2021 Acura NSX Tires

The 2021 Acura NSX uses a staggered tire setup with two different radial sizes: 245/35R19 at the front and 305/30R20 at the rear. These are not alternate sizes for the same wheel position. They are part of the car's front-to-rear fitment arrangement and correspond to different wheel diameters.

That means the first step is identifying whether you are replacing a front or rear tire. Matching the correct position matters for wheel diameter, tire width, and overall balance, especially on a performance car like the NSX. If the car has aftermarket wheels or prior changes, confirm the actual wheel size mounted at each end before selecting replacement tires.

A 2021 Acura NSX uses two rim diameters as part of its staggered setup. The front tire size, 245/35R19, mounts on a 19-inch wheel, while the rear tire size, 305/30R20, mounts on a 20-inch wheel. The difference in rim diameter is built into the tire sizing and should be treated as position-specific.

Rim diameter is the most important fitment checkpoint before replacement, because a 19-inch front tire and a 20-inch rear tire are not interchangeable. Wheel width also deserves attention when comparing products, particularly on the front where some tires include stated rim-width ranges. Checking the wheel itself is especially important if the NSX no longer wears its original wheel package.

The 2021 Acura NSX uses more than one tire size because it has a staggered fitment, with one size at the front and a wider, different-diameter size at the rear. The front uses 245/35R19 and the rear uses 305/30R20. This is a normal layout for performance-focused cars that separate front and rear tire duties.

For the owner, the practical takeaway is simple: tire selection starts with wheel position, not just year, make, and model. Replacing a single tire without confirming front versus rear can lead to an immediate mismatch in size and wheel diameter. When replacing pairs or a full set, keep the front and rear fitment relationship intact unless the entire wheel-and-tire package has been intentionally changed.

Start with the correct position-specific size, since the 2021 Acura NSX uses 245/35R19 in front and 305/30R20 in the rear. From there, compare construction, wheel compatibility, sidewall style, brand, and tire series. All of the available options are radial, but they differ in presentation and product details.

A careful choice should also reflect how the car is used and how you want it to look. Some owners may simply want a clean blackwall performance tire, while others may be drawn to raised white letter or redline styling at the rear. Keeping front and rear selections appropriate to their wheel positions helps maintain a balanced, intentional setup.

Sidewall style varies by size on the 2021 Acura NSX. Blackwall options are available in both 245/35R19 and 305/30R20, while the 305/30R20 rear size also appears in raised white letter and redline versions. That gives the rear fitment the broadest appearance range among the available choices.

The practical decision is whether appearance should stay understated or become part of the car's visual statement. A blackwall keeps the presentation modern and restrained, while raised white letter or redline sidewalls create a more customized look. Any style change still needs to stay within the correct rear size and wheel-diameter requirement for the NSX.

Tires for the 2021 Acura NSX are available from BFGoodrich, Nitto, and Pro-Trac across the covered front and rear sizes. BFGoodrich appears in the 245/35R19 front size, Nitto is available in both front and rear fitments, and Pro-Trac is represented in the 305/30R20 rear size.

Brand is only one part of the decision, so it helps to compare the tire series and sidewall treatment within the correct wheel position. The front size includes g-Force and NT555 G2 choices, while the rear includes NT555 G2 and Street Pro III options. Matching the correct size and wheel diameter still matters more than choosing by brand name alone.

A period-style approach on a 2021 Acura NSX usually starts with preserving the correct staggered radial fitment: 245/35R19 in front and 305/30R20 in the rear. Since this is a modern performance car rather than a vintage restoration project, the most authentic visual direction will usually come from staying with the proper size and a clean sidewall treatment.

Blackwall tires tend to keep the presentation closest to the restrained, contemporary look many NSX owners prefer. Rear-only appearance alternatives such as raised white letter or redline can shift the visual character toward a more customized style. If originality is especially important, compare any cosmetic change against marque-specific reference material and the car's existing presentation.

Construction is less of an appearance dividing line on a 2021 Acura NSX because the covered fitment is already radial throughout. The bigger visual differences come from sidewall treatment and tire series rather than from choosing between bias-ply and radial construction, as might happen on an older collector vehicle.

That shifts the appearance decision toward details such as blackwall versus raised white letter or redline on the rear size. Owners aiming for a cleaner, more restrained look will usually focus on blackwall choices, while customized builds may lean into more visible sidewall styling. Any appearance decision should still preserve the correct front and rear sizes and wheel diameters.

Yes, modifications can affect tire fitment on a 2021 Acura NSX even when the replacement tire size itself is correct. Aftermarket wheels, suspension changes, altered ride height, or body modifications can change clearance at the fender, suspension, and steering components. On a staggered car, those changes can affect the front and rear differently.

That is why the actual wheel setup on the car should be verified before ordering replacements. Confirm the wheel diameter at each end, and pay attention to wheel width where product specifications include it. A modified NSX may still use the same nominal tire size, but clearance and wheel-compatibility checks become more important than they would on an unaltered example.

Before driving a 2021 Acura NSX on new tires, inspect the wheels for correct diameter, check that the front and rear tires are mounted in their proper positions, and confirm there is no obvious interference at full steering lock or through suspension travel. Basic condition checks should also include valve stems, air pressure, and wheel hardware.

A short, careful road check is worthwhile after installation, especially on a high-performance car with different front and rear sizes. Watch for vibration, rubbing, uneven feel, or air loss during the first miles. It also helps to recheck pressure after the tires have settled in, since proper inflation plays a major role in both tire wear and vehicle response.

Tires on a 2021 Acura NSX should be inspected regularly, not just when tread looks worn. A quick visual check before driving and a more careful inspection at routine intervals can help catch uneven wear, cuts, punctures, bulges, or sidewall damage early. High-performance fitments deserve close attention because they work with low profiles and position-specific sizing.

Cars that spend long periods parked should also have tire condition and pressure checked before returning to the road. Even limited-use vehicles can develop issues from age, underinflation, or storage conditions. Looking over both the 19-inch front and 20-inch rear tires separately helps ensure that wear or damage on one axle does not go unnoticed simply because the car is driven infrequently.