1964 Sunbeam Tire Fitment Guide

1964 Sunbeam vehicles use four sizes across two model lines. The Alpine uses 165R13 in radial form or 600-13 in bias-ply form, both on 13-inch rims. The Rapier uses 155R15 in radial form or 560-15 in bias-ply form, both on 15-inch rims. Rim width guidance also differs by size: 165R13 fits 4.50 to 6.00-inch rims, 600-13 fits 4.00 to 4.50-inch rims, 155R15 fits 4.00 to 5.50-inch rims on products where width is stated, and 560-15 fits 4.5 to 5.50-inch rims depending on brand.

The practical takeaway is that year and make alone are not enough for a 1964 Sunbeam. You need to identify whether the car is an Alpine or a Rapier first, because the wheel diameter changes with the model. After that, the remaining decision is whether you want the period character of a bias-ply tire or the more familiar road feel of a radial. Matching the tire to the actual wheel width is also important, especially on cars that may have had replacement wheels fitted over the years.

On a 1964 Sunbeam, 600-13 is a numeric bias-ply size. The 6.00 portion refers to nominal section width in inches, while the 13 refers to the wheel diameter in inches. On this year and make, 600-13 belongs to the Alpine rather than the Rapier, and the available tires use traditional bias-ply construction with narrow whitewall or wide whitewall sidewall treatments.

That matters because 600-13 is about more than diameter alone. It also signals an earlier style of tire construction and a different visual impression than a blackwall radial. If your Alpine is being restored for a period-correct appearance, this is the size that most closely aligns with that look. If your priority is a more modern driving character, the Alpine’s radial alternative is the other size to compare before making a final decision.

On a 1964 Sunbeam, both 165R13 and 155R15 are metric radial sizes. The first number is the section width in millimeters, the R indicates radial construction, and the final number is the rim diameter in inches. When no aspect ratio is printed in a size like this, it is conventionally treated as an 80-series radial. In the Sunbeam range, 165R13 is the Alpine radial fitment and 155R15 is the Rapier radial fitment.

Those codes help separate the two model families quickly. A 13-inch radial belongs with the Alpine, while a 15-inch radial belongs with the Rapier. They also tell you that these are later-style radial fitments rather than older numeric bias-ply sizes. That distinction becomes important when you compare sidewall appearance, wheel width compatibility, and the exact tube or speed-rating marking on the tire you are considering for your car.

No, 1964 Sunbeam models do not use the same tire size. The Alpine uses 13-inch fitments, either 165R13 radial or 600-13 bias-ply. The Rapier uses 15-inch fitments, either 155R15 radial or 560-15 bias-ply. That means both the tire size and the wheel diameter change from one model to the other, even before you get into construction choice.

For a buyer, that means the first fitment question is always model identification. If the car is an Alpine, the choice stays within the 13-inch family; if it is a Rapier, the correct choices stay within the 15-inch family. This is especially important on imported British cars, where later wheel swaps are not uncommon. Checking the tire currently on the car, the wheel diameter, and the car’s model designation together is the safest starting point before selecting a replacement.

A 1964 Sunbeam offers a radial and a bias-ply path within each model family rather than one universal size for every car. Alpine owners compare 165R13 radial against 600-13 bias-ply, while Rapier owners compare 155R15 radial against 560-15 bias-ply. The radial choices use blackwall styling, while the bias-ply choices in these sizes use whitewall styling. That makes the decision partly about construction and partly about the finished look of the car.

If your priority is preserving a mid-1960s appearance and feel, the bias-ply sizes are the natural place to start. If your priority is a later-style radial driving experience, the radial sizes fit that goal within the correct wheel diameter for each model. The key is not to compare Alpine and Rapier sizes against each other; compare the two choices within your own model family, then confirm that the wheel width and sidewall style suit the car you are building.

1964 Sunbeam tire choices include both blackwall and whitewall sidewall treatments, depending on size and construction. The radial sizes, 165R13 for the Alpine and 155R15 for the Rapier, are available in blackwall form. The bias-ply sizes, 600-13 and 560-15, are available with narrow whitewall and wide whitewall treatments. That gives a buyer a clear visual split between the radial and bias-ply options in this year and make.

For most 1964 British applications, blackwall tires tend to look the most understated and market-correct, especially on sportier cars such as the Alpine. Whitewalls can still suit a more personalized restoration or a certain showroom-era style, particularly on a more formal model like the Rapier. The best choice depends on how original you want the car to appear and which market impression you are trying to recreate. Sidewall style affects the visual personality of the car almost as much as the construction choice does.

Several brands cover 1964 Sunbeam fitments, and the mix changes by size. The Alpine’s 165R13 radial size is available from Michelin and Dunlop, while its 600-13 bias-ply size is available from BFGoodrich. The Rapier’s 155R15 radial size is available from Firestone and Michelin, and its 560-15 bias-ply size is available from Firestone and US Royal. That gives each model family both construction choices and brand variety within those choices.

