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Acura NSX NC1 (2017-2022) Wheel Fitment Guide
The second-generation Acura NSX (NC1) is a hybrid mid-engine supercar built in Marysville, Ohio — twin-turbo 3.5L V6, three electric motors, 9-speed dual-clutch, and Sport Hybrid SH-AWD across the entire run. Total worldwide production reached just 2,908 units, which makes the documented aftermarket fitment library narrower than mainstream platforms. This guide covers all 2017-2022 USDM configurations: the 2017-2021 standard NC1 (Interwoven Spoke standard, Y-Spoke Forged optional), the 2022 Type S with its unique widened-track forged 5-spoke, the shared 5×120 / 70.1mm hardware, the documented 20/21" aftermarket upsizes verified against named owner and vendor builds, Brembo and carbon-ceramic brake clearance, and the SH-AWD rolling-diameter considerations that apply when you change wheel and tire diameter.
About this guide: The fitment data below is compiled from Acura's accessory wheel installation documentation, owner-submitted builds, and enthusiast research across NSX Prime, the r/NSX community, and published NSX technical resources. We summarize what NC1 owners have reported running successfully so you have a researched starting point for your build.
Every FMB build goes through a sanity check and an engineering verification before forging. We cross-reference the configuration you're ordering against your trim and brake package and what's commonly documented on similar builds — and our manufacturing partner verifies the wheel itself (backspace, brake caliper clearance, structural spec) before production begins.
Fitment decisions involving ride height, tire choice, and suspension setup are yours and your installer's call. The NC1 community is small and tightly knit — use this guide as research, not as a substitute for a real fitment conversation.
The 2017-2022 NC1 shipped with three documented OEM wheel configurations. The 2017-2021 standard NC1 received the Interwoven Spoke as standard delivery with the Y-Spoke Forged available as a factory option; the 2022 Type S received a unique forged 5-spoke with a widened track. All NC1 configurations share the same platform hardware: 5×120 bolt pattern, 70.1mm center bore front and rear, M14×1.5 lug nuts on pressed-in studs, 60° conical seats, 125 lb-ft (170 N·m) torque, and direct TPMS sensors. The 2019 mid-cycle refresh changed the standard tire (not the standard wheel), so OEM wheel hardware is consistent across the run.
The standard delivery wheel on the 2017-2021 NC1. The Interwoven design uses a woven spoke pattern that visually masks weight while providing structural rigidity. Early 2017+ cars shipped on Continental ContiSportContact 5P run-flats; later production moved to the ContiSportContact 6 as part of the 2019 mid-cycle refresh focused on grip. Compatible with the standard iron Brembo brake setup. Owners commonly cite Interwoven weights of roughly 44.2 lbs front and 56.9 lbs rear with the factory Continental tires mounted.
Part NumbersFront 44700-T6N-A21 · Rear 42700-T6N-A01
TPMSDirect sensors — transfer required
Applies To2017-2021 NC1 (optional)
The optional upgrade wheel on the standard NC1 — Acura's track-recommended OEM choice. Identical dimensions and ET55 offset to the Interwoven, but forged aluminum, saving roughly 7 lbs per set (owners commonly cite ~43 lbs front / ~55.4 lbs rear vs 44.2 / 56.9 for the cast Interwoven). The open spoke pattern is frequently cited as offering better brake cooling, making it the preferred OEM wheel for owners doing HPDE or track use. Because dimensions and offset match the Interwoven exactly, the choice between the two comes down to weight savings and brake cooling versus appearance.
