The 1964 Simca lineup reflected the practical, space-efficient spirit of postwar European motoring, and the Simca 1000 stood out as a compact rear-engine sedan with distinctly French character. For U.S. collectors, it is a small car with a surprisingly nuanced tire story, because 1964 Simca vehicles can be found with four different sizes tied to the same model rather than spread across multiple model lines. The real choice comes down to identifying whether your car is set up for 12-inch or 13-inch wheels, then deciding between bias-ply authenticity and radial road manners where that size pairing exists. Confirm the wheel diameter on your car before narrowing the tire choice any further.
Which Tire Size Is Right for Your 1964 Simca
Four tire sizes are used on 1964 Simca vehicles, and all of them apply to the Simca 1000 rather than being split across different models. The key decision is confirming whether your car has 12-inch or 13-inch wheels first, then choosing between bias-ply and radial construction within the size family that matches your rims. Understanding that distinction before choosing a product saves time and helps you match the tire to the car correctly.
Year(s): 1964|Fit(s): 1000|Construction: Radial|Rim: 13 in
145R13 is a metric radial size with a nominal section width of 145 millimeters and a 13-inch rim diameter; in this format, the absent aspect ratio is conventionally treated as an 80-series profile. This size is available from Michelin and Firestone in Blackwall form, and the products shown here are tubeless, with Michelin carrying an H speed rating at 130 mph while Firestone uses a different sidewall marking. Buyers who want a radial feel in a 13-inch fitment should focus here, especially for regular road use where modern radial behavior is often preferred. Rim width coverage in this size runs from 4.00 to 5.00 inches where specified.
Year(s): 1964|Fit(s): 1000|Construction: Bias Ply|Rim: 13-in rim
5.50-13 is a numeric bias-ply size in which 5.50 refers to the nominal section width and 13 identifies the rim diameter. Bias-ply construction makes this a period-style choice for the Simca 1000, and it is specific to cars using 13-inch wheels rather than universal across every wheel setup found on the year. This size is the natural direction for owners who want an era-appropriate look and driving character on a 13-inch rim. Confirm the actual wheel diameter on the car before choosing it over the radial 145R13.
Year(s): 1964|Fit(s): 1000|Construction: Radial|Rim: 12-in rim
155R12 is a metric radial size with a nominal section width of 155 millimeters and a 12-inch rim diameter; as with other Euro-metric radial sizes of this type, the profile is conventionally treated as an 80-series. This size is specific to Simca 1000 applications running 12-inch wheels, and it represents the radial alternative within that smaller wheel diameter. Owners choosing this size are generally matching a 12-inch wheel setup while keeping the road manners associated with radial construction. Wheel diameter matters more here than model identity, since the 1964 Simca range at this level centers on the same model.
Year(s): 1964|Fit(s): 1000|Construction: Bias Ply|Rim: 12-in rim
5.60-12 is a numeric bias-ply size with a nominal section width of 5.60 inches and a 12-inch rim diameter. This size is specific to Simca 1000 cars fitted with 12-inch wheels, giving owners a bias-ply option within that wheel family rather than across the whole year and make. It suits restorations that prioritize period-correct construction and appearance on a 12-inch setup. Verifying the wheel diameter first is the step that separates it from the 13-inch choices.
One model is covered for 1964 Simca: the Simca 1000. Even with a single model in the range, tire choice is not completely automatic, because the Simca 1000 appears with both 12-inch and 13-inch fitments and with either bias-ply or radial construction depending on the wheel setup. Select the model below for Simca 1000-specific fitment history and tire options.
1964 Simca 1000
The 1964 Simca 1000 was a compact rear-engine French sedan known for tidy dimensions, light weight, and a distinctly European driving character. Its tire story is more varied than many single-model pages, because the car appears with both 12-inch and 13-inch wheel diameters depending on configuration. That makes wheel diameter the first thing to verify before deciding whether to stay with a bias-ply presentation or move to a radial setup in the matching size family.
Two products are available across one tire size for 1964 Simca vehicles. In 145R13, Michelin and Firestone cover the radial 13-inch fitment in Blackwall form. Confirm your wheel diameter and preferred construction before choosing, since other 1964 Simca sizes use different rim diameters.