Brand selection matters most after you have settled on the correct size and construction for your model. At that point, you can compare details such as sidewall treatment, tube marking, rim width range, and speed symbol where applicable. Michelin and Dunlop naturally fit the European flavor of a 1964 Sunbeam, while Firestone, BFGoodrich, and US Royal offer familiar American collector-tire options. The right answer depends less on badge preference than on whether the specific tire matches your car’s wheel, visual goal, and intended use.

Rim width requirements for 1964 Sunbeam tires depend on the size. Alpine radial 165R13 fits 4.50 to 6.00-inch rims, while Alpine bias-ply 600-13 fits 4.00 to 4.50-inch rims. Rapier radial 155R15 fits 4.00 to 5.50-inch rims on products where width is stated, and Rapier bias-ply 560-15 fits 4.5-inch rims in some applications and 4.50 to 5.50-inch rims in others. The key point is that the acceptable width range is not identical across all four sizes.

That is why wheel verification matters before replacing tires on a 1964 Sunbeam, especially if the car has been restored or modified. A tire can share the correct rim diameter and still want a different wheel width than another size for the same model. Measuring the wheel and comparing it to the tire’s approved width range is a better approach than assuming any 13-inch Alpine tire or any 15-inch Rapier tire will behave the same way. It also helps preserve proper profile, steering feel, and sidewall shape.

Inner-tube requirements on 1964 Sunbeam tires depend on the exact size and product. The Alpine’s 165R13 radial choices are tubeless where tube marking appears, while its 600-13 bias-ply products do not carry a tube-type or tubeless marking here. The Rapier’s 155R15 radial size varies by product, with both tube-type and tubeless examples, while the 560-15 bias-ply size does not show a tube marking here. That makes 155R15 the clearest case where tube status must be checked tire by tire.

On a British collector car, tube use also depends on the wheel itself, not just the tire. Original wheels, wheel condition, and wheel design can all affect whether a tubeless tire can actually be used tubeless in service. If you are working with a Rapier on 155R15, verify the sidewall marking on the exact tire you choose and inspect the wheel carefully. If you are restoring factory wheels, a marque specialist or experienced vintage tire installer can help determine the most appropriate setup.

Within each 1964 Sunbeam model family, the radial and bias-ply choices share the same rim diameter. The Alpine’s 165R13 and 600-13 both fit 13-inch wheels, and the Rapier’s 155R15 and 560-15 both fit 15-inch wheels. That means an original wheel can often remain in use when changing from one construction type to the other, provided the wheel is in sound condition and falls within the correct width range for the chosen tire.

Rim diameter compatibility does not automatically mean every wheel width is equally suitable for both options. On the Alpine, for example, the radial wants a broader width range than the bias-ply size. On the Rapier, width range can also vary by product within the same nominal size. Treat the original wheel as a starting point, then verify both diameter and width against the exact tire you intend to mount. That extra step avoids fitment surprises and helps the tire keep its intended shape on the car.

A stored 1964 Sunbeam should be kept in a cool, dry, dark space away from direct sunlight, standing water, electric motors, battery chargers, and other ozone sources that can age rubber. Maintaining correct inflation during storage is important, and rolling the car periodically helps prevent one spot on the casing from carrying the load for too long. Bias-ply tires on a 1964 Sunbeam are generally more prone to temporary flat-spotting during static storage than radial tires.

If the car will sit for a long period, many collectors either move it occasionally or support it in a way that reduces constant load on the tires. Clean, dry floors are better than bare earth, and tire dressings are not a substitute for proper storage conditions. A Sunbeam that is exercised gently and stored carefully tends to come back into service with fewer vibration, pressure-loss, and sidewall-aging issues than one that simply sits untouched between driving seasons.

On a 1964 Sunbeam, tire age matters more than mileage because many collector cars cover relatively few miles each year. A sensible rule is to begin evaluating tires closely once they reach roughly five to seven years of age, then treat ten years as a point where replacement deserves serious consideration even if the tread still looks usable. The DOT date code, overall condition, and storage history all matter more than odometer readings alone.

A lightly driven Alpine or Rapier can still out-age its tires before it wears them out. Sidewall cracking, hardening, vibration, and repeated air loss are often stronger warning signs than tread depth on a classic car. If the car’s age history is unclear, checking the date code should be one of the first steps in any inspection. Fresh-looking rubber is not always young rubber, especially on a vehicle that may have spent long stretches off the road.

Tires on a 1964 Sunbeam should be checked before every drive and inspected more thoroughly before any longer outing. Look for visible cracking, bulges, cuts, irregular tread wear, and changes in pressure retention. If your chosen tire setup uses tubes, the condition of the valve stems and the wheel itself also deserves attention. A quick pressure and visual check is a small task on a collector car, but it can prevent larger problems on the road.

Longer drives call for a more deliberate inspection because old cars place demands on tires that differ from modern daily drivers. A short local trip may hide a slow leak or a beginning sidewall issue that becomes obvious only after heat builds at speed. It is also wise to inspect the spare, since many classic cars still carry one that is far older than the four road tires. Routine inspections are one of the simplest ways to keep a 1964 Sunbeam dependable and enjoyable.

