The 2012 Bentley Mulsanne arrived as Bentley’s flagship sedan, combining formal luxury, substantial road presence, and modern grand-touring character in a hand-built package. Buyers looking at one today are usually balancing originality, ride quality, and the visual stance that suits such a large, elegant car. Tire fitment on the 2012 Bentley Mulsanne centers on two radial sizes, 265/40R21 and 265/45R20, which makes wheel diameter the first detail to confirm before choosing tires. Because both sizes are modern metric radials with very similar overall dimensions, the real decision is matching the tire to the car’s actual wheel setup, intended road use, and appearance preferences.
Which Tire Size Is Right for The 2012 Bentley Mulsanne
The 2012 Bentley Mulsanne uses two primary tire sizes, and the difference comes down first to wheel diameter: either a 21-inch rim with 265/40R21 tires or a 20-inch rim with 265/45R20 tires. Both are radial fitments for the Mulsanne Base, so the first step is confirming which wheels are actually on the car before comparing tire options.
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 wheel diameter in inches. On a 2012 Bentley Mulsanne, this size suits a 21-inch wheel setup and preserves the modern low-profile look associated with large-diameter luxury-performance fitments. Its shorter sidewall relative to the 20-inch alternative makes wheel confirmation especially important before purchase. Choose this size when the car is already fitted with 21-inch rims and you want to stay with the proper modern metric format for that setup.
265/45R20 is also 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 2012 Bentley Mulsanne, this size belongs to the 20-inch wheel configuration and offers a slightly taller sidewall than the 21-inch fitment while remaining very close in overall diameter. That keeps the selection focused on wheel choice rather than a dramatic change in tire height. This is the size to evaluate when the car wears 20-inch wheels and you want to maintain the intended fitment format for that rim diameter.
Sub-model fitment is straightforward here because the 2012 Bentley Mulsanne Base is the covered configuration, but it can use either of the two primary radial tire sizes. Checking the car’s actual wheel diameter still matters, since the choice is between 20-inch and 21-inch fitment rather than between different trim levels.
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2012 Bentley Mulsanne Base
The 2012 Bentley Mulsanne Base uses radial tires and may be fitted with either the 265/40R21 or 265/45R20 size depending on its wheel setup. Tire selection starts with confirming whether the car has 20-inch or 21-inch rims, then choosing a tire that suits how the sedan will be driven and presented.
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
Owners of a 2012 Bentley Mulsanne usually need clarity on the two tire sizes, the difference between the 20-inch and 21-inch wheel setups, and what to inspect before putting a large luxury sedan back on the road.
Tire Size & Fitment
What tire size fits a 2012 Bentley Mulsanne?
A 2012 Bentley Mulsanne uses one of two radial tire sizes: 265/40R21 or 265/45R20. Both sizes apply to the Mulsanne Base, so the correct choice depends on whether the car is equipped with 21-inch wheels or 20-inch wheels.
Because both fitments are legitimate for this model, the most important step is checking the wheel diameter on the actual car rather than guessing from appearance alone. A Mulsanne with aftermarket wheels, replacement wheels, or a changed tire package should be measured and verified before selecting a tire.
What size rim does a 2012 Bentley Mulsanne use?
The 2012 Bentley Mulsanne uses either a 21-inch rim with 265/40R21 tires or a 20-inch rim with 265/45R20 tires. Both wheel diameters are part of the model’s primary fitment range, and both use radial construction.
Rim diameter is the first fitment point to confirm because a 20-inch tire cannot be mounted on a 21-inch wheel, and the reverse is equally true. It is also worth checking the full wheel setup on the car if anything has been changed, including replacement wheels or custom finishes.
Why does the 2012 Bentley Mulsanne have more than one tire size?
The 2012 Bentley Mulsanne has more than one tire size because it was fitted with two different wheel diameters: 265/45R20 for 20-inch rims and 265/40R21 for 21-inch rims. Both are modern radial fitments for the Mulsanne Base rather than different constructions for different trims.
In practical terms, that means tire selection begins with the wheel, not with a preference between the two sizes. The sidewall profile changes with the rim diameter, so confirming the actual wheel package on the car helps avoid ordering a tire that matches the width but not the rim.
Choosing the Right Tire
What should I consider when choosing a 265/40R21 tire for a 2012 Bentley Mulsanne?
Start with the basics: the tire must be 265/40R21 radial and intended for a 21-inch wheel on the 2012 Bentley Mulsanne. After size confirmation, focus on how the car is used, whether it is maintained as a formal luxury cruiser, driven regularly, or kept for occasional collector use.
The right choice usually comes down to preserving the proper fitment format while matching the tire to the car’s actual wheel setup and driving expectations. A Mulsanne that has been modified or fitted with non-original wheels should also have wheel width, clearance, and overall tire condition reviewed before replacement.
What should I consider when choosing a 265/45R20 tire for a 2012 Bentley Mulsanne?
A 265/45R20 tire for a 2012 Bentley Mulsanne should first be matched to a true 20-inch wheel setup, since this is one of the model’s two primary radial fitments. Once the size is confirmed, the main considerations are intended road use, ride expectations, and maintaining the proper overall fitment for the sedan.
This size stays very close in overall diameter to the 21-inch alternative, but that does not make the two automatically interchangeable. Tire selection should still account for the wheel actually on the car, along with any suspension changes, wheel replacements, or clearance concerns that may have developed over time.
How do I choose between the available tire sizes for a 2012 Bentley Mulsanne?
The choice between 265/40R21 and 265/45R20 is determined by the wheel diameter on the car. The 21-inch setup uses 265/40R21, while the 20-inch setup uses 265/45R20, and both are proper radial sizes for the 2012 Bentley Mulsanne Base.
Once the wheel diameter is confirmed, the selection process becomes much simpler because you are no longer comparing two possible fitments. Attention can then shift to the condition of the wheels, the intended driving use, and whether the car still has its original-style setup or has been changed since new.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2012 Bentley Mulsanne?
Yes. Modifications can affect tire fitment on a 2012 Bentley Mulsanne even when the tire size appears correct on paper. Aftermarket wheels, suspension changes, lowering, alignment changes, or body alterations can all influence how a 265/40R21 or 265/45R20 tire sits and clears the car.
A modified Mulsanne should be checked for wheel diameter, wheel width, steering clearance, and fender clearance before replacement tires are chosen. Even on an unmodified car, it is smart to confirm the existing setup directly, since large luxury sedans are sometimes updated with custom wheels that change fitment requirements.
What should I inspect before driving a 2012 Bentley Mulsanne on new tires?
Before driving a 2012 Bentley Mulsanne on new tires, inspect the wheels for damage, confirm the correct tire size for the wheel diameter, and check inflation pressure carefully. It is also wise to look over the suspension, alignment condition, and brake components on a heavy luxury sedan that may have spent time parked.
Road use is best approached methodically, especially if the car has been stored or driven infrequently. A short initial drive can help reveal vibration, pulling, unusual clearance issues, or air-loss concerns early, giving you a chance to correct them before putting serious miles on the new tire set.
How often should tires on a 2012 Bentley Mulsanne be inspected?
Tires on a 2012 Bentley Mulsanne should be inspected regularly, with extra attention if the car is a low-mileage collector vehicle or spends long periods parked. Pressure, tread wear, sidewall condition, and any signs of cracking, bulges, cuts, or repeated air loss deserve routine checks.
Collector luxury cars can age their tires long before the tread is fully used, so visual condition matters as much as mileage. Inspection is especially important before a long drive, after seasonal storage, or anytime the car has been sitting on one set of tires long enough for flat spotting or pressure loss to develop.