Type S Forged 5-Spoke 19/20"
Standard Delivery — 2022 Type S Only
Front Wheel19×8.5
Rear Wheel20×11
Front Tire245/35ZR19
Rear Tire305/30ZR20
Center Bore70.1mm
Bolt Pattern5×120
Fastener TypeLug Nuts (pressed-in studs)
Thread PitchM14×1.5
Torque Spec125 lb-ft
Seat Type60° Conical
ConstructionForged Aluminum (split 5-spoke)
OEM Tire BrandPirelli P Zero ("H0" spec) · Trofeo R optional
Track Width Increase+0.4" front / +0.8" rear vs standard NC1
Brake SystemBrembo iron 6-pot/4-pot · Lightweight Pkg: Brembo CCB
TPMSDirect sensors — transfer required
Applies To2022 NC1 Type S (limited — ~350 worldwide, ~300 US)
The exclusive wheel on the 2022 Type S — the final-year limited model that ended NC1 production. Forged split 5-spoke in Matte Shark Grey or Gloss Berlina Black. Acura does not publish a discrete ET for this wheel; its defining difference from the standard NC1 wheel is increased negative offset, widening the front track 0.4" and rear track 0.8". Combined with bespoke Pirelli P Zero "H0" rubber, Acura documents a roughly 6 percent lateral grip increase vs the standard NC1. Because of the different offset, Type S and standard NC1 wheels are not directly interchangeable — owners moving between them commonly verify offset and fender clearance before installation. Standard brakes are Brembo iron 6-piston front / 4-piston rear; the optional Lightweight Package adds Brembo carbon ceramic brakes (15" front / 14.2" rear) plus a documented curb-weight reduction.
Aftermarket Options
Aftermarket Wheel & Tire Configurations
With roughly 2,908 cars built worldwide, the NC1 has a tightly defined aftermarket ecosystem, and the documented activity clusters almost entirely on the 20" front / 21" rear upsize over the OEM 19/20" staggered diameter. The configurations below are organized under Staggered Setup — the NC1 is a mid-engine platform engineered around a staggered footprint, and no square aftermarket setup is documented with sources, so this guide does not include a square section. Each card commits to a single documented offset and tire spec tied to a named owner or vendor build. Because the documented library is thin, every card here is a single-source "Documented" entry — the source counts tell you exactly how much evidence sits behind each one.
⚠️Platform-specific fitment notes — NSX NC1
Lug nut and seat type.
The NC1 uses M14×1.5 lug nuts with 60° conical seats on pressed-in studs — different from the first-generation NA1/NA2 NSX (5×114.3, M12×1.5, 80 lb-ft) and different from European exotics that use ball-seat lug bolts. Aftermarket wheel hardware needs to match the conical seat, and many owners switch to extended or open-end M14×1.5 lug nuts to suit deeper aftermarket lug seats.
Direct TPMS sensors.
The NC1 uses direct pressure sensors inside each wheel. These must be transferred to aftermarket wheels or replaced with compatible sensors, then recalibrated. The OEM sensors are designed to be transferable across multiple wheel sets, which helps owners running separate summer and track wheels.
Type S wheel offset.
The 2022 Type S OEM wheel uses a more negative offset than the standard NC1 to widen track. Wheels are not directly cross-compatible between standard NC1 and Type S without offset verification, and aftermarket fitments calibrated for the standard NC1 will sit slightly inboard of the OEM Type S position. Type S owners chasing the factory wider-track stance should expect to target more aggressive offsets than the standard-NC1 numbers below.
Brake package clearance (iron Brembo vs carbon ceramic).
Standard NC1 cars run iron Brembo calipers; the 2022 Type S Lightweight Package adds Brembo carbon ceramic brakes (15" front / 14.2" rear). CCB-equipped cars use larger calipers than the standard iron setup, so aftermarket wheels chosen for CCB cars need inner-barrel and spoke clearance verified against the larger caliper. The smaller NC1 community means fewer plug-and-play references than mainstream CCB platforms, so confirming clearance with the wheel manufacturer is the standard approach.
SH-AWD rolling diameter on the 20/21" upsize.
The NC1 is Sport Hybrid SH-AWD, and the documented 20/21" upsizes run a 325/25R21 rear that increases rear rolling diameter relative to the OEM 305/30R20. Front-to-rear rolling diameter differences can stress AWD systems over time. The math should be checked against your owner manual before committing — we document tire dimensions on every card; verifying compatibility is your responsibility.
Limited aftermarket library.
