The 2004 Jaguar XKR blends grand touring refinement with supercharged performance, giving the final years of the X100 coupe and convertible a distinctly modern stance compared with earlier Jaguars. Tire fitment plays a real role in that character, because this XKR uses staggered radial sizes with different front and rear fitments and either 18-inch or 20-inch wheel combinations. That means the first decision is confirming which wheel setup is on the car before choosing tires. Available options range from blackwall performance radials to RWL and redline treatments in certain sizes, so appearance can shift along with road manners. For any XKR that has seen wheel changes, fitment should be verified at all four corners before replacement.
Which Tire Size Is Right for The 2004 Jaguar XKR
The 2004 Jaguar XKR uses four primary tire sizes across a staggered front-and-rear setup, and those sizes differ by wheel package. Front fitment is either 245/45R18 or 255/35R20, while rear fitment is either 255/45R18 or 285/30R20. The first step is confirming whether the car is on 18-inch or 20-inch wheels, because that determines the correct front and rear combination before comparing brands, sidewall styles, or tire series.
245/45R18 is a metric radial size in which 245 is the nominal section width in millimeters, 45 is the aspect ratio, R identifies radial construction, and 18 is the rim diameter in inches. On the 2004 Jaguar XKR, this size serves as an 18-inch front fitment and supports the car's staggered layout rather than a universal four-corner application. Available choices in this size center on BFGoodrich and Nitto performance-oriented blackwall radials across series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, and NT555 G2. It is the right size to evaluate when the XKR retains its 18-inch front wheel setup and front tire replacement is the immediate need.
255/35R20 is a metric radial size with a 255-millimeter nominal section width, a 35-series profile, and a 20-inch rim diameter. On the 2004 Jaguar XKR, this is the front fitment for the 20-inch wheel combination, so it should be matched with the corresponding rear size rather than selected on its own. Product choices include blackwall radials from BFGoodrich and Nitto, along with Pro-Trac Street Pro III options in RWL and redline for owners who want a more distinctive sidewall treatment. This size matters most when the car is already equipped with 20-inch front wheels and the owner wants to preserve that lower-profile presentation.
255/45R18 is a metric radial size that uses a 255-millimeter nominal width, a 45-series aspect ratio, and an 18-inch rim diameter. For the 2004 Jaguar XKR, this size is used at the rear with the 18-inch wheel setup, making it part of the factory-style stagger rather than a front-and-rear shared fitment. Buyers can compare blackwall BFGoodrich and Nitto tires with Pro-Trac Street Pro III offerings in RWL and redline, which gives this rear size both performance-oriented and appearance-focused choices. It is the size to focus on when maintaining the 18-inch rear wheel package and matching the car's front-to-rear balance.
285/30R20 is a metric radial size with a 285-millimeter nominal section width, a 30-series profile, and a 20-inch rim diameter. On the 2004 Jaguar XKR, it serves as the rear tire for the 20-inch setup, so it belongs with 255/35R20 at the front rather than with the 18-inch combination. Available products include a blackwall Nitto NT555 G2 and Pro-Trac Street Pro III options in RWL and redline, giving this size a mix of understated and more traditional muscle-inspired sidewall looks. It deserves close attention on any XKR running 20-inch rear wheels, especially if the car's stance or wheel package has been changed over time.
The 2004 Jaguar XKR uses separate front and rear fitments, and those sizes change with the wheel package. Checking whether the car is on the 18-inch or 20-inch setup matters before selecting tires, because the front and rear sizes must stay correctly paired.
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2004 Jaguar XKR Base Front
The 2004 Jaguar XKR Base Front uses one of two radial front sizes depending on whether the car has the 18-inch or 20-inch wheel combination. Tire selection here starts with confirming wheel diameter, then choosing among the available blackwall, RWL, or redline options where those sidewall treatments are offered.
The 2004 Jaguar XKR Base Rear also uses one of two radial sizes tied to the car's 18-inch or 20-inch staggered setup. Rear replacement should be matched to the corresponding front package so the overall stance and intended front-to-rear fitment relationship remain consistent.
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 2004 Jaguar XKR Tires for Sale
Available 2004 Jaguar XKR tire choices span BFGoodrich, Nitto, and Pro-Trac across the 18-inch and 20-inch staggered sizes. Buyers can compare blackwall performance radials with selected RWL and redline options, along with series such as g-Force Comp 2 AS, g-Force Sport Comp 2, g-Force Phenom T/A, NT555 G2, and Street Pro III.
XKR owners usually need to sort out staggered front-and-rear sizing, 18-inch versus 20-inch wheel fitment, and the available sidewall and brand choices. These answers focus on selecting the correct radial size for the exact 2004 Jaguar XKR setup on the car.
Tire Size & Fitment
What tire size fits a 2004 Jaguar XKR?
The 2004 Jaguar XKR uses a staggered radial tire setup, so the front and rear sizes are different. With the 18-inch wheel package, the front uses 245/45R18 and the rear uses 255/45R18. With the 20-inch wheel package, the front uses 255/35R20 and the rear uses 285/30R20.
The key is identifying which wheel package is actually on the car before ordering tires. An XKR with aftermarket wheels or a mixed set from a previous owner may not match the original combination, so checking all four tire sidewalls and confirming wheel diameter at both axles helps prevent buying the wrong front or rear size.
What size rim does a 2004 Jaguar XKR use?
A 2004 Jaguar XKR uses either 18-inch or 20-inch rims, depending on the tire package on the car. The 18-inch setup pairs 245/45R18 front tires with 255/45R18 rear tires, while the 20-inch setup pairs 255/35R20 front tires with 285/30R20 rear tires.