These answers focus on the 1964 Simca tire choices that matter most: 12-inch versus 13-inch fitment, bias-ply versus radial construction, available blackwall radial options, and the storage and inspection habits that help a lightly used collector car stay road-ready.
Size Basics & Fitment
What tire sizes fit 1964 Simca vehicles?
1964 Simca vehicles in this guide center on the Simca 1000, which uses four tire sizes: 145R13, 5.50-13, 155R12, and 5.60-12. The 145R13 and 5.50-13 sizes mount on 13-inch wheels, while 155R12 and 5.60-12 mount on 12-inch wheels. Where rim width is stated, 145R13 works on 4.00- to 5.00-inch rims.
That means a 1964 Simca owner should not choose by year alone. The first checkpoint is the wheel diameter actually on the car, because the size families split cleanly between 12-inch and 13-inch rims. Once that is confirmed, the remaining choice is usually whether you want a bias-ply tire for an earlier look and feel or a radial for more familiar road behavior.
What does 145R13 mean on a 1964 Simca tire?
On a 1964 Simca tire, 145R13 is a Euro-metric radial size. The 145 identifies the nominal section width in millimeters, the R indicates radial construction, and the 13 identifies the wheel diameter in inches. In this style of metric sizing, the profile is conventionally treated as an 80-series when no aspect ratio is printed.
For a Simca 1000 owner, that decoding helps separate it from the older numeric bias-ply format. A 145R13 tire belongs only on a 13-inch wheel and represents the radial option in that diameter. If your car currently wears 13-inch wheels and you want to stay with a metric radial size that suits regular road use, 145R13 is the size to compare first.
What does 5.50-13 mean on a 1964 Simca tire?
On a 1964 Simca tire, 5.50-13 is a numeric bias-ply size. The 5.50 refers to the nominal section width in inches, and the 13 identifies the rim diameter in inches. Unlike a metric radial code, there is no R in the size because the format itself is associated with traditional bias-ply construction.
That distinction matters because a 5.50-13 is not just another way of writing 145R13. Both belong to 13-inch wheels, but they reflect different construction types and different restoration goals. Owners aiming for a period-style presentation often start with the numeric bias-ply size, while drivers seeking a radial in the same wheel diameter typically compare against 145R13 instead.
Buying the Right Tire
Should I choose the 5.50-13 or the 145R13 for my 1964 Simca?
For a 1964 Simca running 13-inch wheels, the choice between 5.50-13 and 145R13 is mainly a construction choice. The 5.50-13 is a numeric bias-ply size that suits an era-correct presentation, while 145R13 is a radial metric size used by modern reproduction and specialty radial offerings. Both belong to the 13-inch side of the Simca 1000 fitment range.
A restoration owner who wants the car to look and feel closer to its original period character will usually lean toward the bias-ply route. A driver who expects more familiar tracking and general radial road manners will usually compare 145R13 options instead. The decision only makes sense after you confirm that your Simca actually has 13-inch wheels rather than the 12-inch setup.
What sidewall styles are available for 1964 Simca tires?
For the 1964 Simca products covered here, 145R13 is available as a Blackwall radial from Michelin and Firestone. Blackwall styling is especially consistent with the compact European character of the Simca 1000, which was not a whitewall-centered design in the American luxury-car sense. The radial offerings in this size keep that restrained appearance.
Sidewall style matters because it affects the car's visual balance as much as the size itself. Owners restoring a Simca 1000 often want a clean, understated sidewall that does not overpower the car's small proportions. If appearance is part of the goal, match the sidewall style to the period and market character of the car before narrowing your choice by brand.
What brands make tires for 1964 Simca vehicles?
Michelin and Firestone both make tires for 1964 Simca applications in 145R13 radial form. Michelin appears here with the XAS FF series, while Firestone covers the same size with the F560 Radial. Both are blackwall 13-inch radial options for the Simca 1000.
