The 1974 Austin Marina came from a period when compact British cars had to balance everyday practicality with a little sporting character, and the Marina remains familiar to enthusiasts who appreciate straightforward mechanicals and clean 1970s proportions. Tire choice on this car is more nuanced than it first appears, because 1974 Marina fitment includes both a 155R13 radial and a 560-13 bias-ply, each on a 13-inch rim. That opens the door to different period-style looks and driving priorities, from blackwall radials to whitewall bias-ply options. The right direction depends on whether the goal is traditional appearance, retained original-type construction, or a carefully checked radial alternative.
Which Tire Size Is Right for The 1974 Austin Marina
The 1974 Austin Marina uses two primary tire sizes, and the choice starts with identifying whether the car is staying with its radial fitment or its bias-ply fitment. Both sizes mount on a 13-inch rim, so the decision is less about wheel diameter and more about construction type, appearance, and the exact wheel setup already on the car.
155R13 is a Euro-metric radial size in which 155 refers to nominal section width in millimeters, R indicates radial construction, and 13 identifies the wheel diameter in inches. On a 1974 Austin Marina, this size represents the radial side of the car's fitment and suits buyers who want a period European tire format rather than a vintage numeric bias-ply. Available choices center on blackwall radials from Michelin and Dunlop in series such as Michelin XAS-FF and SP Sport Aquajet. This size is worth considering when preserving a traditional compact European presentation with radial construction already in mind.
560-13 is a numeric bias-ply size, with the 560 designating nominal section width in the older inch-based system and 13 identifying the wheel diameter. For the 1974 Austin Marina, it carries the traditional bias-ply construction choice and presents a distinctly vintage look compared with the radial alternative. Product selection includes BFGoodrich and Firestone offerings in series such as Silvertown Classic Bias Ply and Firestone Classic Bias Ply, with narrow whitewall and wide whitewall sidewall treatments available. This size makes the most sense when period-style appearance and bias-ply character are central to the car's overall presentation.
Sub-model fitment is straightforward here, because the covered Marina sub-model shares the same two primary tire-size paths used on the model overall. Checking the exact sub-model still matters, especially when deciding whether the car is being kept in radial form or bias-ply form for appearance and use.
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1974 Austin Marina GT
The 1974 Austin Marina GT uses the same 13-inch tire-size choices found on the model overall, with both 155R13 radial and 560-13 bias-ply fitment represented. That gives GT owners a choice between blackwall radial products and more traditional whitewall bias-ply options, with wheel width and overall vehicle setup worth confirming before changing construction.
Bias-Ply to Radial Tire Conversion for the 1974 Austin Marina
For the original 560-13 size, three radial-equivalent options are available. 155R13 is the 80-series metric radial equivalent, P155/75R13 is the P-metric 75-series radial equivalent, and P155/70R13 is the P-metric 70-series radial equivalent. These options move from a traditional Euro-metric radial format to progressively more modern P-metric sizing conventions and profile choices. A 4-5 inch rim-width range is associated with these equivalents, and any change should still be checked against wheel dimensions and clearance on the car.
Modern Radial Equivalents
155R13
Equivalent 80-series Metric Radial (560-13)
P155/75R13
Equivalent P-metric 75-series Radial (560-13)
P155/70R13
Equivalent P-metric 70-series Radial (560-13)
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 1974 Austin Marina Tires for Sale
Available 1974 Austin Marina tire choices cover both radial and bias-ply construction, with Michelin and Dunlop blackwall radial options in 155R13 and BFGoodrich or Firestone whitewall bias-ply options in 560-13. The product grid is where sidewall style, tire series, and rim-width compatibility become easiest to compare.
Common 1974 Austin Marina tire questions usually come down to choosing between 155R13 and 560-13, understanding radial versus bias-ply fitment, and checking wheel, appearance, and road-use considerations before making a change.
Tire Size & Fitment
What tire size fits a 1974 Austin Marina?
A 1974 Austin Marina uses two primary tire sizes: 155R13 in radial construction and 560-13 in bias-ply construction. Both sizes are built for 13-inch rims, but they represent different sizing systems and different approaches to the car's overall setup and appearance.
The practical next step is deciding whether the car should remain with its current construction type or move to an equivalent radial alternative from the bias-ply side. Wheel width, suspension condition, and the visual style you want from the car all matter before settling on one path.
What size rim does a 1974 Austin Marina use?
The 1974 Austin Marina uses a 13-inch rim with both of its primary tire sizes, 155R13 and 560-13. Even though the tire constructions differ, the wheel diameter itself stays consistent across those fitment choices.
That consistency simplifies one part of the decision, but rim width still needs attention because the available radial and bias-ply products are not built around the same wheel-width ranges. Measuring the actual wheels on the car is especially important if they have ever been replaced or refinished.
Does the 1974 Austin Marina GT use the same tire size?
Yes. The 1974 Austin Marina GT follows the same overall fitment pattern, using 155R13 as the radial size and 560-13 as the bias-ply size. Both are 13-inch fitments, so the distinction is driven by construction type rather than by a different wheel diameter.
That means GT owners are making essentially the same tire decision as other Marina owners: preserve the existing style of fitment or evaluate a different construction carefully. Checking the wheels already on the car remains worthwhile, since actual wheel width can affect which products are appropriate.
Bias-Ply & Radial Options
Is 560-13 a bias-ply or radial tire for the 1974 Austin Marina?
560-13 is a bias-ply tire size on the 1974 Austin Marina. It uses the older numeric sizing format and represents the vintage construction choice, while 155R13 is the radial fitment used alongside it on the same model year.
