The 2021 Lexus RC300 sits in the modern sport coupe space, blending Lexus refinement with a lower, more performance-minded stance than a typical luxury sedan. For many owners, the tire decision centers less on vintage-style presentation and more on confirming whether the car uses the 18-inch setup or the staggered 19-inch arrangement. This RC300 uses radial tire fitments in 235/45R18, 235/40R19, and 265/35R19 depending on drivetrain position and configuration. Available choices focus on blackwall performance-oriented series from BFGoodrich and Nitto. The key is matching the exact sub-model and wheel layout before comparing tire series, load capacity, and rim-width compatibility.
Which Tire Size Is Right for The 2021 Lexus RC300
The 2021 Lexus RC300 uses three primary tire sizes, and the correct choice depends on the exact sub-model and wheel position. Some versions use a single 18-inch radial size, while others use a staggered 19-inch setup with different front and rear sizes. Before choosing a tire, confirm whether the car is AWD, RWD, or F Sport and verify whether you are replacing front tires, rear tires, or all four.
Fit(s): (AWD), (AWD) Front, (RWD) Front, F Sport (AWD), and F Sport (RWD) Front
Construction: Radial|Rim: 19 in
235/40R19 is a metric radial size in which 235 identifies nominal section width in millimeters, 40 is the aspect ratio, R denotes radial construction, and 19 is the wheel diameter in inches. On the 2021 Lexus RC300, this size is used on 19-inch applications and commonly appears on front positions in staggered setups as well as certain AWD and F Sport configurations. Available choices include BFGoodrich blackwall tires in the g-Force Phenom T/A series. This size is the one to evaluate when the car already wears 19-inch front wheels and the goal is to preserve the intended low-profile sport-coupe look.
235/45R18 is a metric radial size with a 235-millimeter nominal section width, a 45-series profile, radial construction, and an 18-inch rim diameter. On the 2021 Lexus RC300, it serves the 18-inch fitment and is also the full-size setup for the RWD configuration that uses one tire size at all four corners. BFGoodrich offers this size in several blackwall g-Force series, including Comp 2 AS, Sport Comp 2, and Phenom T/A. This is the size to consider when the car has 18-inch wheels and the choice comes down to tire series, load specification, and intended street use.
Fit(s): (AWD) Rear, (RWD) Rear, and F Sport (RWD) Rear
Construction: Radial|Rim: 19 in
265/35R19 is a wider metric radial size in which 265 indicates nominal section width in millimeters, 35 is the aspect ratio, R marks radial construction, and 19 refers to the rim diameter in inches. On the 2021 Lexus RC300, this size appears on rear positions in staggered 19-inch arrangements rather than as a universal fitment for every configuration. Product choices include blackwall performance tires from BFGoodrich and Nitto across g-Force and NT555 G2 series. This size matters most when replacing rear tires on a staggered setup and keeping the car's front-to-rear balance consistent.
Tire fitment for the 2021 Lexus RC300 varies by drivetrain, trim, and in some cases by wheel position. Checking the exact sub-model matters because some versions use one tire size on all four corners, while others use a staggered front-and-rear combination on 19-inch wheels.
1
2021 Lexus RC300 (AWD)
The 2021 Lexus RC300 (AWD) appears with both 235/40R19 and 235/45R18 radial fitments, so wheel diameter should be confirmed before tire selection begins. Once the existing setup is verified, the choice becomes a matter of matching the installed wheels and comparing available blackwall performance tire options.
The 2021 Lexus RC300 (AWD) Front uses the 235/40R19 radial size as part of a 19-inch front application. Tire selection here should stay focused on maintaining the correct front size while comparing product details such as tire series and approved rim-width range.
The 2021 Lexus RC300 (AWD) Rear uses the 265/35R19 radial size for the rear position in a staggered setup. That makes rear tire selection dependent on preserving the proper rear size rather than matching the front, with attention paid to wheel compatibility and the chosen tire series.
The 2021 Lexus RC300 (RWD) uses the 235/45R18 radial size when equipped with the 18-inch arrangement. This setup simplifies replacement because the same size is used across the car, making the main decision tire series, load specification, and compatibility with the existing wheels.
The 2021 Lexus RC300 (RWD) Front uses 235/40R19 in the staggered 19-inch configuration. Front replacement should keep that size in place and then compare among available blackwall performance options that suit the car's wheel width and intended road use.
The 2021 Lexus RC300 (RWD) Rear uses 265/35R19 as the rear tire size in the staggered 19-inch setup. Rear tire choice should account for the wider section width and confirm that the existing wheel matches the tire's intended application before comparing brands or series.
The 2021 Lexus RC300 F Sport (AWD) uses the 235/40R19 radial size. With one primary size tied to this sub-model, the focus shifts from fitment uncertainty to selecting the right blackwall performance tire within the correct 19-inch specification.
The 2021 Lexus RC300 F Sport (RWD) Front uses 235/40R19 on the front axle of a staggered arrangement. Keeping the correct front size is important, then the buyer can compare tire series and rim-width suitability for the specific wheel already on the car.
The 2021 Lexus RC300 F Sport (RWD) Rear uses 265/35R19 at the rear. Because this is part of a staggered setup, tire replacement should preserve the rear-specific size and check wheel compatibility before selecting between the available blackwall performance series.
