Nissan Micra / Alfa Romeo MiTo Forged Wheels
Custom Finish Machined Face · 4-Lug
1977 Nissan Fairlady Z S31 Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Nissan Fairlady Z S31 wheels? This page gives the 1977 Nissan Fairlady Z S31 bolt pattern (4x114.3), centre bore, factory rim size and the offset range for aftermarket and forged Nissan Fairlady Z S31 rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Nissan Fairlady Z S31 (1977): 4x114.3 bolt pattern, 73.1mm center bore. Factory wheels: 14x5.5J at ET15 offset, front and rear. Reference fitment ranges.
Bolt Pattern4x114.3
Wheel Bolt/NutM12x1.25 Nut
Center Bore73.1mm
Wheel Load Rating700–850 kg/wheel (Performance / Sports Car segment reference)
Year1977
CategorySports Coupe
✓ Verified by ANKUSI's Engineering Team — IATF 16949 & ISO 9001 certified forged wheel manufacturer, TÜV/SFI/VIA compliant. See our factory & certifications →
Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Factory (OE) | 14x5.5J F/R |
| Flush Fitment | F 15x7.5J ET0 / R 15x8.0J ET-5 |
| Maximum Aggressive | F 15x8.5J ET-10 / R 15x9.0J ET-15 |
How to Read Wheel Offset & Measurements
Use these two references before ordering: the left diagram shows where each spec (PCD, center bore, offset, width and diameter) is measured on the wheel; the right diagram shows how positive, zero and negative offset shift the wheel face relative to the hub centerline.
ANKUSI Engineering Expert Advice
The Nissan Fairlady Z S31's chassis tuning assumes a certain amount of rotational mass at each corner. Forging lets ANKUSI cut that mass while matching the factory strength rating, which sharpens turn-in and reduces the energy the brakes have to absorb — a real gain on a coupe platform, not just a styling change.
The Nissan Fairlady Z S31 runs a 4x114.3 bolt pattern, 73.1mm center bore, and a 14x5.5J, front and rear, wheel from the factory. Our Flush Fitment reference is F 15x7.5J ET0 / R 15x8.0J ET-5, which tucks the tire under the fender lip on a stock-height Nissan Fairlady Z S31. Our Maximum Aggressive reference is F 15x8.5J ET-10 / R 15x9.0J ET-15 — beyond that offset, expect rubbing against the inner fender liner under compression without further trimming.
Nissan Fairlady Z S31 OE Wheel Specs
The 1977 Nissan Fairlady Z S31 (Sports Coupe) uses a 4x114.3 bolt pattern with a 73.1mm center bore. Factory wheels are 14x5.5J F/R.
Why the factory spec works for most owners:
- Keeps unsprung weight low to preserve the factory handling balance
- Matches the wider, performance-oriented tire sizing typical of this platform
- Maintains clearance for the factory brake package and suspension geometry
- Balances grip with ride comfort for daily and spirited driving
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the Nissan Fairlady Z S31 (1977) we drill the 4x114.3 pattern and cut the centre bore to 73.1mm on our own CNC line, so the wheel hub-centres on the car with no spacer rings, in whatever diameter, width and offset you specify.
Converting these ET figures to backspacing? Use the wheel offset and backspacing calculator.
The figures on this page are part of our open wheel fitment dataset — 6,436 vehicles, free to download, CC BY 4.0.
Flush Fitment
For a flush look, F 15x7.5J ET0 / R 15x8.0J ET-5 is a commonly used starting point — clearance must be verified on a stock or mildly lowered Nissan Fairlady Z S31.
Maximum Aggressive Fitment
F 15x8.5J ET-10 / R 15x9.0J ET-15 is a more aggressive reference setup. Beyond this, expect rubbing under compression without fender rolling or camber correction.
