The 2018 Land Rover Trucks Discovery blends modern luxury-SUV comfort with the brand’s long-standing reputation for all-terrain capability and long-distance touring. In this generation, the Discovery moved firmly into the premium family-hauler space while still carrying the upright stance and versatile mission that define the name. Tire selection centers on four radial fitments: 255/60R19, 255/55R20, 275/45R21, and 285/40R22, with size choice tied to the vehicle’s exact wheel package and sub-model setup. That makes this page less about vintage-style construction choices and more about confirming the correct rim diameter first, then selecting the right overall tire profile for appearance, ride, and road use.
Which Tire Size Is Right for The 2018 Land Rover Trucks Discovery
The 2018 Land Rover Trucks Discovery uses four primary tire sizes, and the correct one depends on the exact sub-model and wheel package. All of them are radial metric sizes, but they do not share the same rim diameter, so the first step is confirming whether the vehicle is on 19-, 20-, 21-, or 22-inch wheels before comparing tire choices.
The size 255/55R20 identifies a metric radial tire with a 255 millimeter section width, a 55-series aspect ratio, and fitment for a 20-inch rim. On the 2018 Land Rover Trucks Discovery, this size sits in the middle of the available range and reflects a modern SUV fitment rather than an older bias-ply sizing system. Its dimensions support the Discovery’s premium-road and utility character while keeping a substantial sidewall compared with the 21- and 22-inch alternatives. This is a strong size to evaluate when the vehicle already has 20-inch wheels and the goal is to stay with the intended wheel-and-tire balance.
The 275/45R21 code denotes a metric radial tire that is 275 millimeters wide, uses a 45-series profile, and mounts on a 21-inch rim. That wider tread and shorter sidewall move the Discovery toward a larger-wheel presentation than the 19- and 20-inch options. For this vehicle, the size is part of a wheel-specific fitment path, so it should be matched to an actual 21-inch wheel rather than treated as a universal substitute. It is the right size to consider when preserving the existing wheel package and maintaining the stance and proportions associated with this particular Discovery setup.
A 285/40R22 tire is a metric radial with a 285 millimeter section width, a 40-series aspect ratio, and a 22-inch rim requirement. Among the Discovery’s primary sizes, this one carries the widest section width and the lowest profile, giving it the most large-diameter wheel emphasis in the group. On a 2018 Land Rover Trucks Discovery, that makes wheel confirmation especially important, since the tire is tied to a specific 22-inch configuration rather than a general replacement across the range. It is the appropriate fitment to review when the vehicle is equipped with 22-inch wheels and the goal is to keep that larger-wheel look and setup.
The 255/60R19 size uses a 255 millimeter section width, a 60-series aspect ratio, and fits a 19-inch rim. It is a metric radial format and, in this Discovery application, represents the smallest rim diameter among the primary tire choices while keeping an overall tire diameter very close to the other sizes. That makes it distinct mainly by wheel package rather than by a dramatic overall-size change. Buyers should focus on confirming that the vehicle is actually running 19-inch wheels, especially if it has changed hands or been modified, before selecting this fitment for replacement.
Sub-model fitment on the 2018 Land Rover Trucks Discovery is straightforward in one sense and important in another: all covered versions use radial tires, but not every sub-model shares the same full range of wheel sizes. Checking the exact trim helps narrow the correct tire size before comparing replacement options.
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2018 Land Rover Trucks Discovery HSE
The 2018 Land Rover Trucks Discovery HSE uses the 255/55R20, 275/45R21, and 285/40R22 tire sizes in radial construction. That means tire selection starts with confirming which wheel diameter is on the vehicle now, then choosing a replacement that matches the intended wheel-specific setup.
The 2018 Land Rover Trucks Discovery HSE Luxury also uses 255/55R20, 275/45R21, and 285/40R22 radial tires. The practical decision is less about trim badging and more about verifying the actual wheel package, especially on vehicles that may have had wheel changes after delivery.
