1946 Bentley Tire Fitment Guide

1946 Bentley vehicles in this fitment group use two sizes: 185R16 and 650-16, and both apply to the 1946 Bentley Mark. Each size mounts on a 16-inch rim. Rim-width guidance appears on several products, with 185R16 examples covering 4.50 to 6.00 inches and 5.0 to 6.5 inches, while 650-16 examples list 4.50 to 5.00 inches.

That means the first fitment question is not model splitment, since the Mark can use either size, but which construction belongs on your car. Owners pursuing a more traditional postwar presentation usually start with 650-16 bias-ply, while owners who prioritize a more modern radial driving character often look at 185R16. Before making a final choice, compare the tire’s approved rim-width range to the wheel actually on the car.

185R16 is a metric radial size used on the 1946 Bentley Mark. The 185 identifies the nominal section width in millimeters, the R indicates radial construction, and the 16 is the wheel diameter in inches. Because no aspect ratio is printed in that size format, it conventionally falls into the Euro-metric style where an 80-series profile is implied rather than spelled out.

For a 1946 Bentley owner, that code tells you you are looking at a radial option rather than a period-style bias-ply. It also signals that the tire belongs on a 16-inch wheel, so the next checks are wheel width, tube marking on the specific tire, and the intended use of the car. If your Bentley is driven regularly on modern roads, many owners begin their comparison with this radial size.

650-16 is a traditional numeric bias-ply size used on the 1946 Bentley Mark. In that older sizing system, 6.50 represents the nominal section width and 16 is the rim diameter in inches. The dash-style numeric format is associated with bias-ply construction rather than a modern radial designation.

That makes 650-16 the size most buyers look at when they want a distinctly period-correct visual and driving character for a 1946 Bentley. It also keeps you in the correct 16-inch wheel family shared with the radial alternative. Once you know you want this format, the more detailed decision becomes sidewall appearance, including blackwall or wide whitewall, plus confirming that your wheel width falls within the approved range for the specific tire.

Within this year-and-make grouping, the 1946 Bentley Mark is the only model core covered, and it uses both available sizes: 185R16 and 650-16. There is no model-to-model split to sort through here. The key difference is construction type, since both sizes mount on 16-inch rims.

That simplifies the search for many owners because identifying the model gets you to the full tire menu right away. The remaining decision is whether your Bentley is being restored around original-style appearance or set up for more frequent road use with radial construction. Wheel width still needs to be checked against the tire you choose, since rim compatibility is narrower than rim diameter alone.

The 650-16 is the traditional bias-ply choice for a 1946 Bentley Mark, while the 185R16 is the radial alternative. Both fit the same 16-inch wheel diameter family, so the decision is mainly about construction and the character you want from the car. Bias-ply tires preserve the period look and period-style road feel, whereas radial tires are generally chosen by owners who want a more modern response in regular driving.

A Bentley being restored for authenticity, show presentation, or a distinctly postwar driving experience often points buyers toward 650-16. A Bentley expected to cover more road miles on contemporary pavement often leads buyers to compare the 185R16 options instead. Neither choice should be made by size code alone, though, because the final match still depends on wheel width and the exact tire specification you intend to run.

1946 Bentley tires are available in more than one sidewall presentation, depending on size. The 185R16 radial options are blackwall tires, while the 650-16 bias-ply range includes both blackwall and wide whitewall versions. That gives Bentley owners a clear appearance choice within the period-style size, while the radial side remains visually more restrained.

For most postwar British luxury cars, blackwall is the safer authenticity-minded starting point unless you are matching a known regional or coachbuilder-specific presentation. Wide whitewalls can create a more stylized custom or show-oriented look, but they change the visual character of the car more than the construction change alone. If appearance matters as much as handling, sidewall style should be part of the decision from the very beginning.

Several brands cover 1946 Bentley fitments. In 185R16 radial, the available brands are Michelin, Avon, and Vredestein. In 650-16 bias-ply, the available brands are BFGoodrich, Coker Classic, Firestone, and Garfield, giving buyers a mix of period-style American bias-ply offerings and European-flavored radial choices for the same Bentley fitment family.

