Lexus LS500 Tires

Lexus LS500 applications from 2018 through 2025 use three sizes in this model group: 245/50R19, 245/45R20, and 275/40R20. The 245/50R19 size mounts on a 19-inch rim, while both 245/45R20 and 275/40R20 mount on 20-inch rims. Every listed option is radial construction, and the 20-inch fitment includes both a narrower 245-section size and a wider 275-section size.

The practical takeaway is that year alone does not identify the correct tire on a Lexus LS500. Check the wheel diameter on the car, then confirm whether the vehicle uses the narrower 20-inch size, the wider 20-inch size, or the 19-inch package before replacing anything. Matching the existing size on the car is the safest starting point unless you are working from factory wheel and tire specifications for that exact configuration.

A 245/45R20 tire on a Lexus LS500 is a modern metric radial size. The 245 is the nominal section width in millimeters, the 45 is the aspect ratio, meaning the sidewall height is 45 percent of the section width, the R indicates radial construction, and the 20 is the wheel diameter in inches. The same decoding method applies to the other Lexus LS500 sizes in this group, including 245/50R19 and 275/40R20.

Knowing how the code reads helps prevent a common mistake: seeing a similar first number and assuming the tire is interchangeable. On a Lexus LS500, a change from 19-inch to 20-inch wheel diameter or from a 245-width tire to a 275-width tire is a real fitment difference, not a minor variation. Read the full size code on the tire sidewall and compare it with the wheel actually fitted to the car.

A 2018 Lexus LS500 has three tire sizes listed because the model group includes more than one wheel and tire configuration in the same model year. The sizes are 245/50R19, 245/45R20, and 275/40R20, which means the split is not just by tire width but also by rim diameter, since both 19-inch and 20-inch wheels appear. The wider 275/40R20 also indicates a distinct 20-inch fitment within the same year range.

That means a 2018 Lexus LS500 should be identified by its actual wheel setup, not by year badge alone. If the car is on 19-inch wheels, the correct replacement path is different than on a 20-inch car, and the wider 275-section tire should not be assumed to fit every 20-inch position. Check the sidewall on the current tires and verify the wheel diameter before choosing replacements.

Lexus LS500 fitments in this model group use two rim diameters: 19 inches and 20 inches. The 245/50R19 size is built for a 19-inch rim, while the 245/45R20 and 275/40R20 sizes are built for 20-inch rims. Both diameters appear across the full 2018 through 2025 span, so there is no single wheel size that covers every Lexus LS500 in these years.

The key buyer step is to confirm the actual wheel diameter on the car before comparing tread style, brand, or sidewall appearance. A 19-inch tire will not substitute for a 20-inch wheel, even if the section width looks similar on paper. If the car has factory-size tires still fitted, the easiest check is the full size molded into the existing sidewall.

A 2021 Lexus LS500 falls within the same three-size group used from 2018 through 2025: 245/50R19, 245/45R20, and 275/40R20. The correct size depends on the wheel package actually installed on the car, since the model group includes both 19-inch and 20-inch wheel diameters and also includes a wider 20-inch fitment. Every one of those sizes is a radial, but they are not interchangeable across wheel diameters or positions.

Start with the tire sidewall already on the car and read the full code exactly as molded. Then compare front and rear sizes if the vehicle is equipped with 20-inch wheels, since the wider 275/40R20 should be treated as a distinct fitment rather than assumed across all four corners. Wheel diameter first, then exact size, is the most reliable sequence for a Lexus LS500 replacement search.

Lexus LS500 tire options here include blackwall, redline, and RWL sidewall styles. Blackwall appears across all three sizes, while redline and RWL are offered in selected 20-inch Pro-Trac Street Pro III applications in 245/45R20 and 275/40R20. That gives the Lexus LS500 a broader visual range than many late-model luxury applications, which commonly stay blackwall only.

For a factory-style late-model luxury appearance, blackwall is the most natural visual match. Redline and raised white letter sidewalls create a more custom or enthusiast-oriented look, so the right choice depends on whether the car is being kept close to standard presentation or given a personalized stance. Sidewall style should always be chosen after the exact wheel diameter and size have been confirmed.

Lexus LS500 tires in these sizes are available from BFGoodrich, Nitto, Pro-Trac, and M&H Racemaster. BFGoodrich covers all three listed sizes, Nitto appears in the two 20-inch sizes, Pro-Trac offers 20-inch options with alternate sidewall styles, and M&H Racemaster appears in 275/40R20. That creates a mix of performance-oriented and specialty choices within the same model group.

Brand selection should follow fitment confirmation, not replace it. Once the correct size is established, compare the available brands by intended use, visual style, and whether the car is being driven as a road luxury sedan, shown as a custom, or built around a more specialized performance purpose. Matching the brand to the Lexus LS500’s actual use matters more than picking by name alone.

