The 1957 Austin A 50 sits squarely in the postwar British family-car era, when practical sedans balanced modest size, everyday usability, and tidy road manners. For owners today, that charm often comes down to preserving the car’s proper stance and period character without overlooking drivability. Tire fitment for the 1957 Austin A 50 centers on two 13-inch choices: a 590-13 bias-ply size and a 165R13 radial. That opens up a meaningful decision between traditional wide-whitewall presentation and blackwall radial touring options from Michelin and Dunlop. The right choice depends on whether the goal is restoration-minded appearance, more modern road use, or a careful blend of both.
Which Tire Size Is Right for The 1957 Austin A 50
The 1957 Austin A 50 uses two primary tire sizes, both on 13-inch rims: 590-13 in bias-ply construction and 165R13 in radial construction. Since both sizes apply to the Base model, the key decision is less about sub-model identification and more about choosing the construction, appearance, and driving character that best suit the car’s current wheel setup and intended use.
165R13 is a Euro-metric radial size in which 165 refers to the nominal section width in millimeters, R identifies radial construction, and 13 is the wheel diameter in inches. On the 1957 Austin A 50, this size represents the more modern construction choice while still staying within the car’s 13-inch fitment. Available options are blackwall radials from Michelin and Dunlop, including Michelin XAS, Michelin XAS-FF, and Dunlop SP Sport Aquajet. This size is worth considering if the car is driven regularly and the goal is a radial setup that still looks appropriate to a vintage small sedan.
590-13 is a numeric bias-ply size in which 5.90 indicates the nominal section width in inches and 13 identifies the wheel diameter. For the 1957 Austin A 50, this is the traditional bias-ply fitment and the one that most directly supports a period-style tire presentation. The available option in this size uses the Silvertown Classic Bias Ply series with a 2.375-inch wide whitewall, giving the car a distinctly restoration-oriented look. This size deserves a close look when original-style stance, sidewall appearance, and vintage construction matter more than moving to a radial alternative.
Fitment is straightforward across the covered 1957 Austin A 50 sub-models because the same two 13-inch tire sizes appear here. Checking the sub-model still helps confirm whether the car is being kept in bias-ply form or has already moved to a radial setup.
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1957 Austin A 50 Base
The 1957 Austin A 50 Base uses both of the core fitment paths for this model: 590-13 bias-ply and 165R13 radial. That gives the owner a choice between a more traditional restoration-oriented tire presentation and a radial format that may better suit regular road driving, provided the wheel setup is compatible.
Bias-Ply to Radial Tire Conversion for the 1957 Austin A 50
For the original 590-13 tire size, three radial-equivalent options are available. 165R13 is the 80-series metric radial equivalent, P165/75R13 is the P-metric 75-series radial alternative, and P175/70R13 is the P-metric 70-series radial option. These choices move from a classic Euro-metric format to lower-profile P-metric alternatives. A recommended rim-width range of 4 to 5 inches applies to these equivalents, so wheel width, overall dimensions, and clearance should all be checked before changing from the bias-ply size.
Modern Radial Equivalents
165R13
Equivalent 80-series Metric Radial (590-13)
P165/75R13
Equivalent P-metric 75-series Radial (590-13)
P175/70R13
Equivalent P-metric 70-series Radial (590-13)
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 1957 Austin A 50 Tires for Sale
Available 1957 Austin A 50 tire choices include Michelin and Dunlop blackwall radials in 165R13, along with a BFGoodrich wide whitewall bias-ply in 590-13. The product grid is where to compare construction, tire series, sidewall style, rim-width compatibility, and load-related details.
Common 1957 Austin A 50 tire questions usually come down to choosing between 590-13 and 165R13, understanding bias-ply versus radial construction, and confirming wheel fit before putting the car back on the road.
Tire Size & Fitment
What tire size fits a 1957 Austin A 50?
The 1957 Austin A 50 uses two primary tire sizes: 590-13 in bias-ply construction and 165R13 in radial construction. Both are 13-inch fitments, so the main difference is not wheel diameter but the tire’s sizing system, construction type, and the way the car is being equipped.
