The 2020 Bentley Mulsanne represents one of the last expressions of Bentley’s traditional flagship formula: hand-finished luxury, imposing presence, and effortless high-speed touring. Tire choice on a car like this is not just about size on paper, because wheel diameter and exact configuration matter to both appearance and road manners. The 2020 Bentley Mulsanne uses radial tires in either 265/40R21 or 265/45R20, depending on the specific setup. That makes the key decision less about vintage-style construction and more about confirming which wheel package is on the car. For a Mulsanne owner, proper fitment starts with identifying the exact sub-model and rim diameter before comparing tire options.
Which Tire Size Is Right for The 2020 Bentley Mulsanne
Two primary tire sizes apply to the 2020 Bentley Mulsanne, and both are radial fitments. The first step is confirming the exact wheel diameter on the car, since one size fits a 21-inch rim and the other fits a 20-inch rim. Sub-model also matters, because the Mulsanne Speed uses only the 21-inch size while the Base model may use either setup.
265/40R21 is a metric radial size in which 265 identifies the nominal section width in millimeters, 40 is the aspect ratio, R denotes radial construction, and 21 is the rim diameter in inches. On the 2020 Bentley Mulsanne, this size belongs to the larger 21-inch wheel setup and is also the tire size used on the Mulsanne Speed. Its lower-profile format reflects a modern luxury-performance presentation, so wheel confirmation is essential before selection. This is the right size to evaluate when the car is already equipped with 21-inch rims and the goal is to maintain the intended fitment profile.
265/45R20 is a metric radial size with a 265-millimeter nominal section width, a 45-series aspect ratio, radial construction, and a 20-inch rim diameter. For the 2020 Bentley Mulsanne, this size applies to the 20-inch wheel configuration rather than the 21-inch setup. Its overall dimensions remain close to the 21-inch fitment, but the wheel diameter is different, so the two sizes should not be treated as interchangeable without checking the actual wheels on the car. This is the size to consider when a Base model is fitted with 20-inch rims.
Sub-model fitment is not completely uniform across the 2020 Bentley Mulsanne range. Checking whether the car is a Base model or a Mulsanne Speed helps narrow the correct tire size quickly, especially because wheel diameter changes with the fitment.
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2020 Bentley Mulsanne Base
The 2020 Bentley Mulsanne Base can use either of the two radial tire sizes associated with this model line, depending on the wheel setup on the car. That makes wheel confirmation especially important before replacement, since the decision is tied to 20-inch versus 21-inch rims rather than a simple one-size-only fitment.
The 2020 Bentley Mulsanne Speed uses the 265/40R21 radial tire size. Tire selection for the Speed is more straightforward than the Base model, but it still pays to verify that the car remains on its correct 21-inch wheels before comparing replacement tires.
The tire sizes listed on this page assume factory-standard vehicle configuration. The following modifications may affect tire fitment and are not reflected in this guide:
Suspension changes (lowering, lift kits, spring replacements)
Body alterations (fender modifications, custom bodywork)
If your vehicle has been modified from factory specifications, verify tire clearance before purchase.
Frequently Asked Questions
Tire questions for the 2020 Bentley Mulsanne usually come down to identifying the correct size, confirming 20-inch versus 21-inch wheels, and understanding how sub-model fitment affects replacement choices. These FAQs focus on fitment, tire selection, and the checks worth making before road use.
Tire Size & Fitment
What tire size fits a 2020 Bentley Mulsanne?
The 2020 Bentley Mulsanne uses two primary radial tire sizes: 265/40R21 and 265/45R20. The Mulsanne Speed uses 265/40R21, while the Base model may use either size depending on the wheel package installed on the car.
That means the correct replacement starts with confirming the exact setup on the vehicle rather than choosing by model name alone. Check the tire sidewall currently on the car and verify the wheel diameter, because a 20-inch and 21-inch fitment may have similar overall proportions but require different rims.
What size rim does a 2020 Bentley Mulsanne use?
A 2020 Bentley Mulsanne uses either a 21-inch rim or a 20-inch rim, depending on which tire size is on the car. The 265/40R21 tire fits a 21-inch wheel, and the 265/45R20 tire fits a 20-inch wheel.
Rim diameter is the first thing to verify before buying replacement tires, because the two Mulsanne fitments are tied directly to different wheel sizes. Looking only at section width is not enough here, since both sizes share the same nominal width but are built for different rim diameters.
Do all 2020 Bentley Mulsanne sub-models use the same tire size?
No. The 2020 Bentley Mulsanne Speed uses 265/40R21, while the 2020 Bentley Mulsanne Base may use either 265/40R21 or 265/45R20. Sub-model and wheel configuration both affect the correct tire choice.
