The 2021 Lexus LS500 is a modern flagship luxury sedan that balances quiet long-distance comfort with sharp styling and, in F Sport form, a more assertive stance. Tire choice matters here because this car uses more than one factory-size configuration, including 245/50R19, 245/45R20, and a staggered 20-inch setup with 245/45R20 in front and 275/40R20 in the rear. All of these are radial fitments, but the real decision is matching the exact wheel and sub-model setup before comparing brands, tire series, and sidewall treatments. That matters whether the goal is preserving the LS500's original road manners or tailoring the look with blackwall, redline, or raised white letter styling.
Which Tire Size Is Right for The 2021 Lexus LS500
The 2021 Lexus LS500 uses three primary tire sizes, and the right one depends on the exact sub-model and wheel setup. Two rim diameters are involved, 19-inch and 20-inch, and F Sport fitment also adds a staggered front-and-rear arrangement. Before choosing a tire, confirm whether the car has the Base configuration on 19s or 20s, or the F Sport setup with different front and rear sizes.
245/45R20 is a metric radial size in which 245 indicates nominal section width in millimeters, 45 is the aspect ratio, R identifies radial construction, and 20 is the rim diameter in inches. On the 2021 Lexus LS500, this size is used on a 20-inch wheel and serves either as the Base model's 20-inch fitment or the F Sport front size. Product choices include BFGoodrich, Nitto, and Pro-Trac options with blackwall, redline, and RWL sidewall styles across several series. It is the size to evaluate when the car already runs 20-inch front wheels and the owner wants to compare appearance and road-use priorities within that setup.
245/50R19 is also a metric radial size, with a 245-millimeter nominal section width, a 50-series profile, and a 19-inch rim diameter. For the 2021 Lexus LS500, this size belongs to the Base model's 19-inch wheel configuration and keeps the decision centered on the standard-width fitment rather than a staggered arrangement. Available choices are concentrated in BFGoodrich g-Force series tires, all in blackwall form, with some variation in rim-width specification, load figure, and weight. This is the size to focus on when the car retains its 19-inch wheels and the goal is staying with the proper Base-model fitment.
275/40R20 is a wider metric radial size, where 275 is the nominal section width in millimeters, 40 is the aspect ratio, and 20 is the wheel diameter. On the 2021 Lexus LS500, this size is used at the rear of the F Sport staggered 20-inch setup, making it a role-specific fitment rather than a universal size for every LS500. Product options include BFGoodrich, Nitto, M&H Racemaster, and Pro-Trac choices, with blackwall, redline, and RWL sidewall treatments available depending on the tire series. It should be selected only after confirming the car uses the F Sport rear configuration and the existing rear wheel matches the intended tire's requirements.
Sub-model fitment matters on the 2021 Lexus LS500 because tire size changes with both wheel package and front-to-rear position. The Base model can use either 19-inch or 20-inch fitment, while the F Sport uses a staggered arrangement that must be matched correctly at each axle.
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2021 Lexus LS500 Base
The 2021 Lexus LS500 Base uses two possible radial tire sizes, depending on whether the car is equipped with 19-inch or 20-inch wheels. That makes wheel confirmation the first step, followed by comparing available blackwall, redline, or raised white letter options where the chosen size allows those appearance differences.
The 2021 Lexus LS500 F Sport Front uses 245/45R20 as its front radial tire size. Tire selection here should stay focused on the front axle position within the staggered F Sport setup, especially when matching brand, series, and sidewall presentation to the rear tires.
The 2021 Lexus LS500 F Sport Rear uses 275/40R20 as its rear radial tire size. Because this is the wider rear portion of a staggered setup, the main priority is confirming the rear wheel specification and choosing a tire that suits the intended road use and overall appearance.
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 2021 Lexus LS500 Tires for Sale
Available 2021 Lexus LS500 tires span 245/50R19, 245/45R20, and 275/40R20 radial fitments from BFGoodrich, Nitto, Pro-Trac, and M&H Racemaster. Depending on size, the product grid lets you compare g-Force and Street Pro III series options, blackwall versus redline or RWL styling, and differing rim-width specifications.
Common 2021 Lexus LS500 tire questions usually center on the correct size by sub-model, 19-inch versus 20-inch wheel fitment, staggered F Sport setups, sidewall choices, and what to inspect before putting a luxury sedan like this back on the road.
Tire Size & Fitment
What tire size fits a 2021 Lexus LS500?
The 2021 Lexus LS500 uses three primary tire sizes: 245/50R19, 245/45R20, and 275/40R20. The Base model can use either 245/50R19 or 245/45R20 depending on wheel package, while the F Sport setup uses 245/45R20 in front and 275/40R20 in the rear.
That means the first step is identifying the exact configuration on the car rather than choosing by model name alone. Check the wheel diameter and, on an F Sport, confirm whether you are replacing a front or rear tire. Once the size is confirmed, the next decision becomes comparing available radial tires by series, sidewall style, and wheel-width compatibility.
What size rim does a 2021 Lexus LS500 use?
The 2021 Lexus LS500 uses either 19-inch or 20-inch rims, depending on the specific setup. The 245/50R19 size fits a 19-inch rim, while both 245/45R20 and 275/40R20 are built for 20-inch rims.
Rim diameter needs to match the tire exactly, so a 19-inch tire cannot be mounted on a 20-inch wheel, and the reverse is also true. The LS500 also requires attention to wheel position because F Sport fitment is staggered. Before ordering replacements, verify the wheel diameter stamped on the wheel or confirm the existing tire size currently mounted on the car.
Why does the 2021 Lexus LS500 have more than one tire size?
