The 2018 Bentley Continental sits in the modern grand touring tradition, blending substantial power, long-distance comfort, and unmistakably upscale presence. Buyers drawn to this generation often want a tire setup that preserves that balance rather than treating the car like a generic luxury coupe or convertible. Tire fitment on the 2018 Bentley Continental centers on two radial sizes, 275/40R20 and 275/35R21, with fitment varying by sub-model and wheel package. That makes the real decision less about broad tire categories and more about confirming wheel diameter, then choosing the right series, sidewall treatment, and intended use. For road manners, appearance, and proper clearance, the exact configuration matters before anything else.
Which Tire Size Is Right for The 2018 Bentley Continental
The 2018 Bentley Continental uses two primary tire sizes, and the right one depends first on the exact sub-model and wheel diameter. Both are radial metric sizes, but one fits a 20-inch wheel and the other a 21-inch wheel, so confirming the car's actual wheel setup is the first step before comparing brands, sidewall styles, or performance-oriented tire series.
Fit(s): GT Convertible, GT Speed Convertible, and GT Supersports Convertible
Construction: Radial|Rim: 21 in
A 275/35R21 tire uses a 275-millimeter section width, a 35-series aspect ratio, radial construction, and a 21-inch rim diameter. On the 2018 Bentley Continental, this size is part of the larger-wheel fitment and is especially important to verify on GT Speed Convertible and GT Supersports Convertible applications. Its low-profile metric radial format suits the sharper visual stance expected from a 21-inch wheel package. Choosing this size starts with confirming that the car is actually on 21-inch wheels, then checking that the intended tire's dimensions and specifications match the vehicle's clearance and use.
A 275/40R20 tire keeps the same 275-millimeter nominal width but uses a 40-series profile on a 20-inch rim. For the 2018 Bentley Continental, this size applies to certain GT Convertible configurations and opens up the broadest product variety, including blackwall, redline, and raised white letter sidewall treatments. Available choices also span several radial performance series and a drag-focused application, so the size itself is only the starting point. This fitment is best evaluated by matching the vehicle's 20-inch wheel setup with the tire's intended appearance, construction details, and driving purpose.
Sub-model fitment is not the same across the 2018 Bentley Continental range. Checking the exact sub-model matters because some versions are tied to the 21-inch fitment, while the GT Convertible can appear with either the 20-inch or 21-inch radial size.
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2018 Bentley Continental GT Convertible
The 2018 Bentley Continental GT Convertible can use either of the two primary radial sizes, which makes wheel confirmation especially important before choosing tires. Once the 20-inch or 21-inch setup is verified, selection becomes a matter of matching the tire's style, series, and intended road use to the car.
The 2018 Bentley Continental GT Speed Convertible uses the 275/35R21 radial fitment. Tire selection for this sub-model starts with preserving the 21-inch wheel setup and then comparing the intended handling character, overall dimensions, and clearance before moving to any substitute tire choice.
The 2018 Bentley Continental GT Supersports Convertible uses the 275/35R21 radial size. That keeps the fitment decision fairly focused, with the main job being to confirm the 21-inch wheel package and choose a tire that suits the car's stance, road use, and overall fitment requirements.
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.
Best 2018 Bentley Continental Tires for Sale
Available 275/40R20 choices include BFGoodrich, Nitto, Pro-Trac, and M&H Racemaster products across blackwall, redline, and raised white letter sidewall styles. The product grid is most useful for comparing tire series, intended use, and rim-width specifications within the 20-inch radial fitment.
For a 2018 Bentley Continental, the biggest questions usually center on which of the two radial sizes applies, how wheel diameter affects selection, and what to compare when choosing among available 20-inch tire options.
Tire Size & Fitment
What tire size fits a 2018 Bentley Continental?
The 2018 Bentley Continental uses two primary radial tire sizes: 275/35R21 and 275/40R20. The correct size depends on the exact sub-model and wheel setup, with the GT Convertible appearing with either size and the GT Speed Convertible and GT Supersports Convertible using 275/35R21.
The most important first check is the actual wheel diameter on the car. A Continental fitted with 20-inch wheels needs a different tire than one on 21-inch wheels, even though both sizes share the same nominal width. If the car has been modified or wheels have been changed, confirm the wheel size on the vehicle itself before choosing a tire.
What size rim does a 2018 Bentley Continental use?
A 2018 Bentley Continental uses either a 20-inch or 21-inch rim, depending on the tire size and sub-model. The 275/40R20 fitment uses a 20-inch rim, while the 275/35R21 fitment uses a 21-inch rim.
That difference matters because tire diameter, sidewall height, and wheel compatibility all start with the rim size. A buyer looking at replacement tires should verify the actual wheel diameter before comparing tire series or sidewall styles. On cars that have seen aftermarket wheel changes, the installed wheel may not match the original configuration for that sub-model.
Do all 2018 Bentley Continental sub-models use the same tire size?
No, the covered 2018 Bentley Continental sub-models do not all use the same tire size. The GT Convertible can use either 275/40R20 or 275/35R21, while the GT Speed Convertible and GT Supersports Convertible use 275/35R21.
