1949 Bentley Tire Fitment Guide

1949 Bentley vehicles in this range use two tire sizes: 185R16 and 650-16, and both apply to the Bentley Mark. Each size mounts on a 16-inch rim, but they differ in construction. The 185R16 is a radial size, while the 650-16 is a traditional numeric bias-ply size. Rim width guidance shown in the available products includes 4.50 to 6.00 inches and 5.0 to 6.5 inches for 185R16, and 4.50 to 5.00 inches for several 650-16 offerings.

That means the key decision is usually not year-or-model identification, but whether you want the Bentley to feel and appear more like a late-1940s car on bias-ply tires or a more relaxed touring car on radials. Before choosing, measure the actual wheel width and compare it with the approved range for the specific tire you are considering.

185R16 is a Euro-metric radial tire size used on the 1949 Bentley Mark. The 185 indicates nominal section width in millimeters, the R identifies radial construction, and the 16 is the wheel diameter in inches. When no separate aspect ratio is printed in this style of sizing, it is conventionally treated as an 80-series radial format.

For a Bentley owner, that code signals a later-style radial replacement rather than the original-era numeric bias-ply format. It is the size to compare if your priority is radial construction, and it is worth checking the individual tire's sidewall markings because speed ratings and tube markings are not identical across every 185R16 product.

650-16 is a classic numeric bias-ply tire size used on the 1949 Bentley Mark. In this format, the leading number is the nominal section width designation and the 16 identifies the rim diameter in inches. Unlike a modern metric radial code, it does not use millimeters or an R to identify construction, so the style itself points to a period-correct bias-ply tire.

That makes 650-16 the familiar choice for owners restoring the car to its late-1940s look and driving character. It also opens up more visual variety, including blackwall and wide whitewall options, so if appearance matters as much as fitment, this size gives the most traditional presentation for a 1949 Bentley.

Both sizes fit the 1949 Bentley Mark on 16-inch wheels, but they serve different goals. The 650-16 is a bias-ply size that stays closest to the car's original-era construction and visual character. The 185R16 is a radial size that keeps the same basic rim diameter while moving to a more modern tire design. Both are legitimate paths, but they are aimed at different ownership priorities.

Choose 650-16 if authenticity, period stance, and traditional steering feel matter most to your project. Choose 185R16 if your Bentley is driven regularly and you want a radial option from Michelin, Avon, or Vredestein. Since both sizes fit 16-inch rims, the final check should be wheel width and the exact sidewall markings of the product you intend to use.

1949 Bentley tire options include blackwall and wide whitewall styles, but the choice depends on size. The 185R16 radial offerings are blackwall only. The 650-16 bias-ply range includes both blackwall and wide whitewall versions, giving owners a broader visual choice within the traditional fitment. That split reflects the difference between a more touring-oriented radial selection and a more appearance-driven restoration market in the bias-ply size.

For a restrained British luxury look, many owners lean toward blackwall, especially on cars restored with a formal postwar presentation. Wide whitewalls can create a more customized or show-focused appearance, but they should be chosen with an eye toward the specific restoration style and market presentation of the car. If authenticity matters for judging, confirm the expected sidewall treatment with a Bentley club or marque expert.

Several brands cover 1949 Bentley tire sizes. In 185R16, the available radial choices come from Michelin, Avon, and Vredestein. In 650-16, the available bias-ply choices include BFGoodrich, Coker Classic, Firestone, and Garfield. That gives the Bentley owner a clear split between radial brands in the metric-style size and traditional American-branded bias-ply offerings in the numeric size.

Brand selection should follow your larger goal for the car rather than habit alone. A driver-oriented Bentley owner may start with the radial brands and compare speed ratings and wheel-width suitability, while a restoration-minded owner will usually compare the bias-ply brands by sidewall appearance and overall period presentation. The right brand is the one that supports the construction, look, and fitment standard you are trying to achieve.

