The 1970 Peugeot 404 belongs to the era when Peugeot sedans, wagons, and cabriolets built a reputation for durable engineering, composed road manners, and understated European style. It is also a car that sits right at the meeting point between traditional bias-ply fitment and the broader adoption of radial tires. On this model, tire choice depends first on body style, with Sedan & Convertible using 165R15 radial or 590-15 bias-ply options, while the Wagon uses 185R15 radial or 6.50-15 bias-ply sizing. That opens the door to different sidewall looks, tire series, and in some cases radial-equivalent alternatives. The right choice comes down to preserving period character, matching the wheel setup, and deciding how the car will actually be driven.
Which Tire Size Is Right for The 1970 Peugeot 404
Four primary tire sizes apply to the 1970 Peugeot 404, and the correct one depends on the specific sub-model rather than a single across-the-board fitment. All of them use a 15-inch rim, but the Sedan & Convertible and the Wagon do not share the same sizing. The first step is confirming which body style you have, then choosing between the proper bias-ply fitment and the corresponding radial option for that configuration.
165R15 is a Euro-metric radial size in which 165 identifies nominal section width in millimeters, R designates radial construction, and 15 is the wheel diameter in inches. On the 1970 Peugeot 404, it serves as the radial fitment for Sedan & Convertible models and gives buyers a more modern radial sizing convention within the original 15-inch wheel family. Available choices include blackwall, narrow whitewall, and wide whitewall designs across lines such as Coker Classic Radial, American Classic Radial, Silvertown Radial, Michelin XZX, Michelin XAS, and Vredestein classics. It is the size to evaluate when retaining the Sedan or Convertible's radial fitment is the priority.
590-15 is a numeric bias-ply size where the first number represents nominal section width with the decimal omitted, or about 5.90 inches, while 15 identifies the rim diameter. On the 1970 Peugeot 404, this is the bias-ply fitment used on Sedan & Convertible models for buyers seeking a more traditional construction and presentation. Product choices include blackwall and wide whitewall versions, with BFGoodrich Silvertown Classic Bias Ply and Avon Turbospeed Mk4 offerings in this size category. It is the size to consider when a period-style bias-ply look matters more than moving to a radial-format alternative.
185R15 is a Euro-metric radial size, with 185 indicating nominal section width in millimeters, R marking radial construction, and 15 identifying the wheel diameter. For the 1970 Peugeot 404, this is the radial fitment tied to Wagon models, separating it from the narrower Sedan & Convertible radial size. Choices in 185R15 include blackwall, narrow whitewall, and redline treatments through series such as Coker Classic Radial, Michelin XVS, Avon Turbosteel CR3B, and Universal Sport. It deserves attention when selecting tires for a Wagon that needs the correct 15-inch radial fitment and the right blend of touring appearance and sub-model-specific sizing.
6.50-15 is a numeric bias-ply size in which 6.50 describes the nominal section width in inches and 15 is the rim diameter. On the 1970 Peugeot 404, it is the bias-ply fitment associated with Wagon models rather than the Sedan & Convertible body styles. Its practical role is to preserve the Wagon's proper vintage bias-ply sizing approach on a 15-inch wheel, distinct from the Wagon's radial alternative in 185R15. Buyers considering this size should confirm the Wagon's wheel setup carefully and use it when a traditional construction is part of the intended restoration look or driving character.
Sub-model fitment on the 1970 Peugeot 404 is not universal, even though every version here uses a 15-inch rim. Checking whether the car is a Sedan & Convertible or a Wagon matters first, because each grouping uses its own radial and bias-ply sizing.
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1970 Peugeot 404 Sedan & Convertible
The 1970 Peugeot 404 Sedan & Convertible uses 165R15 in radial form or 590-15 in bias-ply form. That gives owners a clear choice between keeping a traditional bias-ply presentation or selecting a radial-format tire while staying within the correct 15-inch fitment family for these body styles.
The 1970 Peugeot 404 Wagon uses a different fitment path, with 185R15 as the radial size and 6.50-15 as the bias-ply size. Tire selection starts with that Wagon-specific sizing, then moves to construction choice, sidewall appearance, and wheel compatibility within the available 15-inch options.
Bias-Ply to Radial Tire Conversion for the 1970 Peugeot 404
For the 1970 Peugeot 404, the original 590-15 size has three radial-equivalent options. 165R15 is the 80-series metric radial equivalent, P165/75R15 is the P-metric 75-series radial alternative, and P175/70R15 is the P-metric 70-series radial alternative. These choices move from a classic Euro-metric radial format to progressively more modern P-metric sizing conventions and profiles. A recommended rim-width range of 4 to 5 inches applies, and any change should still be checked against the actual wheel, overall tire dimensions, and clearance around the car.
Modern Radial Equivalents
165R15
Equivalent 80-series Metric Radial (590-15)
P165/75R15
Equivalent P-metric 75-series Radial (590-15)
P175/70R15
Equivalent P-metric 70-series Radial (590-15)
Important Considerations When Replacing Bias Ply With Radial
Compare overall diameter and section width carefully to ensure proper fit.