Brand choice on a small European car often comes down to the kind of driving experience and presentation you want rather than to basic fitment alone. Michelin has especially strong period resonance with French and continental European cars, while Firestone gives another radial path in the same size. After confirming 145R13 is your wheel diameter, compare the sidewall marking, speed rating, and rim-width suitability before deciding.
Fitting & Setup
What rim width do 1964 Simca tires require?
Rim-width guidance for 1964 Simca tires is size-specific. In 145R13, the supported rim width range runs from 4.00 to 5.00 inches. The rest of the Simca 1000 sizes in this guide still need to match their correct wheel diameter, but the wheel-width figure should be verified against the actual product and wheel combination you intend to use.
That makes wheel measurement a practical part of the buying process, especially on a car that may have changed wheels over the decades. Diameter tells you whether you are in the 12-inch or 13-inch family, while width affects how comfortably a particular tire sits on the rim. If your wheel width falls outside a published range, pause and confirm fitment before moving ahead.
Do 1964 Simca tires require inner tubes?
Inner-tube requirements on 1964 Simca tires depend on the exact size and product. The 145R13 radial products covered here are tubeless, including the Michelin 145HR13 74H TL marking. Tube use for the other Simca 1000 sizes should be matched to the tire's sidewall marking and the wheel's construction rather than assumed from year alone.
That matters because tube choice is really a tire-and-wheel system decision. A tubeless tire on a sound tubeless-style wheel is one situation, while an older wheel design may call for a different approach even when the vehicle is the same. Before final installation, check the sidewall designation on the exact tire and inspect the wheel condition, valve-hole area, and bead surfaces carefully.
Maintenance, Storage & Longevity
How should I store a 1964 Simca when the tires are fitted?
A 1964 Simca stores best in a cool, dry, dark space away from direct sunlight, electric motors, battery chargers, welders, and other ozone-producing equipment. Keep the tires clean, maintain inflation, and move the car periodically so one contact patch is not carrying the load for months at a time. Bias-ply tires tend to flat-spot more readily in long static storage than radials, so storage habits matter even more when a Simca 1000 wears numeric bias-ply sizes.
Collectors who leave the car parked for a season should think about the whole environment, not just the rubber itself. Moisture, ultraviolet exposure, and repeated weight concentration all age tires faster on a lightly used classic. If the car will sit for an extended period, occasional rolling or carefully supporting the vehicle can help reduce stress on the carcass and preserve better road feel when driving resumes.
How long do tires on a 1964 Simca typically last?
On a 1964 Simca, tire life should be judged more by age and condition than by miles traveled. A collector car tire should be evaluated closely once it reaches roughly five to seven years of age, and many owners begin planning replacement as it approaches the ten-year mark regardless of remaining tread depth. The DOT date code on the sidewall is the starting point for that timeline.
That approach is especially important on a low-mileage Simca 1000 because a tire can look usable while still aging internally. Long periods of storage, heat cycles, and environmental exposure all affect the structure over time. If the tires are older and the car is being returned to road use after a quiet period, age should weigh as heavily in the decision as tread wear or cosmetic appearance.
How often should tires on a 1964 Simca be inspected?
Tires on a 1964 Simca should be inspected before every drive and more thoroughly before any longer outing. Look for sidewall cracking, tread separation, punctures, bulges, uneven wear, and any sign that the tire is losing pressure between uses. On wheels using tube-type arrangements, the valve stem and tube-related hardware deserve the same attention as the outer tire.
A short local drive can hide problems that become obvious only after heat builds in the casing at sustained speed. Regular inspection also helps catch alignment or wheel issues early, which matters on a small rear-engine car where chassis feel is a big part of the driving experience. Five minutes in the garage before departure is often enough to spot trouble before it reaches the road.
Restoration & Authenticity
What tires were originally fitted to the 1964 Simca Simca 1000?
A 1964 Simca Simca 1000 would have been rooted in an era when bias-ply construction was still standard on many compact cars, especially in original-delivery form, even though radial technology was already strongly associated with European manufacturers. Within the size range used on the car, the numeric sizes 5.50-13 and 5.60-12 represent that period style most directly. Original-equipment branding should be confirmed through factory literature or Simca marque resources if exact market delivery matters to your restoration.