Rim width depends on the tire size and, in some cases, the individual product. For 185R16, available products show approved rim-width ranges of 4.50 to 6.00 inches and 5.0 to 6.5 inches. For 650-16, several available tires specify a 4.50 to 5.00 inch rim-width range. All of the listed sizes use a 16-inch rim diameter, but width compatibility still needs to be checked carefully.

That matters because two tires sharing the same wheel diameter are not automatically ideal for the same wheel width. Before fitting a 1949 Bentley, confirm the wheel's actual inside bead width and compare it against the range approved for the exact tire you plan to use. That step helps preserve proper profile, steering response, and sidewall support.

Inner-tube requirements are not uniform across all 1949 Bentley tire options. In the 185R16 radial size, the Michelin X Radial is marked TT, indicating tube type, while other 185R16 products do not all carry the same tube notation. The 650-16 bias-ply listings here do not show mixed tube markings in the same way, but the safest practice is still to confirm the individual tire's sidewall designation before installation.

That makes tube fitment a product-level decision rather than something to assume from size alone, especially in the radial range. If your Bentley still uses original-style wheels, consult the tire manufacturer or a knowledgeable installer about whether the wheel design, valve setup, and tire marking call for a tube. Matching the tube decision to the exact product avoids leaks, heat buildup, and mounting trouble.

Both 185R16 and 650-16 use a 16-inch rim diameter, so the original wheel diameter is compatible with either size in principle. The more important distinction is wheel width. Available 185R16 tires are approved over wider ranges than the 650-16 bias-ply listings, which commonly center on 4.50 to 5.00-inch rims. Diameter match alone is not enough to settle the question.

A 1949 Bentley owner considering a switch between bias-ply and radial should verify the wheel width before treating the two sizes as interchangeable. That check is especially important on unrestored or coachbuilt cars where wheel details may have changed over time. If the wheel width falls within the tire maker's approved range, the original wheels can often remain in service while you change construction type.

A stored 1949 Bentley should be kept in a cool, dry, dark space away from direct sunlight, electric motors, battery chargers, welders, and other ozone-producing equipment. Clean tires last longer when they are not sitting in standing moisture or petroleum residue. Bias-ply tires also tend to flat-spot more readily during long static periods, while any collector tire can suffer from sidewall aging if the car sits for months without movement.

If the car will be parked for an extended season, maintain proper inflation and either move it periodically or support it in a way that reduces constant load on one contact patch. A breathable cover and a stable environment help more than repeated cosmetic dressing. Good storage preserves both the appearance and the service life of 1949 Bentley tires.

Tires on a 1949 Bentley are best judged by age and condition rather than mileage alone, because collector cars often accumulate few miles but spend long periods parked. A sensible rule is to evaluate them closely once they reach roughly five to seven years of age and to treat around ten years as a serious replacement point regardless of tread depth. The DOT date code on the tire helps establish actual age.

That approach matters more on a vintage Bentley than a mileage-based estimate, because low-use cars can still develop internal aging, sidewall cracking, or casing changes that are not obvious at first glance. If the tires are older and the car is expected to tour, replacing them before the driving season is usually wiser than stretching service life simply because tread remains.

Tires on a 1949 Bentley should be inspected before every drive and given a more thorough review before any extended outing. Check for visible sidewall cracking, tread separation, cuts, bulges, uneven wear, and signs that the tire is losing pressure. If the product is tube type, valve stems and any tube-related leakage symptoms deserve extra attention because age-related failures often show up there first.

A quick walkaround catches many issues before they become roadside problems, especially on a heavier postwar touring car. Include the spare in the same routine, since a neglected spare is of little use on a long trip. Frequent inspection is one of the simplest ways to keep a 1949 Bentley reliable without overcomplicating ownership.