With only ~2,908 cars built worldwide, NC1 aftermarket options are narrower than mainstream platforms — most NC1-specific offerings come from specialist tuners and forged-wheel manufacturers with platform-specific engineering, and the community has fewer plug-and-play references. Verifying your specific suspension state, ride height, and brake package against any chosen spec is the standard NC1 approach.
Staggered Setup
Stanceflush → poke
OEM
Aggressive
AWD onlyDaily
Front Wheels
20×9 ET47
Rear Wheels
21×12 ET45
Front Tires
255/30R20
Rear Tires
325/25R21
Sources
Documented
1 vendor
The mildest documented NC1 aftermarket upsize — a 20" front / 21" rear staggered set at the most conservative offsets in the documented range. A vendor technical fitment page documents this exact spec (20×9 ET47 / 21×12 ET45 on 255/30R20 + 325/25R21), built bespoke to the second-gen NSX with NSX-specific hub-centric bore and offset, and states it clears the factory Brembo calipers without issue at no required suspension change. Relative to the deep-set OEM ET55, the lower offsets and wider rims fill the arches while keeping inner clearance manageable. The 21" rear increases rear rolling diameter over the OEM 20" — check against your owner manual for SH-AWD tolerance before committing. Commonly paired tire options: Pirelli P Zero, Michelin Pilot Sport 4S.
Stanceflush → poke
OEM
Aggressive
AWD onlyDaily
Front Wheels
20×9 ET39
Rear Wheels
21×12 ET45
Front Tires
255/30R20
Rear Tires
325/25R21
Sources
Documented
1 vendor
Documented on a 2021 NC1 owner build via a vendor-hosted fitment gallery — running 20×9 ET39 / 21×12 ET45 with 255/30R20 + 325/25R21 on stock ride height, gallery-reported with no rubbing and no modifications. The front ET39 sits about 8mm more outboard than the milder 20/21 upsize while keeping the same ET45 rear, giving a slightly more filled front-arch stance without changing the rear. Michelin tires are documented on this build. As with all the 20/21 upsizes, the 21" rear increases rear rolling diameter over OEM — verify against your owner manual for SH-AWD tolerance. Commonly paired tire options: Michelin Pilot Sport 4S, Pirelli P Zero.
Stanceflush → poke
OEM
Aggressive
AWD onlyDaily
Front Wheels
20×9 ET47
Rear Wheels
21×12 ET38
Front Tires
255/30R20
Rear Tires
325/25R21
Sources
Documented
1 vendor
Documented on a 2022 Type S build via vendor-hosted fitment galleries — running 20×9 ET47 / 21×12 ET38 with 255/30R20 + 325/25R21, on Science of Speed lowering springs, gallery-reported with no rubbing and no spacers. The ET38 rear pulls the rear face a bit more outboard than the ET45-rear cards while the front ET47 stays conservative, giving a rear-biased stance. Because this is a Type S — which already runs a wider OEM track — these standard-NC1-calibrated offsets sit slightly inboard of the factory Type S position; standard-NC1 owners get the documented stance directly. Michelin Pilot Sport 4S is documented on this build. The 21" rear increases rear rolling diameter over OEM — verify against your owner manual for SH-AWD tolerance. Commonly paired tire options: Michelin Pilot Sport 4S, Pirelli P Zero.
Stanceflush → poke
OEM
Aggressive
AWD onlyShow
Front Wheels
20×9 ET31
Rear Wheels
21×12 ET27
Front Tires
255/30R20
Rear Tires
325/25R21
Sources
Documented
1 community
The most aggressive documented NC1 fitment — a 2017 NC1 owner build running this 20×9 / 21×12 footprint with 255/30R20 + 325/25R21 on air suspension, reported with no rubbing or scrubbing and no trimming, and an owner stance label of "HellaFlush." The build was originally documented at 20×9 ET41 / 21×12 ET37 with 10mm front and rear spacers; it's spec'd here at the effective ET31 / ET27 face position, since FMB forges the offset directly rather than running wheel-plus-spacer. This effective offset is meaningfully more outboard than the other documented setups, and it was achieved on adjustable air suspension — replicating it on a static setup would call for careful fender and full-lock clearance verification first. The 21" rear increases rear rolling diameter over OEM — verify against your owner manual for SH-AWD tolerance. Commonly paired tire options: Michelin Pilot Sport 4S, Pirelli P Zero.