5-Tier Configuration Options
A Factory-Style F 14x5.5J ET15 / R 14x5.5J ET15
Recommended setup: F 14x5.5J ET15 / R 14x5.5J ET15 | Economy impact: Negligible | Best for: Daily commuting, family use
Appearance: 7/10 | Comfort: 9.5/10 | Install difficulty: ★☆☆☆☆
Estimated cost: $450-800 (wheels + tires + install)
B Comfortable Upgrade F 15x6.5J ET8 / R 15x7.0J ET5
Recommended setup: F 15x6.5J ET8 / R 15x7.0J ET5 | Economy impact: -2 to -4% | Best for: Daily / street
Appearance: 8/10 | Comfort: 9/10 | Install difficulty: ★☆☆☆☆
Estimated cost: $1,950-2,550 (wheels + tires + install)
C Balanced / Flush Fit F 15x7.5J ET0 / R 15x8.0J ET-5
Recommended setup: F 15x7.5J ET0 / R 15x8.0J ET-5 | Economy impact: -4 to -6% | Best for: Street
Appearance: 8.5/10 | Comfort: 8/10 | Install difficulty: ★★☆☆☆
Estimated cost: $2,600-3,400 (wheels + tires + install)
D Aggressive F 15x8.0J ET-5 / R 15x8.5J ET-10
Recommended setup: F 15x8.0J ET-5 / R 15x8.5J ET-10 | Economy impact: -6 to -9% | Best for: Show / occasional track
Appearance: 9/10 | Comfort: 6.5/10 | Install difficulty: ★★★☆☆
Estimated cost: $3,900-5,000 (wheels + tires + install)
E Max Aggressive F 15x8.5J ET-10 / R 15x9.0J ET-15
Recommended setup: F 15x8.5J ET-10 / R 15x9.0J ET-15 | Economy impact: -8 to -12% | Best for: Show only
Appearance: 9.5/10 | Comfort: 4/10 | Install difficulty: ★★★★☆
Estimated cost: $4,800-6,200+ (wheels + tires + install)
Performance Comparison Matrix
| Metric | Tier A | Tier B | Tier C | Tier D | Tier E |
|---|---|---|---|---|---|
| Wheel Spec | F 14x5.5J ET15 / R 14x5.5J ET15 | F 15x6.5J ET8 / R 15x7.0J ET5 | F 15x7.5J ET0 / R 15x8.0J ET-5 | F 15x8.0J ET-5 / R 15x8.5J ET-10 | F 15x8.5J ET-10 / R 15x9.0J ET-15 |
| Economy Impact | Negligible | -2 to -4% | -4 to -6% | -6 to -9% | -8 to -12% |
| Appearance | 7/10 | 8/10 | 8.5/10 | 9/10 | 9.5/10 |
| Comfort | 9.5/10 | 9/10 | 8/10 | 6.5/10 | 4/10 |
| Install Difficulty | ★☆☆☆☆ | ★☆☆☆☆ | ★★☆☆☆ | ★★★☆☆ | ★★★★☆ |
| Cost Range | $450-800 | $1,950-2,550 | $2,600-3,400 | $3,900-5,000 | $4,800-6,200+ |
| Best For | Daily commuting, family use | Daily / street | Street | Show / occasional track | Show only |
Real-World Reference Cases
The examples below are compiled from typical ANKUSI customer configurations and are labeled as reference cases, not individually verified real-world builds.
Case 1: Daily Driver (Factory-Style)
Profile: Everyday driving, prioritizes comfort and low running cost.
Setup: F 14x5.5J ET15 / R 14x5.5J ET15
Cost: ~$620
Outcome: Minimal visual change, ride and fuel economy essentially unaffected.
Case 2: Balanced Enthusiast (Balanced / Flush Fit)
Profile: Wants a sportier stance without sacrificing daily usability.
Setup: F 15x7.5J ET0 / R 15x8.0J ET-5
Cost: ~$3,000
Outcome: Noticeable visual upgrade, fuel economy drop within the expected range.
Case 3: Show Build (Max Aggressive)
Profile: Built primarily for shows or occasional track/show use.
Setup: F 15x8.5J ET-10 / R 15x9.0J ET-15
Cost: ~$5,500
Outcome: Maximum visual impact; daily comfort and fuel economy are heavily compromised, physical test fit required before production.
Decision Guide
1
What's your primary use? Daily commuting → Tier A/B. Weekend street driving → Tier B/C. Show or occasional track use → Tier D/E.
2
What's your budget? Under $800 → Tier A. $800-3,400 → Tier B/C. $3,400+ → Tier D/E.
3
How much does fuel economy matter? Very important → Tier A. Somewhat important → Tier B/C. Not a priority → Tier D/E.
4
Still unsure? Tier C (Balanced / Flush Fit) is the default choice for most Nissan Fairlady Z S31 owners.
Offset & Backspacing Reference
Backspacing is calculated as wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance):
- OE: 14x5.5J ET15 → ~3.84″ backspacing
- Flush: F 15x7.5J ET0 → ~4.25″ F backspacing, R 15x8.0J ET-5 → ~4.3″ R backspacing
- Max: F 15x8.5J ET-10 → ~4.36″ F backspacing, R 15x9.0J ET-15 → ~4.41″ R backspacing
A Note on Clearance
Final clearance depends on the exact tire model, suspension height, brake package, alignment and vehicle tolerances. A physical test fit is recommended before production.
Want to check a different width or offset before you order? Use our Offset & Backspacing Calculator to solve the numbers yourself, or looking for your exact Nissan spec, or want a wheel built to a custom offset for your Nissan Fairlady Z S31? Contact ANKUSI with your bolt pattern and offset target and we will confirm the correct forged wheel spec for your build.