That means the model name alone is not always enough to select tires with confidence. The sub-model narrows the fitment, but the installed wheel package still needs to be confirmed before purchase. This is especially important on luxury and performance cars where optional wheel packages, replacements, or aftermarket changes can alter what tire size belongs on the vehicle today.
Choosing the Right Tire
What should I consider when choosing a 275/40R20 tire for a 2018 Bentley Continental?
Start with correct size, radial construction, and the actual use of the car. In 275/40R20, available choices range from road-focused performance series to a drag-oriented tire, so the right selection depends on whether the Continental is used for regular street driving, appearance goals, or more specialized performance use.
Rim-width specifications, load figures where stated, and sidewall style are also worth comparing. Some 275/40R20 options are built around blackwall presentation, while others add redline or raised white letter styling. Choosing carefully helps keep the tire aligned with the car's road manners, visual character, and wheel setup instead of selecting purely by size alone.
What sidewall styles are available for 2018 Bentley Continental tires?
Within the available 275/40R20 fitment, sidewall choices include blackwall, redline, and RWL, which is raised white letter. Those styles give the same basic size very different visual personalities, from a restrained modern look to a more assertive or custom presentation.
Sidewall treatment should be chosen with the car's intended appearance in mind, but only after confirming the correct size and wheel diameter. A redline or raised white letter tire changes the look of the Continental more than many buyers expect, so it helps to consider whether the goal is understated grand touring style or a more individualized presentation.
What brands offer tires for the 2018 Bentley Continental?
In the available 275/40R20 size, tire choices include BFGoodrich, Nitto, Pro-Trac, and M&H Racemaster. Those brands cover several radial tire series and more than one type of intended use, rather than offering one single style of replacement tire.
Brand choice should be considered alongside series, sidewall style, and fitment details instead of treated as the only decision. A buyer comparing these options should look at whether the tire is meant for street use, performance driving, or drag-focused use, then confirm the wheel specifications and overall setup before narrowing the selection further.
Restoration & Appearance
Which tire should I choose for a period-style 2018 Bentley Continental?
A period-style approach on a 2018 Bentley Continental usually means staying with the correct wheel diameter and choosing a tire that preserves the car's clean, high-end grand touring appearance. In the available 275/40R20 fitment, that often points buyers toward a road-focused radial rather than a specialty drag application.
Appearance still comes down to the look you want the car to project. Blackwall usually keeps the presentation closest to a restrained modern luxury style, while redline or raised white letter creates a more customized impression. Since this is a recent collector-era vehicle, originality-minded buyers should compare any appearance choice against the car's existing wheel and visual theme.
How does tire construction affect the appearance of a restored 2018 Bentley Continental?
For the 2018 Bentley Continental, primary fitment stays within radial construction, so the visual differences come more from profile, wheel diameter, and sidewall treatment than from a bias-ply-versus-radial decision. A 20-inch tire with a taller sidewall presents differently than a 21-inch tire with a shorter profile.
That means appearance planning should start with the actual wheel package on the car. Once rim diameter is confirmed, sidewall style becomes the clearest visual choice in the available 20-inch products, especially if comparing blackwall, redline, and raised white letter options. Keeping those elements aligned helps the car look intentional rather than mixed between luxury and muscle-inspired cues.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Bentley Continental?
Yes, modifications can affect tire fitment on a 2018 Bentley Continental. Aftermarket wheels, suspension changes, lowering, alignment changes, or body alterations can all influence whether a 275/40R20 or 275/35R21 tire has the right clearance and wheel compatibility for the car as it sits now.
That is why size alone should not be treated as the whole answer on a modified car. The wheel's actual diameter and width need to be checked, along with clearance at full steering lock and through suspension travel. A Continental with non-original wheels may require closer verification before any replacement tire is chosen.
What should I inspect before driving a 2018 Bentley Continental on new tires?
Before driving a 2018 Bentley Continental on new tires, inspect inflation pressure, wheel hardware, valve stems, and visible clearance around the fenders and suspension. It also helps to confirm that all four tires match the intended size and that there is no rubbing when the steering is turned from lock to lock.
A short, careful test drive is the best next step after installation. Pay attention to vibration, pull, unusual noise, or any sign of contact under steering or over bumps. On a heavy, high-performance grand tourer, proper pressure and early reinspection matter because small fitment problems become more noticeable once the car is back on the road.
How often should tires on a 2018 Bentley Continental be inspected?
Tires on a 2018 Bentley Continental should be inspected regularly, especially if the car is driven infrequently or stored for long periods. Look for pressure loss, uneven tread wear, cuts, bulges, and sidewall cracking, and give the tires a closer check before any longer drive or seasonal return to service.
Collector-use patterns can age tires differently than daily driving. A Continental that spends long stretches parked may look fine at a glance but still develop issues from time, storage conditions, or low pressure. Routine inspection helps catch problems early and also confirms that the tires remain appropriate for the car's wheel setup and current condition.