The 2021 Lexus LS500 has more than one tire size because fitment changes with wheel package and sub-model. The Base model may use either a 19-inch or 20-inch setup, while the F Sport uses a staggered arrangement with 245/45R20 front tires and 275/40R20 rear tires.
That variety means two LS500s from the same model year may not use the same replacement tire. A buyer should confirm the exact wheel package first, then determine whether the car uses the same size at all four corners or different sizes front and rear. Matching the tire to the existing setup is more important than assuming one LS500 size covers the entire model line.
Choosing the Right Tire
What should I consider when choosing a tire for a 2021 Lexus LS500?
Start with the correct size for the exact LS500 configuration: 245/50R19, 245/45R20, or 275/40R20. After that, compare radial construction details such as tire series, sidewall style, load figure where stated, and the wheel-width range that suits the tire you are considering.
A luxury sedan like the LS500 can also be sensitive to setup consistency, especially on staggered F Sport cars. Keeping the right size at each axle helps preserve the intended stance and fitment. It is also worth checking whether the car has aftermarket wheels, because wheel width and overall package changes can affect which tire within the correct size range is the best match.
What sidewall styles are available for 2021 Lexus LS500 tires?
Sidewall style depends on the tire size chosen for the 2021 Lexus LS500. Blackwall options are available across all three primary sizes, while redline and RWL, or raised white letter, treatments appear in select 20-inch fitments such as 245/45R20 and 275/40R20.
That gives the LS500 owner a choice between a more understated modern look and a more stylized presentation. Sidewall appearance should still come after confirming the proper size and wheel setup, especially on the F Sport's staggered arrangement. If visual consistency matters, check that the front and rear tires are available in complementary sidewall treatments before making a final selection.
What brands offer tires for the 2021 Lexus LS500?
The 2021 Lexus LS500 has tire options from BFGoodrich, Nitto, Pro-Trac, and M&H Racemaster, depending on the size. BFGoodrich appears across all three fitments, while Nitto and Pro-Trac are available in selected 20-inch sizes, and M&H Racemaster appears in the 275/40R20 rear fitment.
Brand choice should be viewed alongside size, series, and intended use rather than as a shortcut to the right tire. Some products lean toward general street use, some toward a stronger visual statement, and some are specialized. Once the exact LS500 wheel and axle position are confirmed, compare each brand's available series and sidewall presentation within that specific size.
Restoration & Appearance
Which tire should I choose for a period-style 2021 Lexus LS500?
A period-style approach on a 2021 Lexus LS500 usually means keeping the correct original-size format for the specific wheel package rather than changing to a different size for appearance alone. That points to 245/50R19 on the Base 19-inch setup, 245/45R20 on the Base 20-inch setup, and 245/45R20 front with 275/40R20 rear on the F Sport.
Once the proper fitment is set, appearance can be shaped through sidewall treatment and tire series. Blackwall gives the most restrained modern presentation, while redline or raised white letter options create a more customized look on certain 20-inch sizes. If originality matters closely, use vehicle-specific references to confirm how the car was equipped before choosing a visual style.
Which sidewall style suits a period-style 2021 Lexus LS500?
For a restrained, luxury-oriented appearance on a 2021 Lexus LS500, blackwall is the most natural visual fit and is available in all three primary sizes. Redline and RWL styles are also available in certain 20-inch fitments, giving the car a more expressive look without changing the underlying tire size.
The best choice depends on whether the goal is a subtle sedan presentation or a more personalized stance, especially on F Sport cars with staggered 20-inch wheels. Sidewall style should be chosen only after the correct front, rear, and wheel-diameter fitment is confirmed. Matching the front and rear visual treatment is particularly important when the car uses different sizes at each axle.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2021 Lexus LS500?
Yes. A 2021 Lexus LS500 may use the correct nominal tire size and still have fitment issues if the car has aftermarket wheels, altered wheel offsets, suspension changes, or body modifications. That matters even more on F Sport models because the car already uses a staggered front-and-rear setup.
A modified LS500 should be checked for wheel diameter, wheel width, and clearance at full steering lock and suspension travel before replacement tires are chosen. The presence of 19-inch and 20-inch factory configurations also means assumptions can cause mistakes. Verifying the actual wheels on the car is more reliable than choosing a size based on model year alone.
What should I inspect before driving a 2021 Lexus LS500 on new tires?
Before driving a 2021 Lexus LS500 on new tires, inspect the wheels for damage, confirm the tire sizes match the car's actual setup, and make sure inflation is set correctly for the vehicle. It is also smart to look at valve stems, lug hardware, and overall wheel condition before the car goes back into regular use.
A short post-installation check helps too. Watch for any rubbing, unusual vibration, or pull that could point to a fitment or alignment issue, especially on staggered F Sport cars. After a brief drive, recheck pressure and visually confirm sidewall and fender clearance. That extra inspection step is worthwhile on any LS500 that has been stored, modified, or recently serviced.
How often should tires on a 2021 Lexus LS500 be inspected?
Tires on a 2021 Lexus LS500 should be inspected regularly, with extra attention before longer trips and after any extended storage period. Look for uneven tread wear, cuts, punctures, sidewall cracking, bulges, and pressure loss. On staggered F Sport cars, inspect front and rear tires separately because they do not share the same size or role.
Routine inspection is especially important on a luxury sedan that may alternate between daily driving and lower-use periods. Tire condition can change with age even when tread still looks good. A quick visual and pressure check every month is a sensible habit, and any vibration, noise, or visible damage should prompt a closer inspection before the LS500 is driven at highway speeds.