Brand choice matters because it often goes hand in hand with construction type, sidewall appearance, and product details such as tube marking or speed rating. A buyer narrowing the field should first decide whether the car needs a radial or a bias-ply tire, then compare brands within that size rather than cross-shopping every product at once. That keeps the selection process focused and more historically coherent.

Approved rim width depends on the tire size and, in some cases, the individual product. For 185R16, listed examples cover 4.50 to 6.00 inches and 5.0 to 6.5 inches. For 650-16, listed examples call for 4.50 to 5.00 inches. All of these tires share a 16-inch rim diameter, but rim width remains a separate and important fitment check.

That matters because a wheel can be the correct diameter yet still be outside the tire’s intended width range. A narrow postwar wheel may suit a 650-16 bias-ply very well but may not be ideal for every 185R16 radial on the market. Before fitting a 1946 Bentley, measure the wheel you actually have or confirm it with a specialist, then compare it to the approved range for the exact tire selected.

Inner-tube use depends on the specific 1946 Bentley tire you choose rather than on wheel diameter alone. In 185R16, the Michelin option is marked TT, indicating tube type, while the other radial products are not marked the same way. The 650-16 bias-ply listings here do not all carry explicit tube markings, so tube requirements should be confirmed on the specific tire and against the wheel construction on the car.

That variation is especially important on an older Bentley, because original wheel design, restoration work, and tire construction all influence whether a tube is appropriate. If you are fitting original-type wheels, treat tube fitment as a product-by-product and wheel-by-wheel decision rather than assuming every radial or every bias-ply is handled the same way. Matching the tire’s marking to the wheel’s condition is the safest approach.

Both 185R16 and 650-16 are 16-inch sizes, so they belong to the same basic rim-diameter family used on the 1946 Bentley Mark. That means the original wheels can often be considered for either size in diameter terms. The remaining question is whether the wheel width is appropriate for the exact tire chosen.

A 650-16 bias-ply commonly works within a narrower listed rim-width range than the radial options shown here. Some 185R16 tires accept wider rims than a traditional 650-16. Before fitting either construction to original Bentley wheels, confirm the measured rim width and inspect the wheel itself for condition, trueness, and suitability for the tire style you plan to run.

A 1946 Bentley should be stored in a cool, dry, dark environment away from direct sunlight, electric motors, battery chargers, welders, and other ozone-producing equipment. Tires should be kept clean and at proper inflation during storage. When a collector Bentley sits for long periods, bias-ply tires like 650-16 are more prone to temporary flat-spotting than radial tires, so occasional rolling or weight relief can help.

If the car will rest for months at a time, move it periodically or support it in a way that avoids one constant contact patch taking all the load. Pay attention to moisture on garage floors and avoid storing the car with the sidewalls pressed against oil, solvents, or sharp edges. Good storage habits preserve appearance as well as structure, which matters on a Bentley where tire presentation is part of the overall car.

Tire life on a 1946 Bentley should be judged more by age, storage history, and condition than by mileage alone. Collector-car tires often age out before they wear out. A practical rule is to begin close inspection and evaluation around five to seven years and to treat roughly ten years as a serious replacement consideration, regardless of how much tread remains.

Check the tire’s date coding and look honestly at sidewall condition, tread integrity, and how the car has been stored. A lightly driven Bentley that spends most of its life indoors can still have tires that are too old for confident road use. If the car is used for touring rather than static display, age should weigh just as heavily in the decision as originality or brand preference.

Tires on a 1946 Bentley should be inspected before every drive and again before any longer outing. Look for sidewall cracking, cuts, bulges, irregular wear, embedded objects, and pressure loss. If your chosen tire setup uses tubes, valve stems and tube-related air retention deserve special attention, since a slow loss may not always show up as obvious tread wear.

A pre-drive inspection matters more on a low-use Bentley than many owners realize, because age-related deterioration can develop even when tread still looks deep. Also check the spare, especially if the car is being prepared for touring. Catching a weak valve stem, an emerging sidewall split, or a pressure issue in the garage is far easier than sorting it out on the side of the road.