That makes the Mulsanne Speed relatively simple to identify, but the Base model still needs a quick wheel check before replacement. Matching the car’s actual rim diameter is the practical next step, especially on luxury cars that may have had wheel changes during ownership.
Choosing the Right Tire
What should I consider when choosing a tire for a 2020 Bentley Mulsanne?
Start with the exact tire size already fitted to the car: 265/40R21 or 265/45R20. On a 2020 Bentley Mulsanne, choosing the right tire begins with matching the proper rim diameter and confirming whether the car is a Base model or a Mulsanne Speed.
After that, compare the replacement tire’s dimensions and fitment against the vehicle’s actual wheel setup and available clearance. On a large luxury sedan, it is also wise to inspect whether the car remains on its original wheel package or has been altered with aftermarket wheels or suspension changes.
How do I choose between the available 2020 Bentley Mulsanne tire sizes?
The two tire sizes are not alternative styles for casual selection; they correspond to different wheel diameters. A 2020 Bentley Mulsanne on 21-inch wheels uses 265/40R21, while one on 20-inch wheels uses 265/45R20.
The practical decision is therefore not which profile looks better in the abstract, but which size matches the wheels actually on the car. Reading the sidewall on the existing tires and measuring or confirming wheel diameter will prevent ordering a tire that cannot mount to the rim.
What rim-fitment details should I compare when choosing 2020 Bentley Mulsanne tires?
For a 2020 Bentley Mulsanne, compare tire size to actual wheel diameter first, because the car uses both 20-inch and 21-inch fitments. The tire’s sidewall code must match the rim diameter exactly for proper mounting.
It also helps to confirm that the wheels on the car are the ones intended for that size, especially if the vehicle was purchased pre-owned. Checking wheel width, overall tire dimensions, and clearance at the fender and suspension adds another layer of protection before installation.
Restoration & Appearance
Does correct tire fitment matter for a 2020 Bentley Mulsanne restoration or preservation project?
Yes. Even on a modern flagship like the 2020 Bentley Mulsanne, correct tire fitment plays an important role in preserving the car’s stance, wheel presentation, and intended proportions. Using the proper 20-inch or 21-inch size helps maintain the look associated with the vehicle’s actual configuration.
Preservation-minded owners should verify what wheel package belongs on their specific car before replacing tires. If originality matters beyond basic fitment, supporting records, marque references, and prior ownership history can help confirm whether the current wheels and tire size match the car’s established configuration.
How does tire sizing affect the appearance of a 2020 Bentley Mulsanne?
Tire sizing has a visible effect on a 2020 Bentley Mulsanne because the car uses two different wheel-diameter packages. A 265/40R21 presents a lower-profile look on a larger wheel, while a 265/45R20 pairs with a 20-inch rim and changes the visual balance of wheel and sidewall.
That does not make one size universally right for every car, because appearance should follow the configuration the vehicle actually uses. On a Mulsanne, keeping the tire size matched to the correct wheel diameter is the best way to preserve a cohesive, properly proportioned presentation.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2020 Bentley Mulsanne?
Yes. Wheel changes, suspension alterations, and other modifications can affect tire fitment on a 2020 Bentley Mulsanne even when the size code appears close to stock. This matters especially on a car that already uses both 20-inch and 21-inch wheel packages depending on configuration.
A Mulsanne with aftermarket wheels should have its actual rim diameter and overall fit checked before replacement tires are selected. Clearance at the fenders and suspension should also be reviewed, since luxury cars with large wheels can be sensitive to changes in profile and wheel setup.
What should I inspect before driving a 2020 Bentley Mulsanne on new tires?
Before driving a 2020 Bentley Mulsanne on new tires, inspect that the tire size matches the wheel diameter and that each tire is properly mounted and inflated. It is also worth checking for adequate clearance at full steering lock and confirming that all four tires are the intended fitment.
A short initial road check can help reveal vibration, rubbing, or any sign that the wheel-and-tire setup is not quite right. On a low-use luxury car, it also makes sense to inspect the condition of the wheels, valve stems, and suspension components before putting the car back into regular road use.
How often should tires on a 2020 Bentley Mulsanne be inspected?
Tires on a 2020 Bentley Mulsanne should be inspected regularly, especially if the car is driven infrequently or spends long periods in storage. Check tread condition, air pressure, sidewall cracking, bulges, cuts, and any signs of uneven wear that could point to a fitment or alignment issue.
A pre-drive inspection is especially worthwhile on collector-owned luxury cars because low mileage does not prevent tire aging. Consistent checks help catch problems early, and they also confirm that the car’s current 20-inch or 21-inch setup remains properly matched and roadworthy.
