The 2018 Lexus LS500h sits at the intersection of flagship luxury and hybrid refinement, representing a modern LS that prioritizes quiet long-distance comfort as much as technology and road manners. That makes tire selection especially important, because the right fitment helps preserve the car’s balance of ride quality, steering response, and visual proportion. This model uses two primary radial sizes, 245/50R19 and 245/45R20, so the first step is confirming which wheel package is on the car. From there, choices center on tire series, blackwall versus appearance-oriented sidewall treatments, and the overall character you want to maintain for daily driving or careful enthusiast use.
Which Tire Size Is Right for The 2018 Lexus LS500h
The 2018 Lexus LS500h uses two primary tire sizes, and the difference comes down first to wheel diameter: 19-inch or 20-inch rims. Both fitments are radial, and the LS500h Base can use either size, so the key step is confirming the actual wheel package on the car before comparing tire series, sidewall style, and rim-width compatibility.
A 245/45R20 tire uses a 245-millimeter section width, a 45-series profile, radial construction, and a 20-inch rim. On the 2018 Lexus LS500h, this fitment suits the larger wheel package while keeping a modern performance-oriented metric format. Available choices include BFGoodrich, Nitto, and Pro-Trac, with blackwall, redline, and raised white letter sidewall treatments depending on the tire series. This size is the one to evaluate if the car is already on 20-inch wheels and you want to compare a more understated modern look with a more distinctive appearance-driven presentation.
A 245/50R19 tire carries the same 245-millimeter nominal width but uses a 50-series profile on a 19-inch rim with radial construction. For the 2018 Lexus LS500h, it represents the alternate primary fitment tied to the 19-inch wheel setup rather than a substitute for the 20-inch package. Current choices center on BFGoodrich blackwall tires across several g-Force series, with some variation in recommended rim-width range and load-related specifications. This is the size to pursue when the car has 19-inch wheels and the goal is preserving the intended fitment without moving into a different rim diameter.
Sub-model fitment is straightforward here because the covered LS500h Base uses the same two primary tire sizes tied to different wheel packages. Checking the exact wheel diameter on the car still matters, since 19-inch and 20-inch fitments are both used within this model line.
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2018 Lexus LS500h Base
The 2018 Lexus LS500h Base uses radial tires in either 245/50R19 or 245/45R20, depending on the wheel setup installed on the car. Tire selection starts with confirming rim diameter, then narrowing the choice by tire series, sidewall appearance, and the kind of driving character you want to preserve.
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 2018 Lexus LS500h Tires for Sale
Available 2018 Lexus LS500h tire choices focus on the two factory fitment sizes, with BFGoodrich covering both sizes and Nitto and Pro-Trac adding more variety in 245/45R20. Buyers can compare blackwall, redline, and raised white letter presentations along with several modern radial series.
These FAQs focus on the actual tire sizes used on the 2018 Lexus LS500h, how to confirm the correct rim package, and how to compare available radial tire options by series, sidewall style, and real-world fitment considerations.
Tire Size & Fitment
What tire size fits a 2018 Lexus LS500h?
The 2018 Lexus LS500h uses two primary tire sizes: 245/50R19 and 245/45R20. Both are radial fitments, and both are used on the LS500h Base depending on which wheel package is on the car.
That means the correct choice is determined by the actual rim diameter already installed, not by model name alone. A quick check of the tire sidewall or wheel size will usually confirm whether the car needs the 19-inch or 20-inch fitment before comparing tire series, sidewall style, and other product details.
What size rim does a 2018 Lexus LS500h use?
A 2018 Lexus LS500h uses either a 19-inch or 20-inch rim, depending on the tire size on the vehicle. The 245/50R19 fitment uses a 19-inch rim, while the 245/45R20 fitment uses a 20-inch rim.
Rim diameter is the first thing to confirm before shopping, because these two tire sizes are tied to different wheel packages. Looking only at tread width is not enough, since both sizes share a 245-millimeter width but require different wheel diameters and may offer different product choices once the correct fitment is identified.
Why does the 2018 Lexus LS500h have more than one tire size?
The 2018 Lexus LS500h has more than one tire size because it was fitted with more than one wheel diameter. The two primary sizes, 245/50R19 and 245/45R20, are both valid LS500h fitments, but they correspond to different rim packages.
This is why identifying the wheel setup on the car matters more than starting with the sub-model name alone. The LS500h Base can use either size, so the buyer should confirm the current wheel diameter and then compare tire options within that exact size instead of assuming one fitment applies to every car.
Choosing the Right Tire
What should I consider when choosing a 245/45R20 tire for a 2018 Lexus LS500h?
