1966 Sunbeam Alpine Tires

The 1966 Sunbeam Alpine uses two primary tire sizes: 165R13 in radial construction and 600-13 in bias-ply construction. Both sizes fit a 13-inch rim, so the main fitment question is not wheel diameter but which construction and size format best match the car and the owner's goals.

That distinction matters because a 600-13 bias-ply tire and a 165R13 radial do not present the same look or follow the same sizing convention. Checking the wheel width, the current wheel setup, and the intended use of the Alpine helps narrow the choice between a traditional bias-ply presentation and a radial alternative.

The 1966 Sunbeam Alpine uses a 13-inch rim with both of its primary tire sizes. The 165R13 radial and the 600-13 bias-ply tire each share that same rim diameter, which simplifies the first stage of tire selection compared with vehicles that changed wheel diameter across trim levels.

Rim diameter is only part of the fitment picture, though, because tire choice should also account for wheel width. The radial and bias-ply options do not share the same width range, so it is worth confirming the actual wheel dimensions on the car before choosing a tire, especially if the Alpine has replacement wheels.

600-13 is a numeric bias-ply tire size. The 600 refers to a nominal section width of about 6.00 inches, and the 13 refers to the rim diameter in inches. On a 1966 Sunbeam Alpine, it represents the traditional bias-ply fitment rather than a modern metric radial format.

That matters because buyers often compare 600-13 against radial alternatives such as 165R13, even though the two sizes are written in completely different systems. Reading the size correctly helps avoid confusion when choosing between restoration-oriented bias-ply tires and radial options that keep the same 13-inch wheel diameter.

600-13 is a bias-ply tire size for the 1966 Sunbeam Alpine. It uses the older numeric sizing system and is available here in BFGoodrich Silvertown Classic Bias Ply form, making it the traditional construction choice for owners who want the car to retain a distinctly vintage tire presentation.

Choosing 600-13 keeps the Alpine in its bias-ply fitment path, which can matter for appearance, stance, and overall restoration direction. Before selecting one, it is smart to confirm the wheel width and decide whether the goal is period-style character or a move toward radial construction using one of the available equivalent size formats.

Radial equivalents for 600-13 include 165R13, P165/75R13, and P175/70R13. Those correspond to an 80-series metric radial, a P-metric 75-series radial, and a P-metric 70-series radial. Each one offers a radial-format alternative to the original 600-13 bias-ply size on the 1966 Sunbeam Alpine.

The recommended rim-width range for these equivalents is 4 to 5 inches, so wheel width should be confirmed before making the change. It is also wise to compare the tire's overall fit on the car, including steering and body clearance, rather than assuming that every radial equivalent will suit every Alpine wheel and suspension setup.

That depends on what matters most for the car. A 600-13 bias-ply tire keeps the traditional sizing format and a more vintage presentation, while 165R13 gives the 1966 Sunbeam Alpine a radial fitment in a classic Euro-metric size. Both are valid fitment directions within this model's 13-inch wheel setup.

The practical decision usually comes down to appearance goals, wheel compatibility, and how the car will be driven. A restoration-oriented Alpine may lean toward bias-ply style, while a road-driven car may be considered for radial construction. Confirming wheel width and checking clearance should come before committing to either path.

Start with the two primary fitment directions: 600-13 bias-ply or 165R13 radial. Both use a 13-inch rim, but they differ in sizing system, construction, and visual character. That means the right choice for a 1966 Sunbeam Alpine depends on whether the priority is a traditional period-style look or a radial-format alternative.

After size and construction, compare details that affect how the tire suits the car, such as wheel-width compatibility, sidewall treatment, and available tire series. It also helps to think about how the Alpine will be used, since a show-focused car and a regularly driven sports car may call for different tire priorities.

The available sidewall styles for the 1966 Sunbeam Alpine include blackwall in 165R13 radial form, plus narrow whitewall and wide whitewall in 600-13 bias-ply form. Those choices create a meaningful appearance difference even before construction, brand, or tire series are considered.

Blackwall radials suit a sporty, understated look, while whitewall bias-ply tires give the car a more traditional presentation. Sidewall choice should be matched to the Alpine's overall restoration style and wheel setup rather than chosen in isolation, since the sidewall treatment is tied to the available tire size and construction.

Michelin, Dunlop, and BFGoodrich all offer tires for the 1966 Sunbeam Alpine within the applicable sizes. Michelin and Dunlop appear in the 165R13 radial fitment, while BFGoodrich covers the 600-13 bias-ply fitment with Silvertown Classic Bias Ply whitewall options.

Brand choice should be considered alongside the bigger fitment question, because the brand lineup changes with construction and size. A buyer deciding between Michelin or Dunlop is already in the radial path, while a buyer choosing BFGoodrich whitewalls is selecting the traditional 600-13 bias-ply direction for the Alpine.

For a period-style 1966 Sunbeam Alpine, the 600-13 bias-ply size is the most traditional starting point. It keeps the older numeric sizing format and is offered in BFGoodrich Silvertown Classic Bias Ply form, which aligns naturally with a more vintage visual presentation than a modernized radial conversion path.

The final choice still depends on how closely the car is being restored and what look the owner wants to achieve. When exact historical presentation matters, it is worth comparing the tire choice against marque-specific references, photos, or restoration records rather than assuming any one sidewall treatment is universally correct.

A period-style 1966 Sunbeam Alpine can take very different visual directions depending on sidewall choice. The available options include blackwall in the 165R13 radial size and narrow whitewall or wide whitewall in the 600-13 bias-ply size, so the sidewall treatment changes the car's character in a visible way.

Choosing the right look depends on the restoration theme rather than on sidewall style alone. A whitewall presentation creates a more traditional vintage effect, while blackwall keeps the car cleaner and more understated. The key is to make sure the appearance choice also aligns with the intended construction and wheel setup.

Yes, modifications can affect tire fitment on a 1966 Sunbeam Alpine even when the tire size itself is correct. Aftermarket wheels, different wheel widths, suspension changes, ride-height changes, or bodywork alterations can all influence how a 165R13 radial or 600-13 bias-ply tire sits within the car's available space.

A car that no longer has its original-style wheel and suspension setup should be checked carefully before a tire is chosen. Wheel width, steering clearance, and fender clearance deserve particular attention, especially when moving between bias-ply and radial construction or when the Alpine has been altered for style or performance.

Before driving a 1966 Sunbeam Alpine on new tires, inspect the wheels for correct diameter and width, make sure the tires are properly seated, and confirm that there is no interference at the fenders or steering components. It is also smart to verify tire pressure and check that the suspension and steering parts are in sound condition.

Collector cars often spend long periods parked, so the first road test should be approached with the rest of the chassis in mind. A careful look at alignment behavior, air retention, and any sign of rubbing after the first miles can help catch issues early before the Alpine is taken on a longer drive.

Tires on a collector 1966 Sunbeam Alpine should be inspected regularly for cracking, flat spotting, cuts, bulges, uneven wear, and air loss, even if the car is driven only occasionally. Low annual mileage does not stop tires from aging, and older sports cars can spend enough time parked for condition changes to go unnoticed.

Good storage habits help preserve both bias-ply and radial tires. Keeping the car away from prolonged sunlight, excess heat, moisture, and ozone-producing equipment can reduce premature aging, and maintaining proper inflation helps protect the casing while the Alpine is parked between drives.