For a 1964 Sunbeam Alpine, bias-ply construction is the historically correct starting point for an originality-focused restoration, and 600-13 is the bias-ply size used in the Alpine range here. Radial options such as 165R13 are also available today, but a mid-1960s British sports car would have been associated first with bias-ply fitment in period. Original-equipment brand choice could vary by market and supply, so size and construction are usually the first authenticity questions to settle.

If you are restoring an Alpine for judged events, pay close attention not only to size but also to sidewall treatment and overall visual stance. An event focused on factory originality may view a modern radial differently from a car restored for driving enjoyment. Because British-market and export-market details can differ, a Sunbeam marque club or period sales literature is the best next step for confirming market-specific expectations. That extra research helps align the tire with the restoration’s intended standard.

Correct tire fitment absolutely matters when showing a 1964 Sunbeam, especially in classes that reward factory authenticity. Judges and knowledgeable enthusiasts often notice size, construction type, sidewall appearance, and the car’s overall stance before they notice subtler details. On a 1964 Sunbeam, using an Alpine 13-inch fitment on a Rapier or a Rapier 15-inch fitment on an Alpine would be an obvious mismatch, and changing from bias-ply to radial can also alter the car’s visual period character.

The exact standard depends on the event. A preservation-minded show may emphasize original-style bias-ply construction and era-appropriate sidewall treatment, while a touring-oriented event may be more accepting of a radial fitted for drivability. Either way, tire choice is part of the presentation, not an afterthought. Before finalizing a show car, compare your intended class rules with the tire’s construction and appearance, and consult Sunbeam enthusiast groups for guidance on what judges in your circle tend to value most.

For a 1964 Sunbeam Rapier, bias-ply construction is the historically correct baseline for a restoration built around original-era appearance, and 560-15 is the bias-ply size used in the Rapier range here. The radial alternative, 155R15, is a valid modern replacement path, but it reflects a later-style construction approach than the Rapier would typically have carried when new. In authenticity terms, construction and sidewall presentation usually matter before brand preference does.

That means a restorer should first decide whether the car is being judged for originality or prepared mainly for road use. A bias-ply Rapier with an era-appropriate whitewall treatment creates a distinctly mid-century look, while a blackwall radial changes that impression even if the wheel diameter remains correct. Because export specifications and owner preferences could vary, period photos and marque-club guidance are the best ways to refine the final choice once the correct size family has been identified.

1964 Sunbeam tires can be suitable for highway driving when they are the correct size, in good condition, properly inflated, and used within their intended speed capability. The radial choices carry the clearest speed markings here: 165R13 appears in H-rated form with a 130 mph ceiling, while 155R15 appears in T-rated form with a 118 mph ceiling and H-rated form with a 130 mph ceiling. The bias-ply sizes do not show speed symbols here, so they should be approached with the normal caution appropriate to vintage-style construction.

In real use, the condition of the car often matters as much as the tire. A 1964 Sunbeam’s brakes, suspension, steering, alignment, and wheel condition all influence how relaxed it feels on modern roads. Even when the tire’s speed symbol is generous, a vintage car is still happiest when driven within the limits of its overall design and maintenance state. Highway use should begin with a full inspection, a conservative road test, and an honest assessment of the car as a complete system.

Inflation pressure on a 1964 Sunbeam should be set by the vehicle manufacturer’s recommendation for the car and by the tire manufacturer’s guidance for the exact tire, rather than by copying one pressure from a different size. Some load-and-pressure figures are available here: 600-13 carries 1,010 pounds at 32 psi, 560-15 carries 970 pounds at 32 psi, and one 155R15 application carries 1,045 pounds at 44 psi. Those figures describe rated load conditions, not a universal running pressure for every Sunbeam tire.

That distinction matters because Alpine and Rapier fitments differ, and bias-ply and radial constructions often feel different even when mounted on the correct wheel. Using the owner’s manual or factory placard as your baseline is the right place to start, then compare that with the tire maker’s instructions for the exact product on the car. Avoid inflating one size to another size’s rated pressure simply because the numbers look familiar. Correct pressure should match the specific tire and the specific model.

Before a longer drive in a 1964 Sunbeam, inspect all five tires if the car carries a spare. Check for sidewall cracking, cuts, bulges, uneven wear, and any sign that a tire has been run underinflated. Verify cold pressures, look closely at the valve stems, and pay extra attention to any setup that uses tubes or older wheels. A tire that looks acceptable in the garage can still reveal age-related weakness once heat and sustained speed come into the picture.

Tires are only one part of the pre-drive routine on a car of this age, but they are one of the easiest parts to inspect thoroughly. It is wise to pair the tire check with a quick look at wheel fasteners, brake feel, steering response, and fluid levels before committing to a longer outing. If the car has been sitting, a short local shakedown drive can reveal vibration or pull before you get far from home. Preparation makes a vintage Sunbeam far more enjoyable on the road.