The 1965 Citroen DS stood apart from nearly everything else on the road, blending advanced French design with a ride and road manners that still feel distinctive in collector-car circles. Its streamlined body and technical sophistication make tire choice more than a routine maintenance decision, especially for owners preserving the car’s original character. The 1965 Citroen DS uses a 165-400 radial tire, a millimetric size that reflects the car’s European engineering rather than a later inch-based American standard. That makes size interpretation especially important when comparing available replacements. For a restoration-minded driver, the priority is keeping the correct sizing format while confirming the wheel setup and overall tire condition before regular road use.
Which Tire Size Is Right for The 1965 Citroen DS
The 1965 Citroen DS uses one primary tire size: 165-400, and it is a radial fitment. On the covered DS 19 Sedan, that single size defines the fitment question, so the real decision is not which primary size fits, but how to understand this millimetric sizing format and confirm that the car still has the proper wheel setup before choosing a tire.
The 165-400 size uses a classic metric millimetric format, with 165 indicating nominal section width in millimeters and 400 identifying the wheel diameter in millimeters rather than inches. It is a radial tire size, which matches the 1965 Citroen DS and suits the car’s original European tire-sizing approach. That format can look unfamiliar to buyers used to modern inch-based or P-metric sizing, so reading the code correctly matters before comparing tires or wheels. Choosing this size starts with preserving the proper millimetric fitment and confirming that the car has not been converted to a different wheel diameter.
Fitment is straightforward for the covered 1965 Citroen DS sub-model. The DS 19 Sedan uses the same primary tire size, so the focus shifts from comparing multiple sizes to confirming the car’s wheel and tire setup remains true to that millimetric radial fitment.
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1965 Citroen DS 19 Sedan
The 1965 Citroen DS 19 Sedan uses the 165-400 radial tire size, keeping fitment simple within this sub-model. Tire selection is therefore centered on finding the correct millimetric radial size and verifying that the wheels have not been changed to a different diameter over the years.
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
These FAQs focus on the 1965 Citroen DS and the details that matter most when selecting tires for it, including the 165-400 millimetric radial size, wheel fitment, period-style considerations, and the checks worth making before driving.
Tire Size & Fitment
What tire size fits a 1965 Citroen DS?
The 1965 Citroen DS uses a 165-400 radial tire. For the covered DS 19 Sedan, that is the primary fitment size, and it follows a classic metric millimetric sizing convention rather than a modern inch-based size format.
That means the first step is making sure the car still has the proper wheels for a 400-millimeter tire. Many collector cars have been changed over the years, so the tire choice should begin with the actual wheel setup on the vehicle rather than assuming a later inch-based size will match.
What size rim does a 1965 Citroen DS use?
A 1965 Citroen DS fitted with 165-400 tires uses a 400-millimeter rim diameter, not a 15-inch or 16-inch rim. That distinction is important because the tire size itself is built around a millimetric wheel standard.
Buyers used to American sizing can easily mistake 165-400 for a width-and-profile code, but the final number is the wheel diameter. Before choosing tires, inspect the wheels already on the car and confirm they remain the correct millimetric rims, especially if the car has had previous restoration or maintenance work.
Does the 1965 Citroen DS 19 Sedan use the same tire size?
Yes. The covered 1965 Citroen DS 19 Sedan uses the same 165-400 radial tire size. Within this application, there is no separate alternate primary size to sort through at the sub-model level.
That simplifies the fitment search, but it does not eliminate the need to check the actual wheels on the car. A DS that has been modified or converted in the past may no longer be on its original millimetric wheel setup, so the safest path is always to match the tire to the wheels currently installed.
Choosing the Right Tire
What should I consider when choosing a 165-400 tire for a 1965 Citroen DS?
Start with the correct 165-400 size and the proper radial construction, since that is the fitment standard for the 1965 Citroen DS. The main buying consideration is preserving the car’s millimetric tire-and-wheel relationship rather than substituting a more familiar inch-based size without careful verification.
