The 2019 Lexus RC300 sits in the modern luxury sport coupe category, blending sharp coupe styling with everyday Lexus refinement. For buyers working on tire replacement, the key detail is that this exact RC300 does not use one universal setup across every configuration. Radial fitment appears in 18-inch and 19-inch sizes, and rear-wheel-drive versions can use a staggered 19-inch arrangement with a wider rear tire. Available choices stay focused on performance-oriented blackwall radials from BFGoodrich and Nitto across several g-Force and NT555 series options. The right selection starts with confirming whether the car is AWD or RWD, and whether it is running a square or staggered wheel package.
Which Tire Size Is Right for The 2019 Lexus RC300
Three primary tire sizes apply to the 2019 Lexus RC300, and the correct one depends on the exact drivetrain and wheel setup. Some versions use a square fitment, while RWD 19-inch applications can use a staggered front-and-rear combination. Before choosing a tire, confirm the sub-model and wheel diameter first, then match the correct front or rear size where staggered fitment is used.
Fit(s): (AWD), (RWD) Front, F Sport (AWD), and F Sport (RWD) Front
Construction: Radial|Rim: 19 in
235/40R19 is a metric radial size that uses a 235-millimeter section width, a 40-series aspect ratio, and a 19-inch rim diameter. On the 2019 Lexus RC300, it serves as a 19-inch fitment and is especially important on front positions in staggered RWD and F Sport RWD applications, while some AWD versions also use it. Product choices in this size include BFGoodrich blackwall radials in the g-Force Phenom T/A series. This size is the one to evaluate when the car has 19-inch front wheels and the owner wants to keep the intended performance-oriented tire profile.
235/45R18 is a metric radial size with a 235-millimeter section width, a 45-series profile, and an 18-inch rim diameter. For the 2019 Lexus RC300, this size covers 18-inch square-fitment applications, including AWD and RWD configurations that do not use the staggered 19-inch setup. Available blackwall choices come from BFGoodrich in g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A series. This is the size to focus on when the car is equipped with 18-inch wheels and the goal is to compare tire series within the correct original fitment format.
265/35R19 is a metric radial size that combines a 265-millimeter section width with a 35-series profile on a 19-inch rim. On the 2019 Lexus RC300, this is the wider rear tire used with staggered 19-inch RWD and F Sport RWD arrangements rather than a universal size for every version. Product options include blackwall radials from BFGoodrich and Nitto, with g-Force Sport Comp 2, g-Force Phenom T/A, and NT555 G2 series represented. This size matters when the coupe has a dedicated rear fitment and the tire choice needs to preserve the front-to-rear sizing relationship.
Fitment on the 2019 Lexus RC300 varies by drivetrain and, in some cases, by front and rear axle position. Checking the exact sub-model matters because some versions use a single square size, while others use a staggered 19-inch setup with different front and rear tires.
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2019 Lexus RC300 (AWD)
The 2019 Lexus RC300 AWD appears with both 235/40R19 and 235/45R18 radial fitments, so wheel diameter needs to be confirmed before choosing a tire. Once the wheel setup is verified, selection becomes a matter of matching the correct size and comparing the available performance-oriented blackwall options.
The 2019 Lexus RC300 RWD uses 235/45R18 in a radial construction when equipped with the 18-inch square setup. Tire selection is straightforward here, with the main decision centered on comparing available BFGoodrich series rather than sorting through front-to-rear size differences.
The front position on the 2019 Lexus RC300 RWD staggered setup uses 235/40R19 radial tires. That makes front tire replacement a matter of preserving the correct 19-inch front size and avoiding confusion with the wider rear fitment used on the same car.
The rear position on the 2019 Lexus RC300 RWD staggered setup uses 265/35R19 radial tires. Keeping that wider rear size in place is important when replacing tires on a staggered car, especially if the goal is to maintain the intended front-to-rear fitment relationship.
The 2019 Lexus RC300 F Sport AWD uses 235/40R19 radial tires. Tire selection here stays focused on matching that 19-inch size and choosing among the available blackwall performance options without the added complexity of a separate rear size.
The front axle of the 2019 Lexus RC300 F Sport RWD uses 235/40R19 radial tires as part of a staggered arrangement. Choosing the correct front tire means keeping the proper 19-inch front size and pairing it appropriately with the wider rear fitment.
The rear axle of the 2019 Lexus RC300 F Sport RWD uses 265/35R19 radial tires. This rear-specific size should be evaluated separately from the front tire, since the staggered setup depends on maintaining the correct wider rear application.
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 2019 Lexus RC300 Tires for Sale
Available 2019 Lexus RC300 tire choices focus on blackwall radial performance tires in 18-inch and 19-inch sizes. BFGoodrich covers most applications through the g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A lines, while 265/35R19 also includes a Nitto NT555 G2 option.
These FAQs focus on the 2019 Lexus RC300 tire questions that matter most, including size by sub-model, 18-inch versus 19-inch fitment, staggered RWD setups, product selection, and the inspections worth making before regular road use.
Tire Size & Fitment
What tire size fits a 2019 Lexus RC300?
The 2019 Lexus RC300 uses three primary radial tire sizes across its configurations: 235/45R18, 235/40R19, and 265/35R19. The 18-inch 235/45R18 size appears on square-fitment applications, while 19-inch cars may use 235/40R19 or a staggered setup with 235/40R19 in front and 265/35R19 in the rear.
Choosing the right one starts with identifying whether the car is AWD or RWD and whether it has 18-inch or 19-inch wheels. On staggered RWD versions, front and rear sizes are different, so the wheel position matters just as much as the drivetrain when ordering replacement tires.