Verify recommended rim range (4-5 in) and load needs match your vehicle specifications.
Check fender clearance, steering clearance, and stance before installation.
Consider suspension condition and intended road use when choosing equivalents.
Important Fitment Notes
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.
Best 1970 Peugeot 404 Tires for Sale
Available 1970 Peugeot 404 tire choices span radial and bias-ply construction, with brands including Coker Classic, American Classic, Firestone, BFGoodrich, Michelin, Avon, Vredestein, and Universal Vintage Tire. Across the fitment range, buyers can compare blackwall, narrow whitewall, wide whitewall, and redline styles along with several restoration-oriented radial and bias-ply series.
These 1970 Peugeot 404 tire FAQs focus on the questions that matter most once the exact body style is known: size selection, 15-inch rim fitment, bias-ply versus radial choices, radial equivalents for 590-15, appearance options, and road-use checks on a collector-era Peugeot.
Tire Size & Fitment
What tire size fits a 1970 Peugeot 404?
A 1970 Peugeot 404 can use more than one tire size, and the correct fitment depends on the sub-model. Sedan & Convertible models use either 165R15 radial or 590-15 bias-ply sizing, while Wagon models use either 185R15 radial or 6.50-15 bias-ply sizing. All of these tire choices are built around a 15-inch rim.
The main job is to match the tire size to the actual body style and wheel setup on the car. Many collector vehicles have seen wheel changes over the years, so checking the current rim diameter and width before selecting a tire is just as important as knowing whether the car is a Sedan, Convertible, or Wagon.
What size rim does a 1970 Peugeot 404 use?
The 1970 Peugeot 404 uses a 15-inch rim across the tire sizes associated with this model. That applies to both radial and bias-ply fitments, including 165R15, 590-15, 185R15, and 6.50-15. Even though the tire sizes differ by sub-model, they stay within the same basic rim diameter.
Rim diameter is only part of the fitment picture, especially on an older vehicle. Wheel width also matters, and it becomes especially important when comparing a narrow bias-ply size with a radial alternative. Measuring the wheels on the car helps avoid choosing a tire that matches the diameter but does not suit the actual rim width or intended use.
Why does the 1970 Peugeot 404 have more than one tire size?
The 1970 Peugeot 404 has more than one tire size because fitment varies by sub-model and by construction type. Sedan & Convertible models use either 165R15 radial or 590-15 bias-ply sizing, while Wagon models use either 185R15 radial or 6.50-15 bias-ply sizing. The difference is not random; it reflects distinct fitment paths within the 404 range.
That means tire selection should begin with body style, not just with the model name. A Wagon owner should not assume the same size used on a Sedan or Convertible applies, even though the wheel diameter is still 15 inches. Once the correct size family is confirmed, the next step is choosing the construction and sidewall style that suit the car.
Bias-Ply & Radial Options
Is 590-15 a bias-ply or radial tire for the 1970 Peugeot 404?
590-15 is a bias-ply tire size on the 1970 Peugeot 404. It is used on Sedan & Convertible models as the traditional construction option, while 165R15 serves as the corresponding radial fitment in that same body-style group. The size format itself is also a clue, since 590-15 follows the vintage numeric bias-ply convention.
That distinction matters because choosing between 590-15 and 165R15 is not only about size, but also about tire construction and driving character. Bias-ply tires preserve a more traditional look and feel, while a radial-format option changes the type of tire on the car. Wheel width, actual wheel condition, and clearance should still be checked before making the switch.
What radial tire sizes are equivalent to 590-15?
Radial equivalents for 590-15 include 165R15 as the 80-series metric radial option, P165/75R15 as the P-metric 75-series radial option, and P175/70R15 as the P-metric 70-series radial option. These three sizes give a 1970 Peugeot 404 owner several ways to compare a bias-ply fitment with more modern radial sizing formats.
The recommended rim-width range attached to these equivalents is 4 to 5 inches, which makes wheel measurement especially important before choosing one. A radial equivalent should be treated as an alternative rather than an automatic substitute, since wheel width, overall dimensions, and available clearance around the body and suspension still need to be confirmed.
What should I check before converting my 1970 Peugeot 404 from bias-ply to radial tires?
Start by confirming which 404 sub-model you have and which bias-ply size is on the car now. A Sedan or Convertible using 590-15 can be compared with radial equivalents such as 165R15, P165/75R15, and P175/70R15, while the Wagon follows a different fitment path with 185R15 as its radial size and 6.50-15 as its bias-ply size.
The next checks are the actual wheel width, tire-to-fender clearance, steering clearance, and the overall condition of the suspension and alignment. Collector cars often carry wheels or chassis parts that differ from original-era practice, so a radial conversion should be evaluated against the specific car rather than assumed to work simply because the rim diameter is the same.
Choosing the Right Tire
What should I consider when choosing a 165R15 tire for a 1970 Peugeot 404?