Start with the correct 245/45R20 size and confirm that the tire is intended for a 20-inch wheel. In this fitment, choices include BFGoodrich, Nitto, and Pro-Trac, with several radial series and sidewall treatments including blackwall, redline, and raised white letter.
Once size is settled, compare the character of the tire you want on the car. Some owners will prefer a restrained modern look, while others may want a more distinctive sidewall presentation. Rim-width compatibility is also worth checking, especially if the LS500h has aftermarket wheels rather than the original 20-inch wheel setup.
What sidewall styles are available for 2018 Lexus LS500h tires?
Sidewall style depends on the tire size and product line selected. In 245/45R20, available sidewall treatments include blackwall, redline, and RWL, while the 245/50R19 options shown here are blackwall tires.
That makes the 20-inch fitment the more appearance-driven choice if sidewall style matters as much as size. Owners who want a cleaner contemporary presentation may stay with blackwall, while a redline or raised white letter tire changes the visual tone significantly and should be chosen with the LS500h’s overall look in mind.
What brands offer tires for the 2018 Lexus LS500h?
BFGoodrich, Nitto, and Pro-Trac offer tires for the 2018 Lexus LS500h within the sizes used on this model. BFGoodrich appears in both 245/50R19 and 245/45R20, while Nitto and Pro-Trac are represented in the 20-inch fitment.
Brand comparison should come after size confirmation, since the available mix changes by wheel package. It also helps to compare tire series and sidewall style rather than focusing on brand name alone, because the most useful distinction may be appearance, rim-width range, or the general type of radial tire being considered.
Restoration & Appearance
Which tire should I choose for a period-style 2018 Lexus LS500h?
A period-style approach on a 2018 Lexus LS500h usually means staying with the correct modern metric radial size that matches the wheel package already on the car. That keeps the overall presentation aligned with the LS500h’s original design era rather than introducing an obviously mismatched older sizing style.
Appearance then comes down to sidewall treatment and tire series. Blackwall gives the most restrained luxury-sedan look, while redline or raised white letter in 245/45R20 creates a more noticeable visual statement. Owners concerned with preserving a more authentic presentation should verify the car’s original wheel and trim configuration before choosing a more dramatic sidewall style.
How does tire construction affect the appearance of a restored 2018 Lexus LS500h?
On a 2018 Lexus LS500h, construction does not create a bias-ply-versus-radial appearance question because the primary fitments are radial tires. The more visible styling differences come from sidewall treatment, tread character, and whether the car wears the 19-inch or 20-inch wheel package.
That keeps the appearance decision centered on tire presentation rather than construction type. A blackwall tire tends to preserve the LS500h’s formal modern look, while redline or raised white letter options on 245/45R20 push the car toward a more custom visual effect. Matching the tire’s look to the wheel design and intended use usually produces the most cohesive result.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2018 Lexus LS500h?
Yes. Modifications can affect tire fitment on a 2018 Lexus LS500h, especially if the car has aftermarket wheels, altered suspension height, or changes in wheel width or offset. Even when the tire size matches one of the correct primary fitments, the surrounding wheel and body setup can change the result.
A modified LS500h should be checked for clearance at full steering lock and through suspension travel before settling on a tire. Owners should also confirm the actual rim diameter and wheel width on the car, since 245/50R19 and 245/45R20 are both valid sizes but belong to different wheel packages.
What should I inspect before driving a 2018 Lexus LS500h on new tires?
Before driving a 2018 Lexus LS500h on new tires, inspect the wheels for damage, confirm the correct tire size for the installed rim diameter, and make sure each tire is properly inflated and seated. It is also wise to look over valve stems, wheel fasteners, and general clearance around the tire.
A short initial road test can help reveal vibration, rubbing, or any issue related to balance or installation. After that, recheck inflation and take another look at the tire-to-fender and tire-to-suspension clearances, particularly if the car uses non-original wheels or has been altered from its standard ride height.
How often should tires on a 2018 Lexus LS500h be inspected?
Tires on a 2018 Lexus LS500h should be inspected regularly, not just when tread looks worn. A visual check for cuts, bulges, uneven wear, cracking, or persistent air loss is worthwhile on any modern luxury car, especially one that may sit for periods between drives.
Routine inspection helps catch issues early and also confirms that the car is still wearing the correct 19-inch or 20-inch fitment. Owners who drive infrequently should pay extra attention to age-related condition and flat-spotting, while cars used more often benefit from periodic checks of inflation, wear pattern, and any signs of contact from wheel or suspension changes.
