The 1998 Bentley Continental sits in the era of the modern grand touring Bentley, combining hand-built luxury with the substantial road presence that defined the marque in the late 1990s. For many owners, tire choice is as much about preserving that composed, purposeful character as it is about basic replacement. Tire fitment on the 1998 Bentley Continental is radial, but it is not one-size-fits-all: the Continental R uses either 255/50R18 or 255/55R17, while the Continental T uses 285/45R18. That makes wheel diameter and exact sub-model identification the first steps before comparing replacement options. Once those are confirmed, the focus shifts to proper proportions, wheel compatibility, and maintaining the car's intended stance.
Which Tire Size Is Right for The 1998 Bentley Continental
Three tire sizes apply to the 1998 Bentley Continental, and the correct choice depends on the exact sub-model and wheel diameter. The Continental R uses either 255/50R18 or 255/55R17, while the Continental T uses 285/45R18, so confirming both the sub-model and whether the car wears 17-inch or 18-inch wheels is the first step before selecting a replacement tire.
255/50R18 is a metric radial size in which 255 refers to nominal section width in millimeters, 50 is the aspect ratio, R indicates radial construction, and 18 is the wheel diameter in inches. On the 1998 Bentley Continental, this size is used on certain Continental R applications and keeps the fitment in a modern radial format suited to the car's late-1990s grand touring character. Its dimensions place it very close in overall diameter to 255/55R17, but it requires an 18-inch wheel. This is the size to evaluate when the car already carries the proper 18-inch setup and you want to preserve the intended wheel-and-tire relationship.
255/55R17 is a metric radial size with a 255-millimeter nominal section width, a 55-series profile, radial construction, and a 17-inch rim requirement. For the 1998 Bentley Continental, this size also belongs to the Continental R, making it an alternative fitment tied to wheel diameter rather than a universal size for every version of the car. Its overall diameter closely matches 255/50R18, but the wheel itself is different, so the tire choice starts with confirming the existing 17-inch rims. Owners keeping an original-style wheel package or replacing worn tires on that setup should begin here.
285/45R18 is a wider metric radial size where 285 denotes nominal section width in millimeters, 45 is the aspect ratio, R marks radial construction, and 18 identifies the wheel diameter in inches. This size belongs to the 1998 Bentley Continental T and stands apart from the Continental R fitments because it uses a broader footprint on an 18-inch wheel. Its dimensions and profile make sub-model confirmation especially important before replacement. This is the fitment to focus on when matching the Continental T's specific wheel setup and maintaining the proportions intended for that model.
Sub-model fitment matters on the 1998 Bentley Continental because the Continental R and Continental T do not share the same tire setup. Identifying the exact model and confirming wheel diameter will narrow the search quickly and help avoid choosing a tire built for a different configuration.
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1998 Bentley Continental R
The 1998 Bentley Continental R uses radial tire fitments in either 255/50R18 or 255/55R17, depending on the wheel package on the car. That means tire selection starts with confirming whether the car is on 17-inch or 18-inch rims, then choosing a replacement that matches the existing setup.
The 1998 Bentley Continental T uses a 285/45R18 radial tire, giving it a distinct fitment from the Continental R. Tire selection is more straightforward once the sub-model is confirmed, but wheel size and overall tire proportions should still be checked carefully before replacement.
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
Common questions for the 1998 Bentley Continental usually center on identifying the correct tire size by sub-model, confirming 17-inch versus 18-inch wheels, and understanding how the Continental R and Continental T fitments differ before replacement.
Tire Size & Fitment
What tire size fits a 1998 Bentley Continental?
The 1998 Bentley Continental uses three radial tire sizes, depending on the sub-model and wheel setup. The Continental R uses either 255/50R18 or 255/55R17, while the Continental T uses 285/45R18. Those are distinct fitments, so the correct size is tied to the exact version of the car rather than the model name alone.
The practical first step is to confirm whether the car is a Continental R or Continental T, then verify the wheel diameter actually on the vehicle. A Continental R may be on either 17-inch or 18-inch wheels, and choosing the wrong rim diameter will stop the tire from fitting even if the overall proportions look similar on paper.
What size rim does a 1998 Bentley Continental use?
A 1998 Bentley Continental uses either a 17-inch or 18-inch rim, depending on the sub-model and tire size. The 255/55R17 fitment uses a 17-inch rim, while both 255/50R18 and 285/45R18 use 18-inch rims. Rim diameter is one of the key fitment differences across this model range.
That distinction matters because tire sizes with similar overall diameter still are not interchangeable across different wheel diameters. Checking the wheel itself before ordering is especially important on collector and luxury cars that may have had wheel changes over time, since an 18-inch tire cannot be mounted on a 17-inch rim and vice versa.
Why does the 1998 Bentley Continental have more than one tire size?
More than one tire size appears on the 1998 Bentley Continental because fitment varies by sub-model and wheel package. The Continental R can use either 255/50R18 or 255/55R17, while the Continental T uses 285/45R18. The differences are not random; they reflect separate wheel-and-tire combinations used across the Continental lineup.
