The 2004 Land Rover Trucks Discovery sits in the later chapter of the Discovery II era, a period when Land Rover blended traditional SUV character with more modern road manners and trim-level distinctions. It remains a favorite with owners who use these trucks for weekend driving, light trail work, and preservation-minded ownership. Tire fitment on the 2004 Land Rover Trucks Discovery centers on two radial sizes, 255/55R18 and 255/65R16, with the correct choice tied directly to the truck’s sub-model and wheel diameter. That makes this less about vintage-style construction and more about confirming the right wheel setup, profile, and overall stance. Before choosing a tire, verify whether the truck is an HSE, S, or SE and confirm that the wheels are still the correct diameter.
Which Tire Size Is Right for The 2004 Land Rover Trucks Discovery
The 2004 Land Rover Trucks Discovery uses two primary tire sizes, and the right one depends on sub-model and wheel diameter. HSE and SE models use one radial size on an 18-inch rim, while the S uses a different radial size on a 16-inch rim. Before comparing tires, the first step is confirming the exact sub-model and checking which wheels are actually on the truck.
255/55R18 is a modern metric radial size in which 255 represents nominal section width in millimeters, 55 is the aspect ratio, R identifies radial construction, and 18 is the rim diameter in inches. On the 2004 Land Rover Trucks Discovery, this size belongs to 18-inch-wheel applications rather than every version of the model. Its lower-profile format gives the buyer a different fitment path than the 16-inch option, so wheel confirmation matters before purchase. Choose this size when the truck’s sub-model and actual wheel setup call for the 18-inch radial fitment.
255/65R16 is a modern metric radial size with a 255-millimeter nominal section width, a 65-series profile, radial construction, and a 16-inch rim diameter. On the 2004 Land Rover Trucks Discovery, this size is tied to the 16-inch-wheel configuration rather than the 18-inch setup used on other sub-models. The key distinction is not simply width, since both primary sizes share the same nominal section width, but the wheel diameter and sidewall profile. This is the size to evaluate when the truck retains the correct 16-inch wheels for that configuration.
Sub-model fitment matters on the 2004 Land Rover Trucks Discovery because the covered trims do not all use the same tire size. The first step is matching the truck’s HSE, S, or SE designation to the correct wheel diameter before comparing tire choices.
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2004 Land Rover Trucks Discovery HSE
The 2004 Land Rover Trucks Discovery HSE uses the 255/55R18 radial size on an 18-inch wheel setup. Tire selection for this sub-model starts with preserving that wheel diameter and then confirming the truck has not been changed to a different wheel package.
The 2004 Land Rover Trucks Discovery S uses the 255/65R16 radial size on a 16-inch wheel setup. That makes wheel confirmation especially important, since choosing between the two Discovery sizes depends on the actual rim diameter fitted to the truck.
The 2004 Land Rover Trucks Discovery SE uses the 255/55R18 radial size, matching the 18-inch-wheel fitment used on the HSE. Tire selection here is mainly about confirming the truck still carries the proper 18-inch wheels rather than assuming all Discovery trims use the same size.
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 on the 2004 Land Rover Trucks Discovery usually come down to sub-model fitment, 16-inch versus 18-inch wheels, and how to confirm the right radial size before replacement. The answers below focus on size meaning, wheel checks, selection factors, and practical road-use inspection.
Tire Size & Fitment
What tire size fits a 2004 Land Rover Trucks Discovery?
A 2004 Land Rover Trucks Discovery uses one of two radial tire sizes: 255/55R18 or 255/65R16. The correct size depends on the sub-model and wheel package. HSE and SE models use 255/55R18, while the S uses 255/65R16.
The important next step is checking the truck itself before ordering tires, especially on older SUVs that may have had wheel changes over time. Confirm the sub-model, then verify the actual wheel diameter on the vehicle, because the two Discovery sizes use different rims even though their overall dimensions are very close.
What size rim does a 2004 Land Rover Trucks Discovery use?
The 2004 Land Rover Trucks Discovery uses either a 16-inch or 18-inch rim, depending on sub-model. The 255/65R16 tire fits a 16-inch rim, while the 255/55R18 tire fits an 18-inch rim. Those are distinct primary fitments, not alternate ways to describe the same wheel.
Rim diameter should be confirmed before comparing tires, because a 16-inch tire cannot be mounted on an 18-inch wheel and an 18-inch tire cannot be mounted on a 16-inch wheel. If the truck has aftermarket wheels, check the wheel markings directly rather than relying only on trim designation or past paperwork.
Do all 2004 Land Rover Trucks Discovery sub-models use the same tire size?
No. The 2004 Land Rover Trucks Discovery uses different tire sizes across its covered sub-models. HSE and SE models use 255/55R18, while the S uses 255/65R16. All of these are radial tires, but they do not share the same rim diameter.
That difference matters because tire selection starts with identifying the exact sub-model and then confirming the truck still has the correct wheel setup. Since both sizes are 255 millimeters wide but use different profiles and rims, it is easy to assume they are interchangeable when they should instead be matched carefully to the vehicle’s actual wheels.