A 1949 Bentley Mark would have been fitted in period with bias-ply tires rather than modern radials, and the 650-16 size aligns with that original-era construction style. The 185R16 radial options available today represent a later tire technology that many owners adopt for driving use, not a factory-era construction for a postwar Bentley of this age. Original-equipment branding should be verified separately for the exact car and market.

For a restoration, that means size alone is not the whole story. Judges and knowledgeable enthusiasts will usually look at construction type and sidewall presentation as part of overall authenticity. If your Bentley has unusual coachwork or country-specific history, a Bentley marque club or period sales literature is the right place to confirm the most correct original fitment details.

Correct tire fitment can matter quite a lot when a 1949 Bentley is judged for authenticity. Size, construction type, and sidewall appearance all influence whether the car looks appropriate to its era. A modern radial may be entirely practical for touring, but on a strict originality-focused car it can read differently from a period-style 650-16 bias-ply. Sidewall treatment can also affect the impression the car makes on the show field.

That does not mean every event applies the same standard, but it does mean tires should be chosen as part of the restoration strategy rather than as an afterthought. If the Bentley is headed for concours competition, confirm the event's judging expectations before final selection. Club advisers and marque specialists can usually tell you how much leeway exists for radials, blackwalls, or whitewalls.

Both Michelin X Radial and Avon Turbosteel cover the 185R16 fitment for a 1949 Bentley, and both are blackwall radial options. The Michelin is marked 185R16 92S TT, carries a 4.50 to 6.00-inch rim-width range, and uses an S speed rating capped at 112 mph. The Avon is listed as 185VR16 93V, showing a V rating capped at 149 mph, and it carries a higher listed load figure at 1,433 pounds.

For the Bentley owner, the practical difference is not just brand name but the exact sidewall marking and specification set attached to each tire. One tire is clearly marked tube type and one carries a higher speed category, so they should not be treated as interchangeable on paper even though both fit the same nominal size. Match the tire to your wheel, intended use, and installation requirements.

1949 Bentley tires can be suitable for highway use when they are the correct size, in sound condition, and operated within their ratings. The 185R16 radial options shown here include S-rated products to 112 mph and V-rated products to 149 mph. The 650-16 bias-ply options shown do not list comparable speed-letter markings in the same way, so they should be driven with the expectations appropriate to a traditional bias-ply collector tire and the car's vintage chassis.

On a postwar Bentley, tire capability is only one part of the picture. Braking, steering condition, suspension health, and overall roadworthiness often matter more in real-world touring than the tire's theoretical top-speed ceiling. Highway use is reasonable when the car is mechanically sorted, the tires are age-appropriate and properly inflated, and speeds remain consistent with both the tire design and the character of the vehicle.

Inflation pressure for 1949 Bentley tires should be matched to the exact tire size and product, not borrowed from another fitment. In the 650-16 size, several available bias-ply tires list a maximum load of 1,580 pounds at 32 psi. In 185R16, one listed radial shows 1,433 pounds at 51 psi. Those figures are tire ratings, not a blanket instruction for every Bentley application or every tire in the same diameter.

The right approach is to start with the vehicle's period factory recommendation for the original fitment, then compare it with the tire maker's published guidance for the reproduction or modern tire you are using. Never assume that a radial should be inflated like a bias-ply, or that one 16-inch tire should use another's pressure. Matching pressure to the exact product preserves handling, ride, and casing life.

Before a longer drive in a 1949 Bentley, inspect each tire for cracking, weathering, cuts, bulges, irregular wear, and proper inflation. Check that valve stems are sound, and pay extra attention to tube-type fitments or tube-marked products because leakage can hide there. The spare should be aired, inspected, and usable. Any vibration or pull already present in normal driving deserves attention before a tour.

A Bentley of this era rewards a broader pre-trip routine, so tires should be treated as one part of a complete readiness check. Brakes, wheel bearings, steering joints, cooling, and lighting all matter on a vintage road car. When the tire condition is known, pressures are set correctly, and the rest of the chassis is in order, the car is far better prepared for sustained driving.