel condition, and overall vehicle setup should guide the final decision.
Why is the 185-400 size important on a 1955 Citroen W 15?
The 185-400 size matters because it reflects a millimetric wheel-and-tire system rather than the inch-based sizing more familiar on many classic cars. On the 1955 Citroen W 15, that means the tire size is part of the vehicle’s fundamental fitment, not just a label that can be approximated with a nearby modern size.
Keeping that distinction in mind helps avoid costly mistakes. Before replacing tires, confirm the wheel diameter standard on the car, inspect for any prior wheel changes, and make sure the replacement maintains the intended relationship between the tire, wheel, and body clearances instead of relying on visual similarity alone.
Restoration & Appearance
Which tire should I choose for a period-style 1955 Citroen W 15?
For a period-style 1955 Citroen W 15, the right starting point is the correct 185-400 radial size. Because this Citroen uses a classic millimetric fitment, preserving that sizing format is an important part of maintaining the vehicle’s proper stance and overall visual balance during a restoration-minded tire replacement.
Owners seeking a highly exact presentation should verify wheel type and consult model-specific historical references before making final appearance decisions. Even when the size is correct, details in construction and overall profile can influence how authentic the finished car looks once it is back on its wheels.
Does correct tire fitment matter for a 1955 Citroen W 15 restoration?
Yes, correct tire fitment matters a great deal on a 1955 Citroen W 15 restoration. The 185-400 radial size is part of the car’s proper wheel-and-tire relationship, and using the right millimetric fitment helps preserve the vehicle’s intended proportions instead of forcing a more common size onto an incompatible setup.
Fitment also affects more than appearance. Wheel compatibility, tire age, and physical clearance around suspension and bodywork should all be checked while the car is apart. A restoration gains a cleaner result when the tire choice supports both the look of the car and the practical realities of safe road use.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1955 Citroen W 15?
Yes. Any change to wheels, suspension height, steering components, or body clearance can affect tire fitment on a 1955 Citroen W 15. That is especially important here because the car uses a 185-400 millimetric radial, so even a seemingly minor change in wheel specification can alter whether the intended tire setup remains appropriate.
A modified car should be checked closely before replacement tires are chosen. Wheel diameter standard, wheel width, clearance at full steering lock, and suspension condition all deserve attention so the replacement tire supports the car’s actual setup rather than only its original published fitment.
What should I inspect before driving a 1955 Citroen W 15 on new tires?
Before road use, inspect the wheels, valve hardware, and mounting surfaces along with the new tires themselves. The tread and sidewalls should be free from damage, and the vehicle should be checked for obvious alignment, steering, or suspension problems that could shorten tire life or affect how the car feels on the road.
Collector cars often sit for long periods, so it is smart to also check for old age-related issues elsewhere in the running gear. Proper tire pressure, secure wheel attachment, and clearances through the full steering range are all worth confirming before the W 15 returns to regular driving duty.
How should 185-400 tires on a collector 1955 Citroen W 15 be maintained?
185-400 tires on a collector 1955 Citroen W 15 should be kept clean, properly inflated, and inspected regularly for cracking, bulges, cuts, irregular wear, and air loss. Even when tread looks good, age and long storage periods can affect a vintage vehicle’s tires in ways that are easy to miss at a glance.
Storage conditions make a difference as well. A cool, dry space away from prolonged sunlight and ozone sources helps protect the tire over time, and occasional checks during storage are worthwhile. Regular inspection is especially important before longer drives, seasonal use, or the first outing after the car has been parked for months.