Choosing between them starts with the car’s current wheel setup and the owner’s goal. A 590-13 suits a more traditional period-style presentation, while 165R13 points toward a radial setup. It is smart to confirm wheel width, present tire clearance, and whether the car has remained stock or has already been changed over from its earlier construction style.
What size rim does a 1957 Austin A 50 use?
The tire fitments used on the 1957 Austin A 50 are built around a 13-inch rim diameter. Both the 590-13 bias-ply size and the 165R13 radial size share that same wheel diameter, which keeps the basic rim-size question simple compared with vehicles that changed diameters between trims.
Wheel diameter is only the first part of the fitment check. Rim width matters too, especially when comparing a narrower bias-ply setup with radial alternatives. Before selecting a tire, verify the actual wheel on the car rather than assuming it is original, since older British sedans are often fitted with replacement wheels after decades of service.
Does the 1957 Austin A 50 Base use the same tire size?
Yes. The 1957 Austin A 50 Base is associated with the same two tire-size paths used for this model: 590-13 bias-ply and 165R13 radial. That means the Base model does not introduce a separate wheel diameter or a unique size outside the core fitment range.
The practical question is which of those two paths matches the car in front of you. Some owners want the traditional bias-ply look, especially with a wide whitewall, while others prefer a blackwall radial format. Confirming what is currently mounted and checking the wheel width will help narrow the choice without treating both constructions as automatically interchangeable.
Bias-Ply & Radial Options
Is 590-13 a bias-ply or radial tire for the 1957 Austin A 50?
590-13 is a bias-ply tire size on the 1957 Austin A 50. It uses the older numeric sizing format common to mid-century vehicles, and in this application it represents the traditional construction choice rather than a modern radial layout.
That matters because a bias-ply tire affects both the car’s appearance and the kind of replacement options available. The 590-13 offering here uses a wide whitewall and a restoration-oriented bias-ply presentation. Anyone moving away from that construction should compare wheel width, tire dimensions, and clearance carefully instead of assuming any radial alternative will behave the same on the car.
What radial tire sizes are equivalent to 590-13?
Radial equivalents for 590-13 include 165R13 as an 80-series metric radial, P165/75R13 as a P-metric 75-series radial, and P175/70R13 as a P-metric 70-series radial. Those sizes provide three different radial-format alternatives while staying within the 13-inch wheel family.
Each equivalent should be treated as a comparison point rather than an automatic replacement. The recommended rim-width range attached to these equivalents is 4 to 5 inches, so the wheel needs to be checked before conversion. It also helps to compare the car’s present clearance at the fenders and steering components, especially if the suspension or wheels have changed over time.
Should I use bias-ply or radial tires on a 1957 Austin A 50?
That depends on what matters most for the car. A 590-13 bias-ply tire supports a more traditional vintage look, while 165R13 gives the 1957 Austin A 50 a radial fitment path in the same 13-inch diameter. Both sizes belong to this model, but they serve different ownership priorities.
A restoration-minded car may lean toward the bias-ply option for period-style appearance, especially with a wide whitewall. A regularly driven car may push the decision toward a radial setup instead. The safest approach is to match the tire choice to the actual wheel width, current chassis condition, and how the car will be used rather than choosing by construction type alone.
Choosing the Right Tire
What should I consider when choosing a tire for a 1957 Austin A 50?
Start with the correct size and construction for the way the car is set up. The 1957 Austin A 50 can use either 590-13 bias-ply or 165R13 radial, both on 13-inch rims, so the decision centers on whether the car is staying with a traditional bias-ply presentation or moving to a radial format.
After that, compare the wheel width, sidewall style, and how the car will actually be driven. A wide whitewall bias-ply creates a different visual effect than a blackwall radial from Michelin or Dunlop. Looking at load-related details and product dimensions alongside the car’s current wheel setup helps keep the choice practical as well as visually appropriate.
What sidewall styles are available for 1957 Austin A 50 tires?
The available sidewall styles for the 1957 Austin A 50 are blackwall and wide whitewall. Blackwall choices appear in the 165R13 radial offerings, while the 590-13 bias-ply option uses a 2.375-inch wide whitewall for a more traditional vintage presentation.