That matters because changing from 560-13 to a radial alternative is more than a simple naming change. The car's wheel width, the dimensions of the replacement tire, and the clearance available around the fenders and steering components should all be reviewed before making the switch.
What radial tire sizes are equivalent to 560-13?
Radial equivalents for 560-13 include 155R13 as an 80-series metric radial, P155/75R13 as a 75-series P-metric radial, and P155/70R13 as a 70-series P-metric radial. These are alternative radial size formats that correspond to the original bias-ply fitment rather than additional primary factory-type sizes.
The useful distinction is that each equivalent follows a different sizing convention and profile family, so the decision is not only radial versus bias-ply. A 4-5 inch rim-width range is associated with these equivalents, and overall compatibility should still be confirmed on the actual wheel and vehicle setup.
What should I check before converting my 1974 Austin Marina from bias-ply to radial tires?
Start by confirming the actual wheel diameter and width, then compare the radial equivalent you are considering for the 560-13 fitment. The available equivalents are 155R13, P155/75R13, and P155/70R13, and each should be treated as an alternative that still requires a physical fitment check.
Clearance at the fenders and steering, the condition of suspension components, and the intended road use all deserve attention before conversion. It also helps to decide whether the goal is a more traditional visual presentation or a modern radial format, because those priorities can point toward different choices.
Choosing the Right Tire
What should I consider when choosing a tire for a 1974 Austin Marina?
The first consideration is whether the car should use its 155R13 radial fitment or its 560-13 bias-ply fitment. From there, the decision narrows to wheel-width compatibility, the construction you want to retain, and whether the car's appearance should lean toward blackwall radial style or whitewall bias-ply presentation.
It also helps to think about how the Marina will be used. A restoration-minded owner may prioritize traditional sizing and sidewall appearance, while a driver-focused owner may prefer staying with radial construction. Either way, confirm the exact wheels on the car before comparing individual products.
What sidewall styles are available for 1974 Austin Marina tires?
Sidewall choice depends on the tire size you select. In 155R13 radial form, the available options are blackwall tires, while the 560-13 bias-ply choices include narrow whitewall and wide whitewall styles, giving the Marina a more traditional visual range.
That makes sidewall treatment one of the clearest visual decisions on this car. A blackwall radial keeps the look simple and European, while whitewall bias-ply tires create a more vintage presentation. Matching the sidewall style to the car's trim, paint, and restoration direction usually produces the most satisfying result.
What brands offer tires for the 1974 Austin Marina?
The 1974 Austin Marina has tire options from Michelin and Dunlop in 155R13 radial form, along with BFGoodrich and Firestone choices in 560-13 bias-ply form. Those brands cover both of the primary fitment directions used on the car.
Brand should be considered alongside size, construction, sidewall style, and tire series rather than in isolation. Michelin XAS-FF and SP Sport Aquajet products serve the radial side, while Silvertown Classic Bias Ply and Firestone Classic Bias Ply represent the bias-ply side of the selection.
Restoration & Appearance
Which tire should I choose for a period-style 1974 Austin Marina?
A period-style 1974 Austin Marina can be approached from either of its primary fitments, depending on the look and driving feel you want to preserve. The 560-13 bias-ply size delivers the more overtly vintage presentation, while 155R13 keeps the car within a traditional European radial format.
The better choice depends on how closely the car is being restored and what wheel setup it currently carries. For owners chasing exact historical accuracy, marque-specific references and period photographs are still valuable, because a correct size alone does not automatically settle sidewall treatment or brand presentation.
How does tire construction affect the appearance of a restored 1974 Austin Marina?
Tire construction changes the visual character of a restored 1974 Austin Marina more than many owners expect. A 560-13 bias-ply with narrow or wide whitewall treatment creates a distinctly vintage look, while a 155R13 blackwall radial gives the car a cleaner, more understated European presentation.
Those differences matter even when the wheel diameter stays the same. Sidewall shape, tread style, and the presence or absence of a whitewall all influence how the car sits visually. Choosing the tire after the wheel finish and trim direction are settled usually leads to a more coherent restoration result.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1974 Austin Marina?
Yes. A 1974 Austin Marina may have no trouble with its intended tire size on stock wheels, but aftermarket wheels, altered ride height, suspension changes, or bodywork repairs can all change the space available for a 155R13 or 560-13 tire.
That is why tire selection should begin with the car as it sits now, not only with the catalog size. Measure wheel width, check steering travel, and look closely at fender and suspension clearance before changing construction or moving to a radial equivalent from the original bias-ply fitment.
What should I inspect before driving a 1974 Austin Marina on new tires?
Before putting a 1974 Austin Marina back on the road, inspect the wheels for damage or corrosion, confirm proper tire mounting, and check that the new tires clear the car through full steering movement. It also helps to verify valve stems, lug hardware, and basic suspension condition at the same time.
A short test drive should be followed by another look for rubbing, uneven stance, or signs of air loss. Collector cars often spend long periods parked, so catching alignment issues, dried bushings, or brake drag early can prevent a new set of tires from wearing poorly.
How should tires on a collector 1974 Austin Marina be maintained?
Collector-car tires on a 1974 Austin Marina should be checked regularly for pressure, tread condition, sidewall cracking, cuts, bulges, and any signs of slow air loss. Low-mileage use does not stop rubber from aging, so appearance and structural condition both deserve attention over time.
Storage habits matter almost as much as mileage. Keeping the car away from prolonged sunlight, excessive heat, moisture, and ozone sources helps preserve the tires, and periodic movement can reduce flat-spotting. Any tire showing age-related deterioration should be evaluated before regular road use resumes.