Choosing the Right Tire
What should I consider when choosing a 255/55R18 tire for a 2004 Land Rover Trucks Discovery?
Start by confirming that the Discovery is an HSE or SE, or that it actually has the proper 18-inch wheels for the 255/55R18 size. This is a metric radial fitment, so the key selection points are correct size, correct wheel diameter, and suitability for how the truck is used.
A buyer should also look closely at the truck’s current setup rather than assuming the trim badge tells the whole story. If the wheels have been changed, the tire choice may need to follow the wheel that is on the vehicle now. Matching the proper size is more important than comparing tires across different Discovery wheel packages.
What should I consider when choosing a 255/65R16 tire for a 2004 Land Rover Trucks Discovery?
The 255/65R16 size belongs to the 16-inch-wheel configuration used on the 2004 Land Rover Trucks Discovery S. It is a metric radial size, so the first consideration is making sure the truck still uses the correct 16-inch wheels before narrowing the choice to a specific replacement tire.
After that, focus on preserving the correct fitment for the vehicle’s actual wheel and clearance setup. Many Discovery trucks have lived long enough to see wheel swaps or suspension changes, so the safest approach is to verify what is on the vehicle today. A size that belongs on one sub-model should not be assumed to suit another without checking.
How do I choose between the available tire sizes for a 2004 Land Rover Trucks Discovery?
The choice is not between two optional sizes for the same setup. A 2004 Land Rover Trucks Discovery uses 255/55R18 or 255/65R16 based on sub-model and wheel diameter. HSE and SE use the 18-inch size, while the S uses the 16-inch size.
That means the decision should begin with verification, not preference. Check the sub-model, inspect the wheel diameter, and make sure the truck has not been altered from its original wheel package. Once the proper primary size is confirmed, then it makes sense to compare individual tires within that size for use, appearance, and overall fitment confidence.
Restoration & Appearance
Which tire should I choose for a period-style 2004 Land Rover Trucks Discovery?
A period-style choice for a 2004 Land Rover Trucks Discovery starts with keeping the correct primary size for the truck’s sub-model and wheel diameter. That means 255/55R18 for HSE and SE models, or 255/65R16 for the S, rather than treating the two sizes as interchangeable style options.
Appearance on a late classic SUV is shaped heavily by wheel-and-tire proportion, so preserving the intended profile matters. A truck kept close to its original presentation usually benefits from staying with the proper rim diameter and matching size family. If exact historical presentation matters, compare the vehicle against marque-specific reference material before making cosmetic changes.
Does correct tire fitment matter for a 2004 Land Rover Trucks Discovery restoration?
Yes. Correct tire fitment matters on a 2004 Land Rover Trucks Discovery because the wrong rim diameter or profile can change the truck’s stance and visual balance. Since this model uses both 16-inch and 18-inch fitments across sub-models, restoration-minded owners should treat wheel and tire matching as part of the vehicle’s overall presentation.
Even when two sizes appear close in overall dimension, they do not create the same look once mounted on different wheel diameters. A careful restoration approach starts by confirming the truck’s proper sub-model fitment and then checking that the wheels on the vehicle still match it. That helps preserve proportions without making unsupported assumptions about originality.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2004 Land Rover Trucks Discovery?
Yes. Modifications can affect tire fitment on a 2004 Land Rover Trucks Discovery, especially if the truck has aftermarket wheels, suspension changes, or body alterations. Since this model already uses two different wheel diameters across sub-models, any change in wheel size or offset can complicate what tire size belongs on the vehicle.
A smart check includes the actual rim diameter, wheel width, and available clearance at the fenders and steering components. Ride-height changes can also alter how a tire behaves under compression or at full lock. On an older Discovery, it is worth inspecting the vehicle in person rather than relying on the assumption that it still matches stock configuration.
What should I inspect before driving a 2004 Land Rover Trucks Discovery on new tires?
Before road use, inspect the wheels for damage, confirm that the tire size matches the actual rim diameter, and check that the tires are mounted and inflated properly. It also helps to look over the suspension and steering components, since worn parts can affect how a 2004 Land Rover Trucks Discovery tracks and clears the tires.
A short clearance check is worthwhile after installation, especially through full steering travel and over mild suspension movement. Older SUVs should also be checked for uneven wear patterns, air loss, cuts, bulges, and cracking elsewhere on the vehicle’s remaining tires if only one axle is being serviced. That extra inspection helps catch problems before the first longer drive.
What should I check before a longer drive in a 2004 Land Rover Trucks Discovery?
Before a longer drive, verify tire pressure, inspect tread and sidewalls, and make sure the 2004 Land Rover Trucks Discovery is riding on the correct size for its wheel setup. A quick look for cracking, bulges, punctures, or uneven wear is especially important on a vehicle that may spend part of its life parked.
Longer trips also justify checking for slow air loss and confirming that steering feels normal with no signs of rubbing or clearance trouble. On a Discovery with older suspension parts or non-stock wheels, a brief pre-trip inspection can prevent surprises on the road. Tire condition matters just as much as having the correct nominal size.