Our Process
What happens when you build with FMB
The configurations above are a starting point — not a final spec. When you start your NSX NC1 build, here's what actually happens before anything is forged:
FMB sanity check.
We cross-reference the configuration you're ordering against your trim (standard NC1 vs 2022 Type S) and brake package (standard iron Brembo vs carbon ceramic), and compare it to what's commonly documented on similar builds. The NC1 community is small and tightly tracked, so unusual configurations get flagged early — if the setup you want falls outside what we've seen work on this platform, we'll flag it before you commit.
Manufacturer engineering verification.
Our manufacturing partner verifies the wheel itself — backspace, brake caliper clearance for your brake package, and structural spec — before production begins.
Design render approval.
You see the final design and confirmed specs before any aluminum is touched.
Ride height, tire choice, alignment, and suspension setup are variables your installer handles on the car — not things we verify from our end. That's why we ask for the vehicle details we do on the build form: they're the inputs we can actually check against.
What wheels come standard on the 2017-2022 Acura NSX NC1?
The 2017-2021 standard NC1 shipped with the Interwoven Spoke 19/20" wheel as standard delivery — 19×8.5 ET55 front with 245/35ZR19 tires and 20×11 ET55 rear with 305/30ZR20 tires. The Y-Spoke Forged 19/20" was available as a factory option with identical dimensions but forged construction (saving roughly 7 lbs per set) and improved brake cooling, frequently cited as Acura's track-recommended OEM choice. The 2022 Type S — the final-year limited model — received an exclusive forged 5-spoke at the same 19/20" diameter and 8.5" / 11" widths, but with more negative offset that widened the front track 0.4" and rear track 0.8" vs the standard NC1. All NC1 wheels share the same hardware: 5×120 bolt pattern, 70.1mm center bore, M14×1.5 lug nuts on pressed-in studs, 60° conical seats, 125 lb-ft (170 N·m) torque.
What are the base hardware specs for the NC1 NSX?
Bolt pattern: 5×120 (different from the first-generation NA1/NA2 NSX, which used 5×114.3). Center bore: 70.1mm front and rear (unlike the first-gen, which had split front 70.1mm / rear 64.1mm bores). Fastener type: lug nuts on pressed-in studs (not lug bolts). Thread pitch: M14×1.5. Seat type: 60° conical. Torque spec: 125 lb-ft (170 N·m), significantly higher than the first-gen's 80 lb-ft. TPMS: direct pressure sensors inside each wheel that must be transferred to aftermarket wheels or replaced. All specifications are identical across the 2017-2022 NC1 run, including the 2022 Type S.
Are standard NC1 wheels interchangeable with the 2022 Type S wheels?
Not directly. The 2022 Type S OEM wheel uses a more negative offset than the standard NC1 Interwoven and Y-Spoke wheels — calibrated to widen the front track 0.4" and rear track 0.8". They share identical 19/20" diameter, 8.5" / 11" widths, 5×120 bolt pattern, and 70.1mm center bore, but the offset difference means a standard NC1 wheel on a Type S sits further inboard than the factory Type S wheel, while a Type S wheel on a standard NC1 sits further outboard. Owners moving between standard NC1 and Type S wheels commonly verify offset, tire diameter, and fender clearance before installation. The OEM tires also differ — standard NC1 ran Continental ContiSportContact 5P or 6, while Type S ran bespoke Pirelli P Zero "H0" rubber, with Pirelli Trofeo R available as a dealer option on both.
What's the difference between the first-generation NSX and the second-generation NC1 for wheel fitment?
