2018 Acura NSX Wheel Interchange

2018 Acura NSX Wheel Fitment, Bolt Pattern, and Offset Guide

You are looking at wheel fitment for a 2018 Acura NSX on wheelinterchange.com. Think of this page as a practical checklist plus a clear mental model for comparing stock specs to potential swaps using the on-page calculator.

1. Misconception

Any 5x120 wheel with close offset will fit a 2018 NSX if the tire size matches.

2. Why it seems true

On paper, bolt pattern and tire size look like the big gates. If those line up and the diameter looks right in photos, it feels like the rest is minor. Many online listings highlight only bolt pattern and overall diameter, so it is easy to assume the rest is small details.

3. What is true

Fitment on the NSX is precise. Bolt pattern is only the start. Center bore, offset, backspacing, caliper clearance, and actual tire diameter all matter together. The 2018 NSX also commonly runs a staggered setup from the factory. The values below reflect a known OEM configuration for this model year. Other trims or the rear axle may differ. If you are planning a full set, confirm both axles against OEM sources and the calculator on this page.

Rule of thumb: the NSX hub is 64.1 mm. A wheel with a larger center bore can work with hub-centric rings. A wheel with a smaller bore will not seat. If your setup differs from the table, use the calculator to compare your custom wheel and tire sizes against the known OEM baseline above.

4. Implications

• Offset and backspacing: Too high pushes the wheel inward and can hit the suspension or calipers. Too low pushes it outward and can contact fenders or change steering feel.
• Centering: The NSX expects a 64.1 mm hub-centric fit. Rings can center aftermarket wheels with larger bores, which helps reduce vibration.
• Brake clearance: The NSX has large calipers. Spoke shape matters. Two wheels with the same numbers can clear very differently.
• Tire diameter: The calculator updates tire diameter when you change rim size. Use that to keep overall diameter close to stock, which helps with ABS, traction control, and speedometer accuracy.
• Staggered possibility: If your rear setup differs from front, compare axle by axle. The known values here may represent the front axle, and rear sizes may vary by trim or package.
• Lug hardware: Thread is M14x1.5. Lug seat type and torque spec can vary. Confirm with the owner’s manual or OEM service info before you torque anything.

5. Quick tests

Use these checks to move from guesswork to confidence.

• Calculator comparison: In the tool on this page, set “Installed on” to 2018 Acura NSX. Use the table values above as your baseline. Enter the “Wheels from” donor or your custom wheel and tire sizes. Watch the offset, backspacing, and tire diameter changes, and note inner and outer clearance changes.
• Diameter guardrails: Keep overall tire diameter within a small percent of stock for stable handling and electronics. The calculator shows this live, so small changes are easy to track.
• Center bore sanity check: If the wheel bore is larger than 64.1 mm, plan for hub-centric rings sized to 64.1 mm. If it is smaller, it will not seat on the hub.
• Brake template approach: If available from the wheel maker, compare their caliper clearance template to the NSX brakes. Without a template, test fit and confirm at least a few millimeters of spoke-to-caliper clearance with the wheel torqued.
• Lock-to-lock and bump test: After a careful test fit, turn the steering from lock to lock and compress the suspension. Look and listen for any contact at liners or arms.
• Hardware check: Match M14x1.5 lug hardware and seat style to the wheel. Torque in a star pattern and recheck after a short shakedown drive.
• Unknown rear specs: If your rear axle differs and you do not have the exact OEM numbers, read the door jamb label or owner’s manual, then model the rear in the calculator before buying.

Helpful tools

• 1/2 inch torque wrench
• M14x1.5 lug nuts
• Hub-centric rings 64.1 mm
• Digital caliper for bore and spacer checks

Quick recap

The 2018 Acura NSX uses a 5x120 bolt pattern, 64.1 mm center bore, and M14x1.5 threads. A known OEM configuration is 19x8.5 ET55 with 6.42 in backspacing and a 245/35R19 tire. Other trims and the rear axle may differ. Use the on-page calculator to compare any donor wheel or custom size against these numbers, then test fit for caliper and fender clearance. This mental model keeps the process simple and safe without relying on guesses.