Choosing a 165R15 tire for a 1970 Peugeot 404 starts with confirming that the car is a Sedan or Convertible using the radial fitment, not a Wagon. Within that size, available choices include blackwall, narrow whitewall, and wide whitewall styles from brands such as Coker Classic, American Classic, Firestone, BFGoodrich, Michelin, and Vredestein.
After the size is confirmed, compare the tire series and wheel-width compatibility against the wheels actually on the car. Some 165R15 products suit a narrower rim range than others, and the available sidewall styles can change the car's overall presentation noticeably. A careful match of size, rim width, and appearance usually narrows the field quickly.
What sidewall styles are available for 1970 Peugeot 404 tires?
The 1970 Peugeot 404 has several sidewall styles available across its tire sizes, including blackwall, narrow whitewall, wide whitewall, and redline. The exact selection depends on the tire size, since 165R15 offers blackwall and whitewall options, 590-15 includes blackwall and wide whitewall bias-ply choices, and 185R15 adds redline to the mix.
Sidewall style affects appearance more than fitment, but it still plays a major role in choosing the right tire for a restoration-minded car. A whitewall can create a more formal period-style look, while blackwall or redline can give a more restrained or sporting presentation. The best approach is to pair the correct size first, then choose the sidewall treatment that suits the build.
What brands offer tires for the 1970 Peugeot 404?
Tires for the 1970 Peugeot 404 are available from several brands, including Coker Classic, American Classic, Firestone, BFGoodrich, Michelin, Avon, Vredestein, and Universal Vintage Tire. Brand availability depends on the size, with the 165R15 radial category showing the broadest assortment and the other sizes offering more focused choices.
Brand name is only one part of the decision on a 404. It is usually more useful to compare the tire's construction, sidewall style, series character, and wheel-width suitability within the correct size for the car. Once the right fitment is narrowed down, brand preference can be weighed alongside the desired look and intended road use.
Restoration & Appearance
Which tire should I choose for a period-style 1970 Peugeot 404?
A period-style 1970 Peugeot 404 choice starts with the proper size for the body style, then with the construction that suits the look you want. Sedan & Convertible models can follow either 590-15 bias-ply or 165R15 radial fitment, while Wagon models use 6.50-15 bias-ply or 185R15 radial sizing. Bias-ply tires generally deliver the most traditional visual presentation.
That does not mean a radial is automatically out of place on a restoration-minded 404, especially on a car built in an era when European radials were already well established. The best result comes from matching the body style, wheel setup, and intended appearance first. When exact originality matters, marque-specific historical references are worth consulting before making the final call.
How does tire construction affect the appearance of a restored 1970 Peugeot 404?
Tire construction changes the appearance of a restored 1970 Peugeot 404 as much as the sidewall treatment does. A bias-ply size such as 590-15 or 6.50-15 tends to support a more traditional vintage presentation, while radial sizes like 165R15 and 185R15 bring a later European touring look that still fits the character of the car.
The effect becomes even more noticeable once sidewall style is added to the equation. Blackwall keeps the look restrained, whitewalls introduce a more formal visual accent, and redline gives certain 185R15 options a sportier flavor. The most convincing restoration result usually comes from treating size, construction, and sidewall style as one combined appearance decision.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1970 Peugeot 404?
Yes, modifications can affect tire fitment on a 1970 Peugeot 404 even when the nominal tire size seems correct. Aftermarket wheels, changes in wheel width, suspension work, lowering, brake conversions, or body repairs can all alter how much room the tire has. That matters on a car with multiple fitment paths across Sedan, Convertible, and Wagon body styles.
A careful check should include wheel diameter, wheel width, visible clearance at full steering lock, and space around the fenders and suspension. On an older Peugeot, it is also smart to inspect for uneven ride height or worn suspension parts that may change tire position under load. Those checks matter before mounting either bias-ply or radial tires.
What should I inspect before driving a 1970 Peugeot 404 on new tires?
Before driving a 1970 Peugeot 404 on new tires, inspect the wheels, valve stems, and the condition of the suspension and steering components. Make sure the tire size matches the correct body style, confirm that each wheel is the proper 15-inch diameter, and verify that inflation is appropriate for the tire being used. A visual check for any rubbing point is worthwhile as well.
The first few drives should be treated as a fitment check, not just a test of the tires themselves. Listen for contact during turns, watch for unusual pull or vibration, and recheck air pressure after the car has been on the road. Collector cars that sit often can reveal wheel, brake, or suspension issues only after they begin moving again.
How should 1970 Peugeot 404 tires be maintained on a collector vehicle?
Tires on a collector 1970 Peugeot 404 should be maintained with regular pressure checks, periodic visual inspections, and close attention to age-related condition. Sidewall cracking, weather checking, cuts, bulges, uneven tread wear, or slow air loss deserve attention even if the car is driven only occasionally. Low annual mileage does not prevent tire aging.
Storage conditions matter almost as much as road use on a vintage Peugeot. Keeping the car away from prolonged sunlight, excess heat, moisture, and ozone sources helps preserve the tires between drives. It also helps to move the car periodically and inspect the contact patches, especially if it sits for long stretches, so developing problems are caught before the next outing.