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 RC300 Tires for Sale
Available 2021 Lexus RC300 tire choices center on radial blackwall performance tires from BFGoodrich and Nitto. Depending on size, the product grid lets you compare g-Force series options, NT555 G2 availability on the 265/35R19 rear size, load specifications, and rim-width compatibility.
Owners of a 2021 Lexus RC300 usually need to confirm the exact size, wheel diameter, and whether the car uses a square or staggered setup. These FAQs focus on fitment, product selection, wheel compatibility, and the checks worth making before regular road use.
Tire Size & Fitment
What tire size fits a 2021 Lexus RC300?
The 2021 Lexus RC300 uses 235/45R18, 235/40R19, and 265/35R19 depending on drivetrain, trim, and wheel position. The 18-inch setup uses 235/45R18, while 19-inch staggered setups use 235/40R19 in front and 265/35R19 in the rear.
The practical step is to confirm the actual wheel package on the car before ordering tires. An RC300 may have different fitments between AWD, RWD, and F Sport versions, and staggered setups require front and rear tires to be selected separately rather than assuming one size fits every corner.
What size rim does a 2021 Lexus RC300 use?
The 2021 Lexus RC300 uses both 18-inch and 19-inch rim diameters. The 235/45R18 tire fits an 18-inch wheel, while the 235/40R19 and 265/35R19 sizes are built for 19-inch wheels.
Rim diameter should be verified first because it determines which tire size family even belongs on the car. Once that is confirmed, check wheel width as well, especially on 19-inch applications, since front and rear tires in a staggered setup may not share the same width requirements.
Why does the 2021 Lexus RC300 have more than one tire size?
More than one tire size applies to the 2021 Lexus RC300 because the model uses different wheel packages and, in some configurations, a staggered layout. That means one version may use a single 18-inch size, while another uses separate 19-inch front and rear sizes.
That difference matters because tire selection starts with the exact sub-model and the wheel position being replaced. A square setup can use one size at all four corners, but a staggered RC300 needs the correct front-to-rear pairing preserved so the car keeps its intended fitment balance.
Choosing the Right Tire
What should I consider when choosing a 2021 Lexus RC300 tire?
Start with the correct size for the exact RC300 configuration, then compare radial tire details that affect compatibility and use. Wheel diameter, wheel width, load capacity, tire series, and whether the car uses the same size all around or a staggered front-and-rear setup are the main factors.
After the fitment basics are settled, the decision becomes more specific to how the car is driven. A daily-use street coupe may call for a different series than a more aggressively driven car, but either way the tire should match the installed wheels and preserve the intended size at that position.
What sidewall styles are available for 2021 Lexus RC300 tires?
The available 2021 Lexus RC300 tire options here use a blackwall sidewall style across all three primary sizes. That gives the RC300 a clean modern appearance that suits the coupe's contemporary sport-luxury character without introducing a vintage or restoration-oriented visual treatment.
Since sidewall appearance is consistent, the more meaningful product differences are in tire series, brand selection on certain sizes, load specification, and rim-width compatibility. For most RC300 owners, the visual choice is straightforward, so confirming the right size and wheel package has a bigger impact than sidewall styling.
What brands offer tires for the 2021 Lexus RC300?
BFGoodrich offers tires for all three primary 2021 Lexus RC300 sizes, and Nitto appears in the 265/35R19 rear size. Within the BFGoodrich lineup, the available series include g-Force Comp 2 AS, g-Force Sport Comp 2, and g-Force Phenom T/A.
Brand choice should come after the fitment is narrowed to the correct size and wheel position. On a staggered RC300, the front and rear may not have the same brand options, so owners replacing a pair of tires should compare what is available for that exact axle rather than assume matching choices exist.
Fitment, Maintenance & Road Use
Can modifications affect tire fitment on a 2021 Lexus RC300?
Yes. A 2021 Lexus RC300 with aftermarket wheels, altered wheel widths, changed offsets, suspension lowering, or other chassis modifications may need a closer fitment review even when using one of the standard tire sizes. Changes like those can affect clearance at the fender, suspension, and steering components.
The safest approach is to verify the actual wheel diameter and width already on the car, then inspect how much room exists around the tire at full steering lock and normal ride height. That matters especially on 19-inch staggered setups, where front and rear fitment requirements are not the same.
What should I inspect before driving a 2021 Lexus RC300 on new tires?
Before regular road use, inspect tire pressure, wheel condition, valve stems, lug torque, and visible clearance around the tire. It is also worth checking for uneven wear patterns on the old tires, since those can point to alignment or suspension issues that should be addressed before putting miles on a new set.
A short initial drive followed by a recheck is a practical habit, especially if more than one size is involved. On a staggered RC300, confirm that the correct front and rear tires were mounted in the proper positions and that nothing rubs during turning, braking, or full suspension movement.
How often should tires on a 2021 Lexus RC300 be inspected?
Tires on a 2021 Lexus RC300 should be inspected regularly for pressure loss, uneven wear, cuts, bulges, and tread condition, with additional attention before longer drives. Even on a newer performance-oriented coupe, tire issues often show up first as edge wear, vibration, or changes in steering response.
Routine checks matter even more if the car is driven infrequently or stored for stretches at a time. A quick inspection of tread, sidewalls, and inflation can catch age-related deterioration or slow air loss early, and that helps protect both the tire investment and the RC300's road manners.