Rim diameter should be confirmed before anything else because none of these sizes cross over between 18-inch and 20-inch wheels. Once diameter is verified, it also helps to compare the wheel width against the tire's approved rim-width range, especially if the Jaguar has non-stock wheels or spacers.
Why does the 2004 Jaguar XKR have more than one tire size?
The 2004 Jaguar XKR has more than one tire size because it uses a staggered arrangement with different front and rear tires, and it was fitted with either an 18-inch or 20-inch wheel combination. That creates four primary sizes across the model: two fronts and two rears, matched by wheel diameter.
This means tire selection is not just a matter of finding one size that fits the whole car. The correct choice depends on the exact front and rear setup already installed, and any replacement should preserve the intended pairing unless the entire wheel-and-tire package is being evaluated together.
Choosing the Right Tire
What should I consider when choosing a 2004 Jaguar XKR tire?
Start with the basics: confirm whether the XKR is on the 18-inch or 20-inch staggered setup, then verify the correct front and rear sizes. Every primary fitment on this car is radial, so the real choice becomes tire series, brand, sidewall style, and whether the wheel width matches the tire's approved range.
It also helps to think about how the car is used. A regularly driven grand touring coupe may call for a different product character than a weekend car focused on appearance, and an XKR with changed wheels, altered ride height, or suspension work deserves a full clearance and compatibility check before final selection.
What sidewall styles are available for 2004 Jaguar XKR tires?
Blackwall is the most common sidewall style across the 2004 Jaguar XKR tire sizes, especially in the BFGoodrich and Nitto offerings. Selected Pro-Trac Street Pro III sizes also add RWL and redline choices, including 255/35R20, 255/45R18, and 285/30R20, giving the car a more assertive visual treatment.
That makes sidewall style an appearance decision as much as a fitment decision. A blackwall tire keeps the presentation more understated, while raised white letter or redline sidewalls create a stronger custom look, so the right choice depends on whether the Jaguar is being kept subtle, personalized, or shown.
What brands offer tires for the 2004 Jaguar XKR?
Tires for the 2004 Jaguar XKR are available from BFGoodrich, Nitto, and Pro-Trac, depending on the exact size. BFGoodrich appears across several g-Force series, Nitto covers key sizes with NT555 G2 options, and Pro-Trac Street Pro III adds fitments with alternate sidewall treatments in selected 18-inch and 20-inch sizes.
Brand choice should still come after confirming the correct size at each axle. Once that is settled, comparing series, sidewall presentation, rim-width compatibility, and load figures where stated gives a clearer picture than choosing by brand name alone, especially on a staggered-performance car like the XKR.
Restoration & Appearance
Which tire should I choose for a period-style 2004 Jaguar XKR?
A period-style 2004 Jaguar XKR tire choice starts with keeping the correct staggered sizing and wheel diameter already associated with the car. Since this is a modern radial-fitment performance Jaguar, the most authentic-looking approach usually comes from selecting the proper 18-inch or 20-inch front-and-rear combination before narrowing the field by series or sidewall treatment.
Appearance then depends on how original or personalized the Jaguar is meant to look. Blackwall tires keep the presentation closer to a restrained grand touring style, while RWL or redline options can push the car toward a more customized visual statement without changing the underlying size format.
How does tire construction affect the appearance of a restored 2004 Jaguar XKR?
On a 2004 Jaguar XKR, tire construction is straightforward because the primary fitments are radial. That means the appearance difference comes less from bias-ply versus radial questions and more from profile, wheel diameter, and sidewall style, particularly when comparing 18-inch and 20-inch packages or blackwall against RWL and redline choices.
For a restoration-oriented car, staying with the correct front and rear size pairing does more for the overall look than chasing an aggressive sidewall treatment that was not part of the car's intended presentation. When exact originality matters, period photos and marque-specific references are worth checking before making a cosmetic change.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2004 Jaguar XKR?
Yes, modifications can affect tire fitment on a 2004 Jaguar XKR. Aftermarket wheels, spacers, suspension changes, lowering, or body alterations can all change the relationship between the tire and the fender, steering components, or suspension, especially on a car that already uses a staggered setup with different front and rear sizes.
That is why the current wheel diameter and actual tire size should be checked on the car rather than assumed. Clearance at full steering lock and through suspension travel deserves attention, and wheel width should be compared against the tire's accepted range before selecting a replacement.
What should I inspect before driving a 2004 Jaguar XKR on new tires?
Before driving a 2004 Jaguar XKR on new tires, inspect tire pressure, wheel lug torque, valve stems, and the basic condition of the wheels themselves. It is also wise to check that the front and rear sizes are mounted in the correct positions, since the XKR uses different fitments at each axle.
A short visual check around the car can prevent trouble later. Look for rubbing marks, uneven suspension height, cuts, bulges, or any sign that an older wheel or alignment issue is still present, then recheck pressure and overall feel after the first drive once the tires have settled in.
What should I check before a longer drive in a 2004 Jaguar XKR?
Before a longer drive, make sure the 2004 Jaguar XKR has the correct front and rear tire sizes, proper inflation, and no visible signs of cracking, puncture damage, or irregular wear. On a grand touring car like the XKR, those basics matter just as much as tread depth, especially if the car is driven only occasionally.
Longer trips are also a good reason to inspect alignment behavior and air retention in the days beforehand. A tire that slowly loses pressure, shows shoulder wear, or contacts the body under load may point to a fitment or chassis issue that deserves attention before the car is asked to cover real distance.