That means restoration goals should guide the first step. If the car is being judged for authenticity, construction type and size family both matter, and the correct answer may differ depending on whether the car is on 12-inch or 13-inch wheels. If the goal is a faithful road car rather than a strict show car, owners often begin by confirming wheel diameter and then choosing the construction that best matches the car's intended use.
Does correct tire fitment matter for showing a 1964 Simca?
Correct tire fitment absolutely matters when a 1964 Simca is prepared for judging. Size, construction type, sidewall appearance, and overall visual proportion all affect whether the car reads as properly restored. A modern radial on a car judged for strict originality can attract attention for the same reason an obviously modern sidewall treatment would, even if the wheel diameter is correct.
Show standards vary by event, so the smartest path is to match the tire to the level of authenticity your venue expects. Some owners prioritize period-correct numeric bias-ply sizing, while others accept a radial if the car is presented as a sympathetic road restoration rather than a concours piece. Before making the final call, check with Simca clubs or event organizers for market-specific and class-specific expectations.
What is the difference between Michelin XAS FF and Firestone F560 Radial for the 1964 Simca?
For a 1964 Simca in 145R13, Michelin XAS FF and Firestone F560 Radial share the same basic 13-inch radial fitment and blackwall presentation, but they differ in details. The Michelin carries a 145HR13 74H TL marking, which includes an H speed rating up to 130 mph, while the Firestone is marked 145R13 and includes a published load figure of 825 pounds at 44 psi. Firestone also carries a stated rim-width range of 4.00 to 5.00 inches.
Those differences matter when you are matching the tire to how the car will be used and how closely you want to compare published specifications. One owner may care most about the Michelin sidewall marking and speed symbol, while another may value the Firestone's clearly stated rim-width and load information. Since both are 145R13 blackwall radials, the decision usually comes down to spec preference rather than basic fitment.
Safety & Road Use
Are 1964 Simca tires safe for highway driving?
1964 Simca tires can be suitable for highway driving when they are the correct size, in sound condition, and used within their construction and speed-rating limits. In the 145R13 radial offerings covered here, the Michelin 145HR13 carries an H rating, which corresponds to 130 mph. Real-world safety in a Simca 1000 also depends heavily on the car's own brakes, steering, suspension, wheel condition, and overall mechanical freshness, not just the tire's printed speed symbol.
For most owners, highway confidence comes from the entire package being healthy and correctly matched rather than from chasing the highest rating. A fresh radial may feel more familiar at modern road speeds, while a bias-ply setup asks for more awareness of vintage handling traits. Before any sustained highway use, make sure the tires are age-appropriate, properly inflated, and free from visible damage or pressure loss.
What inflation pressure should I use for 1964 Simca tires?
Inflation pressure on a 1964 Simca should follow the factory recommendation for the car and the operating limits of the exact tire you choose. In 145R13 Firestone radial form, the published maximum load and pressure figure is 825 pounds at 44 psi, but that is not the same thing as a blanket running-pressure recommendation for every Simca tire. Pressure should always be matched to the specific size, construction, and vehicle setup.
A smart approach is to start with the original owner's manual or factory placard for the vehicle, then compare that guidance against the tire manufacturer's markings and specifications. Do not transfer a pressure figure from a 13-inch radial to a 12-inch tire or from a radial to a bias-ply equivalent. If the car has been modified or carries unusual loading, revisit the pressure choice with that configuration in mind.
What should I check before taking a 1964 Simca on a longer drive?
Before a longer drive in a 1964 Simca, inspect each tire for cracking, cuts, bulges, irregular wear, embedded debris, and stable inflation pressure. Check the valve stems, confirm lug fasteners are secure, and make sure the spare is usable rather than just present. If the car uses a tube-type arrangement, include the valve hardware and any signs of heat or pressure loss in the inspection routine.
That tire check should sit inside a broader old-car pre-drive routine. On a compact rear-engine car such as the Simca 1000, steering feel, braking consistency, wheel-bearing condition, and basic fluid checks all matter just as much once the trip moves beyond local roads. A careful walk-around and short shakedown drive before departure can reveal issues early, when they are still easy to correct.
