Bentley Mulsanne Tires

Bentley Mulsanne uses three tire sizes across the full model name. The 1981-1992 Bentley Mulsanne uses 235/70R15 on a 15-inch rim. The 2011-2020 Bentley Mulsanne uses either 265/45R20 on a 20-inch rim or 265/40R21 on a 21-inch rim. All listed sizes are radial constructions, but they belong to different generations and should not be treated as interchangeable simply because they share the Mulsanne name.

The practical step is to identify the year group first, then verify the wheel diameter on the car itself. Early cars stay within the 15-inch fitment, while later cars require either the 20-inch or 21-inch size depending on the wheels installed. If a Bentley Mulsanne has had wheels changed during its life, use the actual rim diameter rather than assuming the original year-based fitment.

Bentley Mulsanne uses more than one rim diameter across its production history. The 1981-1992 Bentley Mulsanne uses a 15-inch rim with size 235/70R15. The 2011-2020 Bentley Mulsanne uses either a 20-inch rim with size 265/45R20 or a 21-inch rim with size 265/40R21. The major wheel diameter change arrives with the 2011 return of the Mulsanne name.

That change is the most important fitment checkpoint on this page. If you are working on an early Bentley Mulsanne, you are in the traditional 15-inch fitment range; if you are working on a later car, the wheel must be confirmed as either 20 or 21 inches before selecting a tire. Reading the size molded on the existing tire and measuring the wheel if needed is a sensible safeguard.

A 2011 Bentley Mulsanne has two tire sizes listed because that model year appears with two different rim diameters. One fitment is 265/45R20 for 20-inch wheels, and the other is 265/40R21 for 21-inch wheels. This is a wheel-diameter split rather than a crossply-versus-radial issue or an antique-size interpretation problem, since both listed sizes are modern radial metric sizes.

The right approach is to identify which wheels are actually on the car instead of choosing by year alone. The sidewall on the existing tire will usually tell you immediately whether the car is on 20s or 21s, and the wheel itself can be checked if the tires are absent. Once the rim diameter is confirmed, the correct Bentley Mulsanne size becomes straightforward.

A 1988 Bentley Mulsanne falls within the 1981-1992 production group, so its listed tire size is 235/70R15 on a 15-inch rim. That places it firmly in the earlier Mulsanne generation and separates it from the 2011-2020 cars, which use either 265/45R20 or 265/40R21. The fitment question for a 1988 car is usually not wheel diameter variation within the year, but rather choosing the right tire style and sidewall treatment within the correct 15-inch size.

Check the sidewall of the current tires and the wheel diameter before replacing anything, especially if the car has had cosmetic changes over time. Once 235/70R15 is confirmed, you can choose among available blackwall, whitewall, redline, or raised-white-letter presentations depending on how original or personalized you want the Bentley Mulsanne to appear. That keeps the purchase aligned with the car you actually own, not just the model name.

Bentley Mulsanne tires in the listed 235/70R15 fitment are available with several sidewall styles, including blackwall, redline, narrow whitewall, wide whitewall, and RWL. Those options appear within the earlier 1981-1992 size range and give owners room to stay formal, period-flavored, or more personalized in appearance. The listed products span multiple radial series, so sidewall style is one of the main visual differences within that size.

For a more factory-respectful look on a Bentley Mulsanne, blackwall or a restrained whitewall treatment generally suits the car’s luxury character better than overtly sporting sidewall graphics. Redlines and raised white letters create a distinctly different visual impression and are more of a custom choice. Decide on appearance only after confirming the correct 15-inch size, since sidewall style does not override fitment requirements.

The listed Bentley Mulsanne tire offerings are produced by Cooper, Avon, BFGoodrich, and Michelin. Within the available 235/70R15 fitment, those brands cover several different radial series, including Cobra Radial G/T, Turbosteel, Silvertown Radial, Michelin XVS, and Radial T/A. That gives Bentley Mulsanne owners a mix of touring-oriented and period-style radial options rather than a single-brand solution.

Brand choice matters most after the correct size and wheel diameter are settled. A buyer restoring an early Bentley Mulsanne may focus on sidewall appearance and period presentation, while someone driving the car regularly may prioritize the overall character of the radial series offered in that size. Compare the sidewall styling, load information, and intended visual effect instead of choosing by brand name alone.