What size rim does a 2019 Lexus RC300 use?
The 2019 Lexus RC300 uses either 18-inch or 19-inch rims, depending on the exact configuration. The 235/45R18 size mounts on an 18-inch rim, while both 235/40R19 and 265/35R19 are 19-inch tire sizes designed for 19-inch wheels.
That makes wheel diameter the first detail to confirm before selecting a tire, especially on AWD models where more than one fitment appears. If the car has aftermarket wheels, check the actual wheel markings and current tire size rather than relying only on model designation or trim naming.
Why does the 2019 Lexus RC300 have more than one tire size?
More than one tire size appears on the 2019 Lexus RC300 because fitment changes with drivetrain, wheel package, and whether the car uses a square or staggered arrangement. Some versions use a single size at all four corners, while certain RWD applications split the setup between a narrower front tire and a wider rear tire.
That difference affects both replacement planning and rotation strategy. A square setup is simpler because all four tires match, but a staggered setup requires attention to axle position so the correct front and rear sizes stay in place and maintain the intended wheel-and-tire relationship.
Choosing the Right Tire
What should I consider when choosing a 235/45R18 tire for a 2019 Lexus RC300?
Start by confirming that the car actually uses the 235/45R18 fitment and not one of the 19-inch alternatives. In this size, the available choices are radial blackwall tires from BFGoodrich across several series, including g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A, with rim-width specs centered around 7.5 to 9 inches.
Once size and wheel diameter are confirmed, the real comparison is between tire series and product details rather than fitment format. It helps to consider the intended use of the coupe, the current wheel width, and whether matching all four tires on a square setup matters for consistency in appearance and road manners.
What brands offer tires for the 2019 Lexus RC300?
Tire options for the 2019 Lexus RC300 come from BFGoodrich and Nitto, depending on size. BFGoodrich covers 235/40R19, 235/45R18, and 265/35R19 applications, while Nitto appears in the 265/35R19 rear size through the NT555 G2 series.
Brand choice should come after the correct size is confirmed for the car's drivetrain and wheel setup. On 18-inch square applications, the comparison stays within BFGoodrich series, while staggered 19-inch rear fitment opens a second brand option that can be weighed alongside construction details, rim-width suitability, and overall tire purpose.
What tire series are available for the 2019 Lexus RC300?
The 2019 Lexus RC300 is covered by several performance-oriented radial series, including BFGoodrich g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A. In 265/35R19, Nitto NT555 G2 is also available, giving the wider rear RWD fitment another series option.
Series names matter because they help separate the product grid into distinct tire lines even when the size stays the same. After confirming the correct size, compare the series that exist within that fitment and look at supporting details such as rim-width compatibility, load information where shown, and whether the same line is available for both front and rear positions.
Restoration & Appearance
Does correct tire fitment matter for a 2019 Lexus RC300 restoration?
Correct tire fitment still matters on a 2019 Lexus RC300, even though this is a modern performance coupe rather than a traditional restoration-era vehicle. The right diameter, section width, and front-to-rear arrangement help preserve the car's intended stance, especially on RWD versions that use a staggered 19-inch setup.
Appearance on this model is less about whitewalls or vintage sidewall styling and more about keeping the proper wheel-and-tire proportions. Matching the correct 18-inch or 19-inch fitment, and keeping the wider rear size where required, usually has a bigger visual impact than changing between the available blackwall performance series.
How does tire construction affect the appearance of a restored 2019 Lexus RC300?
Construction is straightforward on the 2019 Lexus RC300 because the available fitments and products are radial. That means appearance differences come less from bias-ply versus radial shape and more from choosing the right modern metric size, wheel diameter, and whether the car keeps a square or staggered arrangement.
For a restoration-oriented owner, the visual priority is usually maintaining the intended profile and proportion of the coupe. A 235/45R18 square setup presents differently from a 19-inch staggered package, so confirming the original wheel arrangement on the car matters more here than searching for a different construction style.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2019 Lexus RC300?
Yes, modifications can affect tire fitment on a 2019 Lexus RC300. Changes such as aftermarket wheels, altered wheel width, offset differences, suspension lowering, or body modifications can change how a 235/45R18, 235/40R19, or 265/35R19 tire sits in the wheelwell and how much clearance remains.
That is especially important on staggered RWD cars, where the wider rear tire already uses a dedicated size. Before replacing tires on a modified RC300, verify actual wheel diameter and width, then check steering clearance, inner suspension clearance, and fender space rather than assuming the stock fitment still applies unchanged.
What should I inspect before driving a 2019 Lexus RC300 on new tires?
Before regular road use, inspect the wheel size, confirm that each tire is mounted in the correct front or rear position, and make sure inflation is set properly for the vehicle's needs. It is also wise to check for any interference at full steering lock and to verify that lug hardware and wheel mounting surfaces are in good condition.
A short test drive should be followed by another look for rubbing, uneven seating, or pressure loss. On staggered RC300 setups, double-check that the wider 265/35R19 tires stayed on the rear axle and that the front 235/40R19 tires are not being mixed with the rear position during installation or later service.
How often should tires on a 2019 Lexus RC300 be inspected?
Tires on a 2019 Lexus RC300 should be inspected regularly, not just when replacement time arrives. Look at tread condition, sidewall damage, punctures, irregular wear, and air pressure, and pay extra attention if the coupe sees spirited driving, long highway trips, or extended periods of parking between uses.
Frequent checks are especially useful on cars with staggered fitment because front and rear tires can wear differently and cannot always be rotated in the same way as a square setup. Keeping an eye on wear patterns can also help reveal alignment issues, suspension wear, or pressure problems before they become more expensive to correct.