The 2018 Land Rover Trucks Discovery SE has the broadest fitment spread, using 255/60R19, 255/55R20, 275/45R21, and 285/40R22 radial sizes. For an SE model, wheel diameter confirmation matters most, since the correct replacement depends on the specific 19-, 20-, 21-, or 22-inch setup on the vehicle.
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
These FAQs focus on the wheel-specific tire sizes used on the 2018 Land Rover Trucks Discovery, along with trim-level fitment, construction, selection factors, and the checks that matter before regular road use.
Tire Size & Fitment
What tire size fits a 2018 Land Rover Trucks Discovery?
The 2018 Land Rover Trucks Discovery uses four primary tire sizes: 255/60R19, 255/55R20, 275/45R21, and 285/40R22. All are radial metric sizes, and the correct fitment depends on the Discovery’s exact sub-model and wheel package rather than one universal size across the entire range.
The most important step is confirming the wheel diameter currently on the vehicle. A Discovery that has 19-inch wheels needs a different tire than one fitted with 20-, 21-, or 22-inch wheels, even though the overall tire diameters stay fairly close. If the SUV has had aftermarket wheels or previous owner changes, inspect the actual wheel and current tire markings before ordering replacements.
What size rim does a 2018 Land Rover Trucks Discovery use?
A 2018 Land Rover Trucks Discovery can use 19-inch, 20-inch, 21-inch, or 22-inch rims, depending on the exact tire size and trim configuration. The corresponding tire sizes are 255/60R19, 255/55R20, 275/45R21, and 285/40R22, so the final number in each size identifies the required rim diameter.
That rim diameter is not interchangeable from one size to another without changing the wheel itself. Measuring the wheel, checking the stamp on the rim, and reading the existing tire sidewall are the simplest ways to verify what is installed. This matters especially on used Discoverys, where wheel upgrades or trim-based package changes can make the current setup different from what a buyer expects.
Do all 2018 Land Rover Trucks Discovery sub-models use the same tire size?
No. The HSE and HSE Luxury use 255/55R20, 275/45R21, and 285/40R22, while the SE uses those three sizes plus 255/60R19. That means sub-model fitment overlaps significantly, but it is not completely identical across every 2018 Land Rover Trucks Discovery version.
Trim alone still should not replace a physical wheel check. An SE may be on 19-inch wheels, but it may also be equipped with 20-, 21-, or 22-inch fitments, and HSE models can span multiple wheel diameters as well. Matching the replacement tire to the actual wheel package on the vehicle is the safest way to avoid choosing the right trim with the wrong rim size.
Choosing the Right Tire
What should I consider when choosing a 2018 Land Rover Trucks Discovery tire?
Start with the correct size for the wheel already on the vehicle: 255/60R19, 255/55R20, 275/45R21, or 285/40R22. Since all primary fitments are radial metric sizes, the main selection issue is not construction type but matching the tire to the Discovery’s exact rim diameter and overall setup.
After size confirmation, look at how the tire’s profile relates to your priorities. A 19-inch fitment carries more sidewall than a 22-inch fitment, while the larger-wheel sizes emphasize a lower-profile appearance. Also review the current wheel condition, any suspension changes, and how the vehicle is used, because a family road-trip Discovery and a style-focused street setup may call for different replacement priorities.
How do I choose between the available 2018 Land Rover Trucks Discovery tire sizes?
The available sizes are not alternatives to mix freely across the model range; they correspond to different wheel diameters and trim-level configurations. Choosing between them really means identifying which wheel package your 2018 Land Rover Trucks Discovery is using now, then replacing the tire with the matching size.
The final choice usually comes down to whether the vehicle remains on its existing factory-type wheel diameter or has been changed since new. A Discovery on 19-inch wheels should stay with 255/60R19 unless the wheels are being replaced, while a 22-inch setup requires 285/40R22. Keeping the tire matched to the actual wheel helps preserve proper proportions, clearance, and intended fitment.
What tire series are available for the 2018 Land Rover Trucks Discovery?