Lexus LS500 options here include several distinct tire series: g-Force Sport Comp 2, g-Force Comp 2 AS, g-Force Phenom T/A, Nitto NT555 G2, Street Pro III, and Drag Radial. Those names reflect different product families rather than one universal tread pattern across every size. Some are general high-performance radial offerings, some are all-season oriented within the same broader family, and others are specialty products with a more custom or competition-minded identity.

That variety means the right series depends on how the Lexus LS500 is actually used. A car kept close to luxury road duty may call for a different tire family than a custom build wearing redlines or a more specialized rear application. After locking in the exact size, compare series by construction family, sidewall appearance, and the intended role of the car rather than assuming every 20-inch option serves the same purpose.

A Lexus LS500 stored on fitted tires should be kept in a cool, dry, dark environment away from direct sunlight, ozone sources, and large temperature swings. Proper inflation matters during storage because an underinflated tire can develop flat spotting more easily on a heavy luxury sedan. Clean floors and regular movement also help reduce long-term stress where the tire meets the ground.

If the Lexus LS500 sits for extended periods, move it periodically or support it in a way that reduces constant load on one contact patch. Avoid leaving the car parked for months on hot concrete with low air pressure. Good storage habits are especially important on a large sedan because the tire carries substantial vehicle weight even when the car is not being driven.

Tires on a Lexus LS500 should be inspected regularly even if the car sees relatively low mileage. A visual check every month and a closer inspection before longer drives is a sensible routine for a late-model luxury car that may alternate between daily use and periods of storage. Look for pressure loss, tread wear irregularities, sidewall damage, aging signs, and anything unusual between front and rear tires.

Regular inspection matters because the Lexus LS500 uses multiple sizes and may carry different fitments depending on wheel package. Catching a mismatch, uneven wear pattern, or damage early is far easier than dealing with a failure on the road. Any vibration, pull, or sudden change in ride quality should trigger a closer look at the tires and wheels before further driving.

Tires on a Lexus LS500 should be replaced when age, structural condition, or visible deterioration becomes a concern, even if tread depth still looks usable. Cracking, bulges, repeated air loss, impact damage, or long-term hardening are stronger replacement signals than tread appearance alone on a low-mileage collector or secondary-use car. The same rule applies to any specialty sidewall style as well as standard blackwall tires.

A car that spends much of its life parked can age its tires before it wears them out. If the Lexus LS500 carries older tires whose service history is unclear, age and condition deserve as much attention as miles driven. Replacement decisions should be made conservatively, especially on a heavy luxury sedan where ride quality can mask developing tire problems until they become more serious.

The Lexus LS500 tire options listed here are radial tires in the correct size families for this model group, but road suitability still depends on choosing the exact size and type that match the wheel setup and intended use of the car. A standard road-driven Lexus LS500 should remain on an appropriate road tire in the correct 19-inch or 20-inch size. Specialty products in the list should be judged by their intended purpose rather than treated as universal replacements.

Safe road use starts with verifying the wheel diameter, matching the exact sidewall size, and inspecting the age and condition of the tire before driving. Inflation, alignment, and any staggered front-to-rear arrangement should also be correct. If the Lexus LS500 is equipped with a specialty tire chosen for appearance or niche performance use, be sure that use matches how the car will actually be driven.

Before driving a Lexus LS500, check tire pressure, visible sidewall condition, tread condition, and the exact size fitted at each wheel position. Because this model group includes both 19-inch and 20-inch wheel diameters and also a wider 20-inch fitment, it is important to make sure the tire arrangement on the car is consistent and intentional. Any cuts, bulges, punctures, or unusual wear should be addressed before road use.

A quick walkaround is especially worthwhile if the car has been sitting or has recently had wheel or tire work done. Confirm that all four tires are properly seated, valve caps are in place, and there is no sign of air loss. On a Lexus LS500, smooth high-speed manners depend heavily on tire condition, so small issues that seem cosmetic can still affect road behavior.

A Lexus LS500 should be driven at speeds appropriate to the exact tire fitted, its condition, inflation, and intended service category rather than by model name alone. The sizes listed here are modern radial sizes, and several products include performance-oriented markings, but no used or aged tire should be driven as if sidewall markings override current condition. Tire age, wear, repairs, and storage history all matter as much as the printed size.

The practical rule is to drive a Lexus LS500 conservatively until the exact tires on the car have been inspected and their condition is known. A freshly fitted, properly maintained set in the correct size supports the car very differently than an older set with uncertain history. If there is any question about age, damage, or prior use, treat the car cautiously and have the tires evaluated before sustained higher-speed driving.