That sidewall difference can shape the whole look of the car even when the wheel diameter stays the same. Owners restoring a mid-century sedan often focus on whitewall presence, while drivers aiming for a simpler or more understated look may prefer blackwall radials. Matching the sidewall style to the car’s trim, paint, and intended character usually helps narrow the decision quickly.
What brands offer tires for the 1957 Austin A 50?
Tires for the 1957 Austin A 50 are available from Michelin, Dunlop, and BFGoodrich. Michelin and Dunlop cover the 165R13 radial side of the fitment, while BFGoodrich supplies the 590-13 bias-ply option with a wide whitewall appearance.
Brand choice should still come after confirming the right size and construction. Once that is settled, the comparison becomes more useful: Michelin and Dunlop represent blackwall radial paths, while BFGoodrich serves the traditional bias-ply route. Looking at tire series, sidewall treatment, wheel-width compatibility, and load-related specifications will do more for the decision than brand name alone.
Restoration & Appearance
Which tire should I choose for a period-style 1957 Austin A 50?
For a period-style 1957 Austin A 50, the 590-13 bias-ply size is the natural starting point. Its vintage numeric format and available wide whitewall presentation align more closely with the sort of tire appearance many owners want when preserving a distinctly 1950s look.
That does not make every bias-ply tire automatically correct for a historically exact restoration. If originality is especially important, it helps to compare the selected size, sidewall treatment, and overall visual profile against marque literature or club guidance. For many owners, though, the key is preserving the car’s stance and era-appropriate character without drifting into a modern-looking tire package.
How does tire construction affect the appearance of a restored 1957 Austin A 50?
Tire construction changes more than ride feel on a restored 1957 Austin A 50; it also changes the visual impression of the car. A 590-13 bias-ply with a wide whitewall gives a distinctly traditional look, while a 165R13 radial in blackwall form presents a cleaner, more modern road-going appearance.
That difference becomes noticeable in sidewall shape, overall presence, and how the tire complements the wheel and body lines. Owners who want the car to read as unmistakably mid-century often focus on the bias-ply route first. Owners building a driver may accept a more modern-looking radial if the result still respects the car’s proportions and 13-inch wheel fitment.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1957 Austin A 50?
Yes. Even though the 1957 Austin A 50 uses 13-inch tire fitments, modifications can still change what works on the car. Replacement wheels, altered wheel width, suspension changes, lowering, or bodywork repairs can all influence how either a 590-13 bias-ply or 165R13 radial sits and clears.
A car that has been modified should be measured rather than assumed to match original specifications. Checking wheel width, steering clearance, and the available space around the fenders is especially important when changing construction type or trying a radial equivalent. Small vintage sedans do not leave much room for guesswork once parts have been changed from stock.
What should I inspect before driving a 1957 Austin A 50 on new tires?
Before driving a 1957 Austin A 50 on new tires, inspect the wheels, valve stems, and the condition of the suspension and steering components. Make sure the tires are inflated correctly for the chosen setup and confirm that there is no contact at the fenders, chassis, or steering linkage through the full range of motion.
A collector car should also be checked for long-sitting issues that are easy to miss, including loose wheel hardware, dried rubber parts, and uneven ride height. After the first few miles, it is wise to recheck pressure and look for any signs of rubbing or unusual wear. Early follow-up can catch a fitment problem before it becomes tire damage.
How should tires on a collector 1957 Austin A 50 be maintained?
Tires on a collector 1957 Austin A 50 should be maintained with regular pressure checks, visual inspections, and attention to age as well as tread depth. Low-use cars can still develop sidewall cracking, flat spotting, air loss, or internal deterioration even when the tires do not see many road miles.
Storage habits matter almost as much as driving habits. Keeping the car away from prolonged sunlight, moisture, and ozone sources helps preserve the rubber, and occasional movement can reduce stress from long stationary periods. It also pays to inspect the spare and confirm that the mounted tires still match the car’s intended setup, especially after years of intermittent ownership.