A 1946 Bentley Mark would have been delivered in the bias-ply era, so a bias-ply fitment is the historically appropriate starting point when discussing original-style tires. Among the sizes available here, 650-16 is the period-type bias-ply offering that aligns with that postwar construction practice. Original-equipment branding could vary by market, coachbuilder, or supply conditions, so construction, size, and sidewall presentation are the more reliable authenticity markers.

For restoration work, that means 650-16 should usually be your first comparison point if the goal is visual and historical fidelity. A radial 185R16 may still be an intentional choice for a driven car, but it represents a later construction approach rather than a strict period-spec presentation. If the car is being judged or researched in detail, Bentley marque specialists and period factory literature are the right places to confirm market-specific nuances.

Correct tire fitment absolutely matters when showing a 1946 Bentley, especially at events that value authenticity and period presentation. Judges and knowledgeable enthusiasts often notice tire size, construction type, and sidewall style immediately because those details affect the stance and visual character of the whole car. On a postwar Bentley, a bias-ply 650-16 presents much closer to period expectations than a modern radial profile.

A radial tire may be entirely reasonable for road use, but it can look and feel different enough to stand out on a car restored for originality. Sidewall choice matters too, since an unusually bold whitewall treatment can change the car’s appearance quickly. If your Bentley is being prepared for concours or club judging, check the event’s standards and compare your tire choice against the restoration goal before mounting a full set.

Both the Michelin X Radial and the Vredestein Sprint Classic cover the 185R16 radial fitment for a 1946 Bentley, but their markings differ in useful ways. The Michelin is listed as 185R16 92S TT, making it a tube-type radial with an S speed rating, which corresponds to 112 mph. The Vredestein is listed as 185VR16 93V with a maximum load capacity of 1,433 pounds at 51 psi and a 5.0 to 6.5 inch approved rim-width range.

For the Bentley owner, that means these two radial options are not interchangeable in every setup just because the basic size looks similar. Tube fitment, speed symbol, and approved wheel width all affect which one belongs on a particular car. If your goal is a careful radial conversion on original or restored wheels, compare those details first and make sure the wheel itself supports the tire you prefer.

1946 Bentley tires can be suitable for highway use when they are the correct size, in good condition, properly inflated, and matched to the car’s wheels. The 185R16 radial offerings shown here include S-rated and V-rated examples, with S carrying a 112 mph ceiling and V carrying a 149 mph ceiling. The 650-16 bias-ply options are a more traditional construction and should be driven with the expectations appropriate to a postwar luxury car.

In real-world use, the mechanical condition of a 1946 Bentley often matters as much as the tire itself. Brakes, steering, suspension, wheel condition, and alignment all shape highway confidence on a car of this age. If the Bentley is driven regularly on faster roads, many owners favor the radial route, but any highway plan should begin with a complete vehicle inspection rather than relying on tire speed symbols alone.

Inflation pressure on a 1946 Bentley should be matched to the exact tire size and the tire maker’s published load relationship, not transferred loosely from one style to another. Within the available fitments here, several 650-16 bias-ply products list a maximum load of 1,580 pounds at 32 psi, while one 185R16 Vredestein radial lists 1,433 pounds at 51 psi. Those figures are tire ratings, not a universal Bentley operating recommendation.

The right approach is to start with the Bentley factory recommendation when available for the original-style setup, then compare that with the reproduction tire maker’s guidance for the exact product mounted on the car. A radial conversion should never automatically inherit a bias-ply pressure, and one radial should not borrow another radial’s pressure just because the section width looks similar. Pressure tuning has to stay size- and product-specific.

Before a longer drive in a 1946 Bentley, inspect each tire for cracking, cuts, bulges, exposed cords, unusual wear, and proper cold inflation. Check valve stems closely and pay extra attention if the setup uses tube-type tires. The spare should be aired up and inspected as carefully as the four road tires, since a decades-old spare can look fine yet be unfit for real use.

A longer outing also calls for checking the Bentley as a whole, because tire condition is only one part of roadworthiness on a postwar car. Verify wheel fasteners, steering feel, brake function, and the car’s general readiness before departure. When the tire side of the checklist is handled carefully, you reduce the odds that a small issue like a weak valve stem or hidden sidewall age crack turns into the trip’s biggest problem.