A good selection process also includes checking the actual wheel diameter on the car, inspecting wheel condition, and thinking about how the DS will be used. A lightly driven collector car, a restoration project, and a regularly exercised road car all benefit from the same basic rule: keep the size format correct first.
How do I choose between the available 165-400 tires for a 1965 Citroen DS?
The best comparison points for 165-400 tires on a 1965 Citroen DS are the correct size, radial construction, and how closely the tire suits the car’s restoration goals and intended use. Because this is a specialized millimetric fitment, size accuracy matters more than chasing a modern-looking substitute.
It also helps to think about the car’s overall presentation and driving plan. A restoration-oriented DS may call for a more traditional visual approach, while a driver-focused car still needs the same careful attention to wheel compatibility, tire age, and general condition before putting the car back into regular road service.
Why is the 165-400 size on a 1965 Citroen DS different from modern tire sizes?
The 165-400 size belongs to an older metric radial system that uses a millimetric wheel diameter. On the 1965 Citroen DS, that means the tire is designed for a 400-millimeter rim, which differs from the inch-based sizing familiar on many later vehicles.
That older format is part of what makes DS tire selection more specialized. Instead of treating it like a generic modern metric tire, the better approach is to read the size exactly as intended and confirm the car still carries the correct rim standard before making any replacement decision.
Restoration & Appearance
Which tire should I choose for a period-style 1965 Citroen DS?
For a period-style 1965 Citroen DS, the right starting point is the correct 165-400 radial size. Keeping the original millimetric sizing approach preserves the car’s intended fitment character far better than forcing a later inch-based size onto the car without careful wheel and clearance evaluation.
Appearance matters on a DS because the tire contributes to the overall stance and visual balance of the car. When exact restoration accuracy is important, it is wise to compare the tire choice against marque knowledge, period photos, and vehicle-specific restoration references rather than relying on modern size familiarity alone.
Does correct tire fitment matter for a 1965 Citroen DS restoration?
Yes, correct tire fitment matters significantly on a 1965 Citroen DS restoration. The car uses a 165-400 radial, and that millimetric sizing is part of the vehicle’s engineering character as well as its visual presentation.
A DS restored with an incorrect wheel standard or an improvised substitute size can lose some of the look and proportional balance that make the car distinctive. Even on a driver-quality restoration, matching the proper size format and verifying the wheel setup helps keep the finished car closer to its intended appearance and fitment.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1965 Citroen DS?
Yes. Modifications can affect tire fitment on a 1965 Citroen DS, especially if the car has been converted away from its original 400-millimeter wheel standard. Wheel changes, suspension alterations, or previous restoration decisions can all change what tire size the car can physically accept.
That is why a hands-on inspection matters before replacing tires. Check the wheel diameter actually on the car, look for any non-original wheels, and confirm clearance around the fenders and steering components. A DS that appears stock from a distance may still have important fitment differences underneath.
What should I inspect before driving a 1965 Citroen DS on new tires?
Before driving a 1965 Citroen DS on new tires, inspect the wheels for correct diameter and condition, verify that the tires are properly mounted, and look over the suspension and steering for obvious wear or damage. Tire pressure should also be checked before the car goes back on the road.
Collector cars often sit for long periods, so a fresh tire does not automatically solve every road-use issue. It is smart to inspect for rubbing, confirm even clearance lock to lock, and recheck the tires after the first few drives for air retention and any signs that the wheel-and-tire setup needs attention.
How should 165-400 tires on a collector 1965 Citroen DS be maintained?
165-400 tires on a collector 1965 Citroen DS should be maintained with regular pressure checks, visual inspections, and close attention to age-related condition. Sidewall cracking, bulges, cuts, irregular wear, and unexplained air loss all deserve prompt attention, even if the car is driven only occasionally.
Storage conditions matter too. Keeping the car away from prolonged sunlight, heat, moisture, and ozone sources helps protect low-use collector tires between drives. It also makes sense to inspect the wheels and valve stems at the same time, since a specialized millimetric setup deserves the same careful maintenance as the tires themselves.