Custom Forged Wheels for the Nissan Fairlady Z S31 (1977)
Everything above is reference data. If you want wheels actually built to it, that is what ANKUSI does: we are a forged wheel factory in Guangzhou, China, IATF 16949 and ISO 9001 certified, forging on our own 10,000-ton press and producing over 120,000 wheels a year. Forging blank, CNC machining, finishing, coating and inspection all happen in the same building — nothing is subcontracted and nothing is relabelled from another manufacturer.
Every set is cut to order, so the 4x114.3 pattern and the 73.1mm centre bore are machined for this car specifically rather than shimmed with adaptor rings. Diameter, width, offset, concavity, monoblock or multi-piece construction and the finish are all yours to choose.
We do not hold 4x114.3 wheels on a shelf — they are forged to order, which is why any offset, width and bore combination on this page is buildable rather than limited to a stock list.
Frequently Asked Questions
What bolt pattern (PCD) does the Nissan Fairlady Z S31 use?
The 1977 Nissan Fairlady Z S31 uses a 4x114.3 bolt pattern.
How many lug bolts does the Nissan Fairlady Z S31 use?
The Nissan Fairlady Z S31 uses a 4-lug bolt pattern (4x114.3), so you need a 4-lug forged wheel to bolt straight on.
What is the center bore size on the Nissan Fairlady Z S31?
The Nissan Fairlady Z S31's center bore is 73.1mm. If an aftermarket wheel has a larger center bore than this, hub-centric rings are recommended so the wheel centers on the hub itself rather than relying on the lug bolts alone.
What size are the factory (stock) wheels on the Nissan Fairlady Z S31?
Factory wheels on the Nissan Fairlady Z S31 are 14x5.5J F/R.
What is the biggest wheel size I can fit on my Nissan Fairlady Z S31 without rubbing?
The most aggressive fitment we recommend without fender work is F 15x8.5J ET-10 / R 15x9.0J ET-15. Going beyond this typically causes rubbing under compression unless you roll the fenders or add camber correction.
What does a flush wheel fitment look like on the Nissan Fairlady Z S31?
For a flush look with minimal to no rubbing, we recommend F 15x7.5J ET0 / R 15x8.0J ET-5 as a starting point on a stock or mildly lowered Nissan Fairlady Z S31.
Do I need wheel spacers for my Nissan Fairlady Z S31?
No. ANKUSI forges each wheel to your exact target offset, including the flush or max specs above, so you get the correct fitment without stacking spacers. Spacers are typically only used to push out an existing OE-offset wheel without replacing it, which isn't necessary when you're ordering a custom-offset forged wheel.
How do I calculate wheel backspacing for my Nissan Fairlady Z S31?
Backspacing (in inches) = wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance). For example, the flush spec above works out to roughly 4.25" backspacing up front and 4.3" in the rear.
What's the difference between wheel offset and backspacing?
Offset is the distance in millimeters from the wheel's true centerline to its mounting face (positive offset pulls the wheel in, negative pushes it out). Backspacing is the distance in inches from the mounting face to the back edge of the wheel barrel. They describe the same fitment from two different reference points, which is why ANKUSI lists both above — some shops and tuning guides quote offset, others quote backspacing.
Can I run staggered wheels (different sizes front and rear) on my Nissan Fairlady Z S31?
Yes — the Nissan Fairlady Z S31's factory and our recommended flush/max fitments already use staggered sizing (different width front and rear), and ANKUSI can forge matching staggered sets to your target offsets.
Forged Wheel Designs for the Nissan Fairlady Z S31
Every design below is forged to order, so it can be machined to the Nissan Fairlady Z S31's 4x114.3 bolt pattern and 73.1 mm center bore, with the width and offset calculated for your setup.
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Wheel Installation Reference: Torque, Thread & TPMS
Thread & Fastener: M12x1.25, conical-seat lug nut.
Factory Torque Spec: 103-122 Nm (76-90 ft-lb). Range covers most Nissan passenger cars and crossovers on M12x1.25 studs.
TPMS: Vehicles built before the 2008 model year were not federally required to carry factory TPMS in the US, though many manufacturers adopted it earlier; verify whether your specific build has TPMS before ordering sensor-compatible wheels.
Tire Pressure: Always set tire pressure to the value on your vehicle's tire placard (driver's doorjamb or glovebox), not the max PSI printed on the tire sidewall — this is trim- and tire-size-specific and stays the same reference point when you switch to a different wheel and tire combination.
Reference data compiled from published OEM service specifications and cross-checked against independent repair sources; always confirm against your owner's manual or door-jamb placard before installation.