The primary fitment information for the 2018 Land Rover Trucks Discovery centers on size, radial construction, and rim diameter rather than a named tire series assortment. The key takeaway is that tire choice starts with the vehicle’s wheel-specific size, not with assuming one series applies across every Discovery trim and wheel package.
When comparing actual replacement options, use the size first and the tire series second. A series comparison only becomes useful after the Discovery’s 19-, 20-, 21-, or 22-inch setup has been confirmed, because a tire line in one diameter may not exist in another. That approach keeps styling, road-use, and brand preferences from leading you into the wrong physical fitment.
Restoration & Appearance
Does correct tire fitment matter for a 2018 Land Rover Trucks Discovery restoration or collector presentation?
Yes. Even though a 2018 Land Rover Trucks Discovery is a modern vehicle rather than a vintage restoration candidate, correct tire fitment still matters for appearance, stance, and how authentic the vehicle looks within its original wheel-package range. The right 19-, 20-, 21-, or 22-inch size keeps the Discovery’s proportions closer to its intended presentation.
That is especially important on a premium SUV where wheel-and-tire balance strongly affects visual character. A mismatched sidewall profile can make the vehicle look under-tired or over-wheeled even when the tire physically mounts to the rim. For owners preserving a clean, original-style presentation, the best starting point is matching the replacement tire to the exact wheel diameter already fitted to the vehicle.
How does tire profile affect the appearance of a 2018 Land Rover Trucks Discovery?
Tire profile changes the visual balance of the 2018 Land Rover Trucks Discovery more than construction choice does, since all primary fitments are radial. The 255/60R19 and 255/55R20 sizes carry more visible sidewall, while 275/45R21 and 285/40R22 shift the look toward a larger-wheel, lower-profile presentation.
That difference can influence whether the Discovery reads as more utility-oriented or more street-luxury in appearance. Owners trying to maintain the character of an existing wheel package should avoid choosing solely by width or style and instead keep the tire matched to the wheel diameter and profile the vehicle was set up to use. It is a simple way to preserve proper visual proportion.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Land Rover Trucks Discovery?
Yes. Wheel changes, suspension alterations, lowering, lift adjustments, and body modifications can all affect tire fitment on a 2018 Land Rover Trucks Discovery, even when the vehicle is using one of its recognized tire sizes. A modified Discovery may need closer attention to wheel width, clearance, and how the tire sits through steering and suspension travel.
That matters most when the SUV has moved away from its original wheel package. A 22-inch setup, for example, should not be assumed to behave the same as a 19-inch setup if offset or suspension height has changed. Checking full-lock clearance, fender room, and any signs of rubbing before regular road use is a smart step after any tire or wheel replacement.
What should I inspect before driving a 2018 Land Rover Trucks Discovery on new tires?
Before putting a 2018 Land Rover Trucks Discovery into regular service on new tires, inspect the wheel diameter match, confirm that each tire size matches the rim, and verify that inflation is set correctly for the application. It also helps to look over the wheels themselves for damage, bead-seat issues, or signs of previous impact.
A short follow-up check after the first drive is worthwhile. Watch for vibration, steering pull, rubbing at full lock, and any contact with liners or suspension parts. Since this Discovery can use several different wheel diameters, mistakes often come from selecting a tire for the trim name rather than for the wheel actually installed, so a final visual and physical check is time well spent.
How often should tires on a 2018 Land Rover Trucks Discovery be inspected?
Tires on a 2018 Land Rover Trucks Discovery should be inspected regularly, not just when replacement time arrives. Check tread wear, air pressure, cuts, bulges, and sidewall condition as part of routine ownership, especially if the vehicle sees a mix of highway travel, family hauling, or rougher road use that can stress a modern SUV tire package.
A monthly visual inspection is a sensible habit, with a closer look before longer trips. Uneven wear can also signal alignment, suspension, or wheel issues that are easy to miss when changing between the Discovery’s different wheel packages. Staying ahead of those signs helps protect ride quality and fitment integrity, particularly on larger-diameter 21- and 22-inch combinations with shorter sidewalls.