They are completely different platforms with no wheel crossover. The first-generation NSX (1991-2005, NA1/NA2) used a 5×114.3 bolt pattern with M12×1.5 lug nuts, 80 lb-ft torque, and split front 70.1mm / rear 64.1mm center bores — so first-gen wheels are not interchangeable with the second-gen even when dimensions look similar. The NC1 uses 5×120 with M14×1.5 lug nuts, 125 lb-ft (170 N·m) torque, and a uniform 70.1mm center bore front and rear. The two generations also use different OEM tire sizes and diameters — the first-gen ranged from 15/16" through 17/17" depending on year, while the NC1 is exclusively 19/20" (or 20/21" with documented aftermarket upsizes). Owners cross-shopping wheels between the two should verify all hardware specs separately for each platform.
What lug nut seat type does the NC1 NSX use?
The NC1 uses 60° conical seat lug nuts on pressed-in studs — the standard Honda/Acura configuration. Most aftermarket wheels designed for Japanese performance applications use 60° conical seats, so seat matching is usually straightforward, but it should still be confirmed because some wheels designed for European platforms specify ball seat or other non-conical types. Running mismatched seats causes point contact instead of full surface engagement, which prevents proper seating and can let lug nuts loosen under load. Before buying any aftermarket wheel, confirm the wheel's seat type and use matching M14×1.5 conical seat lug nuts — many owners switch to aftermarket extended or open-end lug nuts to suit deeper aftermarket lug seats.
Does the NC1 NSX have TPMS sensors that need to be transferred?
Yes. The NC1 uses a direct TPMS system with physical pressure sensors inside each wheel — common on hybrid and EV-adjacent platforms. When swapping to aftermarket wheels, these sensors must be transferred from the OEM wheels or replaced with compatible sensors. Transfer cost is typically $50-$150 per wheel depending on whether programming is included, and owners commonly recalibrate via the dashboard menu afterward. The OEM sensors are designed to be transferable across multiple wheel sets, which is convenient for owners running separate summer and track wheels.
What aftermarket wheel sizes are commonly documented on the NC1 NSX at stock ride height?
Documented NC1 aftermarket activity clusters almost entirely on the 20" front / 21" rear upsize over the OEM 19/20", paired with 255/30R20 front and 325/25R21 rear tires. Four distinct face positions are documented in this 20×9 / 21×12 family: a milder 20×9 ET47 / 21×12 ET45 (vendor-documented as clearing the factory Brembo calipers), a 20×9 ET39 / 21×12 ET45 on a 2021 stock-height build with no rubbing reported, a rear-biased 20×9 ET47 / 21×12 ET38 on a 2022 Type S with lowering springs, and an aggressive 20×9 ET31 / 21×12 ET27 effective face position on an air-suspension build (originally documented with 10mm spacers). OEM-diameter (19/20") aftermarket setups are not well documented in the NC1 community — the upsize is where the activity is. Because the 21" rear increases rolling diameter over the OEM 20", SH-AWD owners should check the front-to-rear pairing against their owner manual before committing.
What's the difference between flush and aggressive fitment on the NC1 NSX?
Flush fitment means the wheel face sits close to filling the arch without poking past the fender line — on the NC1 that's the milder end of the documented 20/21" upsizes, with offsets in the ET45-ET47 range. Aggressive fitment pushes the wheel face further outboard with lower offsets (down to an effective ET31 / ET27 on the most aggressive documented build), producing a stance that fills or slightly fills the arch and typically pairs with lowered or air suspension. Because the NC1 community is small, there are fewer plug-and-play references than mainstream platforms, so more aggressive setups carry more verification responsibility around fender and full-lock clearance. The stance dots on each aftermarket card map this spectrum — 2 dots is the mildest documented setup, 5 dots is the most aggressive documented on the platform.
Can I run a square setup on the NC1 NSX?
In practice, no — and that's why this guide has no square section. The NC1 is a mid-engine supercar engineered around a staggered footprint (narrower front, much wider rear), and the documented aftermarket community runs staggered setups almost exclusively. A square setup is mechanically possible, but it isn't a path NC1 owners have documented with sources, and forcing the rear into a narrower square width would give up the rear contact patch the chassis is built around. If you want tire-rotation flexibility, the more practical approach on this platform is a documented staggered spec with a tire plan rather than a square conversion. Every documented NC1 aftermarket configuration in this guide is staggered.