A Bentley Mulsanne should be stored on clean, properly inflated tires in a cool, dry, and dark environment away from direct sunlight, ozone sources, and prolonged heat. Collector cars that sit for long periods benefit from regular movement to avoid flat-spotting, especially heavier luxury sedans like Bentley Mulsanne. Clean floors, tire cradles, and avoiding contact with petroleum-based contaminants all help preserve the rubber.

If the Bentley Mulsanne will sit for an extended period, check inflation periodically and roll the car enough to change the tire contact patch. Owners who maintain multiple seasonal or event cars often build a simple inspection routine around monthly pressure checks and visual examination. Good storage habits protect both the tire casing and the driving feel when the car returns to service.

Tires on a Bentley Mulsanne should be inspected before any meaningful road use and at regular intervals even when the car is driven sparingly. Inspection should cover inflation, tread wear, cracking, sidewall damage, age-related hardening, and any signs of uneven wear that might point to alignment or suspension issues. On a heavy luxury car, small tire issues can become noticeable in ride quality and steering behavior sooner than many owners expect.

A practical routine is to inspect the Bentley Mulsanne at least monthly during active use and again after long storage periods. Cars used only for occasional drives or events should still have their tires checked every time they come out, because low annual mileage does not stop rubber from aging. Catching aging or damage early is usually more valuable than monitoring tread depth alone on collector-oriented vehicles.

Tires on a Bentley Mulsanne should be replaced when age, cracking, hardening, internal damage, or persistent vibration indicate deterioration, even if the tread still looks usable. Collector and luxury cars often accumulate age long before they wear out the tread, so appearance alone is not a reliable measure of serviceability. Any tire showing structural concerns, repeated air loss, or obvious age-related degradation belongs under professional evaluation.

The key point for a Bentley Mulsanne owner is that low mileage does not equal fresh rubber. An older tire may still look presentable on a car that is carefully stored, yet no longer deliver the ride quality or reliability expected from a heavy grand touring sedan. Replacing on condition and age, rather than waiting for bald tread, is the safer collector-car practice.

The listed Bentley Mulsanne tires are modern radial designs in the sizes specified for the applicable year groups, which makes them suitable choices for roadgoing use when the tire size matches the car’s wheel diameter and the tire itself is in sound condition. Safety depends on more than size alone, however, because the Bentley Mulsanne spans very different generations with different wheel packages. A correct 15-inch tire for an early car is not a safe substitute for a later 20-inch or 21-inch application.

Before driving, make sure the Bentley Mulsanne has the correct size for its wheels, appropriate inflation, and no visible age or impact damage. It is also wise to evaluate suspension, steering, and brakes on any collector or intermittently used luxury car before regular road use. Tire safety starts with fitment accuracy, then depends on the overall mechanical condition of the car carrying them.

Before driving a Bentley Mulsanne, check the tire size against the wheel diameter, confirm inflation pressures are appropriate for the installed tires, and inspect for cracks, bulges, punctures, or uneven wear. Also examine the valve stems and look for any evidence of long-term flat spotting if the car has been stored. On a luxury car of this weight, tire condition has a direct effect on steering precision, ride quality, and braking stability.

The year split matters here because an early Bentley Mulsanne should be on 235/70R15, while later cars require either 265/45R20 or 265/40R21. A quick glance at the sidewall usually confirms whether the installed tire matches the intended wheel package. If anything feels off in the first few miles, stop and inspect rather than assuming the issue will settle out.

A Bentley Mulsanne should always be driven within the capability of the specific tires fitted to the car, not according to the model’s prestige or performance reputation alone. The listed 235/70R15 products include speed-rated radial offerings, but the exact operating margin depends on the individual tire chosen and its overall condition. Tire age, storage history, inflation, and load all matter as much as the nominal size when a heavy Bentley Mulsanne is used at modern road speeds.

The sensible practice is to treat an older Bentley Mulsanne conservatively until you know exactly what tires are on it and how fresh they are. For the later 2011-2020 cars, matching the correct 20-inch or 21-inch fitment is equally important before any sustained-speed use. Smooth, measured driving is always kinder to collector-oriented luxury cars than exploiting maximum speed potential.