That means replacement should start with the exact car in front of you, not a general search for Bentley Continental tires. Verifying the sub-model badge, measuring wheel diameter, and comparing the current tire size on the sidewall will usually settle the question quickly and help avoid selecting a tire intended for another Continental configuration.
Choosing the Right Tire
What should I consider when choosing a tire for a 1998 Bentley Continental?
Start with the correct size for the exact car: 255/50R18 or 255/55R17 for a Continental R, and 285/45R18 for a Continental T. Since all of these are radial fitments, the main selection issue is not bias-ply versus radial, but matching the proper size and wheel diameter before comparing replacement tire options.
After that, look at how the car is used and how closely you want to preserve its intended proportions and road manners. A grand touring Bentley places a premium on proper fit, so wheel width, load capability, sidewall profile, and clearance should all be reviewed carefully, especially if the car has aftermarket wheels or a changed suspension setup.
How do I choose between the available 255/50R18 and 255/55R17 tires for a 1998 Bentley Continental R?
You do not choose freely between those two sizes unless the car also has the matching wheels. A 1998 Bentley Continental R may use either 255/50R18 or 255/55R17, but each size belongs to a different rim diameter, so the wheel on the car determines which tire can be used.
Once the wheel diameter is confirmed, the decision becomes one of staying with the established setup and selecting a tire that suits the car's touring character. It also helps to inspect all four wheels for matching size, since some older specialty cars may have had replacements over time that changed the original wheel-and-tire combination.
How do I choose the right 285/45R18 tire for a 1998 Bentley Continental T?
For a 1998 Bentley Continental T, the key is staying with the 285/45R18 size and confirming that the tire matches the vehicle's 18-inch wheel setup. This fitment is distinct to the Continental T within this model group, so the right choice begins with preserving the correct dimensions rather than treating it as interchangeable with Continental R sizes.
Beyond size, look at overall suitability for a heavy, high-speed grand touring car and confirm the tire works with the actual wheel width on the vehicle. Clearance at the suspension and fender openings also deserves attention, particularly on cars that may have seen wheel, alignment, or ride-height changes during their lives.
Restoration & Appearance
Which tire should I choose for a period-style 1998 Bentley Continental?
A period-style 1998 Bentley Continental starts with the correct original-format radial size for the exact sub-model and wheel package. That means 255/50R18 or 255/55R17 for a Continental R, and 285/45R18 for a Continental T. Keeping the proper size is what preserves the car's late-1990s luxury grand touring proportions most effectively.
Appearance still depends on the actual tire design, sidewall profile, and how closely the replacement complements the car's substantial body and wheel presentation. Owners pursuing a highly exact restoration should compare the replacement against marque references, period photos, and vehicle-specific documentation so the final look suits both the car and the restoration goal.
Does correct tire fitment matter for a 1998 Bentley Continental restoration?
Correct tire fitment matters on a 1998 Bentley Continental restoration because the wheel-and-tire package has a major effect on stance, visual balance, and how authentic the finished car feels. Using 255/50R18, 255/55R17, or 285/45R18 in the right application keeps the proportions aligned with the Continental R or Continental T being restored.
Even when the car is not headed for show judging, an incorrect size can look out of place and may introduce clearance or mounting issues. Matching the tire to the actual wheel diameter on the vehicle is just as important as matching the sub-model, especially on cars that may have seen wheel changes during prior ownership.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 1998 Bentley Continental?
Yes, modifications can affect tire fitment on a 1998 Bentley Continental, even when the car still uses one of the correct sizes. Changes such as aftermarket wheels, altered wheel width, different offset, suspension lowering, or body work can change how a 255/50R18, 255/55R17, or 285/45R18 tire sits in the wheel opening.
That is why the actual wheel-and-suspension setup should be checked before replacement rather than assuming every Continental remains stock. Turning clearance, inner-side suspension clearance, and fender room all deserve a close look, especially on the wider Continental T fitment or on any Continental R that no longer carries its original wheel package.
What should I inspect before driving a 1998 Bentley Continental on new tires?
Before driving a 1998 Bentley Continental on new tires, inspect the wheels for damage, confirm the correct tire size and rim diameter, and make sure each tire is mounted in the intended position. It also helps to check valve stems, air pressure, and visible clearance around suspension components and fender edges before the first road test.
A careful short drive is the next step, listening for rubbing, vibration, or pull that could point to a fitment or chassis issue. On a collector-era Bentley, it is also wise to review alignment condition and brake or suspension wear, since new tires can reveal existing problems that were less noticeable on old, hardened rubber.
What should I check before a longer drive in a 1998 Bentley Continental?
Before a longer drive, make sure the 1998 Bentley Continental's tires are the correct size for the car, properly inflated, and free from cuts, bulges, irregular wear, or signs of air loss. Tread condition matters, but so does the general age and health of the tire, especially on low-mile collector cars that may sit for extended periods.
A longer trip also calls for a quick check of wheel hardware, spare-tire readiness if equipped, and overall chassis condition. Luxury grand tourers can cover distance quickly, so small issues become more important at sustained road speeds. Looking over the tires after the first few miles can also help catch pressure loss or clearance concerns early.