Does Sport Hybrid SH-AWD affect wheel and tire choice on the NC1?
It's the main reason to pay attention to tire diameter on the upsizes. Every NC1 is Sport Hybrid SH-AWD — there is no rear-wheel-drive NC1 — and the documented 20/21" aftermarket upsizes run a 325/25R21 rear that increases rear rolling diameter relative to the OEM 305/30R20. Front-to-rear rolling diameter differences can stress AWD systems over time, so the front-and-rear tire pairing should be checked against your owner manual before committing. FMB documents tire dimensions on every card; confirming the pairing falls within the platform's AWD tolerance is the buyer's responsibility. Wheel hardware itself (5×120, 70.1mm bore, conical seats) is identical regardless of which setup you run.
Do the optional carbon ceramic brakes affect aftermarket wheel selection on the NC1 NSX?
The standard NC1 brake configuration uses iron rotors with Brembo monoblock calipers, which clear both the OEM 19/20" wheels and the documented 20/21" aftermarket upsizes. The 2022 Type S Lightweight Package added Brembo carbon ceramic brakes (CCB) at 15" front / 14.2" rear rotor diameters with larger calipers — these are documented as cleared by the factory Type S wheels. Because CCB cars use larger calipers than the standard iron setup, aftermarket wheels for CCB cars need inner-barrel and spoke clearance verified against the larger caliper. Owners typically confirm CCB clearance directly with the wheel manufacturer — the smaller NC1 community means fewer reference builds than mainstream CCB platforms.
What is the correct lug nut torque for the NC1 NSX?
125 lb-ft (170 N·m) for the OEM lug nuts, as specified in Acura's accessory wheel installation document for the 2017+ NSX. This applies to both OEM and aftermarket wheels using the standard M14×1.5 lug nut hardware. Note that this is significantly higher than the first-generation NSX's 80 lb-ft spec, so owners cross-shopping hardware between generations should not assume the same torque values apply. Owners commonly retorque after the first 50-100 miles when installing new wheels to confirm proper seating. If running a stud conversion with aftermarket components, follow the torque specification provided by the stud manufacturer.
What about spacers on the NC1 NSX?
Spacers are commonly used on the NC1 to fine-tune offset and stance, and several documented community builds reach their final face position with spacers (the most aggressive documented setup in this guide ran 10mm front and rear spacers over a higher-offset wheel). For custom forged aftermarket wheels, FMB delivers at the effective offset directly — the cards above show as-forged offsets, so a spec like the aggressive 20×9 ET31 / 21×12 ET27 ships at those offsets without needing a spacer, rather than running a higher-offset wheel plus a 10mm spacer to land in the same place. If you do run spacers on the NC1, use hardware rated for the M14×1.5 pressed-in-stud setup and confirm adequate stud thread engagement.
What are the winter wheel options for the NC1 NSX?
The NC1 is a summer-focused supercar with no factory winter wheel program, so winter setups are uncommon and owner-driven rather than standardized. Owners who do run winter tires typically keep a dedicated second OEM-diameter wheel set (19/20") with the TPMS sensors transferred or duplicated, mounted with winter-rated rubber, rather than running the wider aftermarket upsizes in cold conditions. Because the documented NC1 community is small, there isn't a broadly established aftermarket winter spec the way there is on mainstream platforms — the practical approach is a conservative OEM-diameter wheel paired with a winter tire your installer confirms for the platform.
How does FMB verify fitment before forging my wheels?
Every FMB order goes through a sanity check and an engineering verification before any aluminum is forged. First, our team cross-references the configuration you're ordering against your trim (standard NC1 vs 2022 Type S) and brake package (standard iron Brembo vs carbon ceramic) and flags anything that falls outside what's commonly documented on similar NC1 builds — the NC1 community is small and tightly tracked, so unusual configurations get flagged early. Second, our manufacturing partner verifies the wheel itself — backspace, brake caliper clearance, and structural spec — before production begins. You then approve the final design render and confirmed specs before any work starts. Ride height, tire choice, and alignment are things your installer handles on the car; the fitment guides on this site are researched starting points for making those decisions with your installer.
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