BMW i3 I01 (2018) Bolt Pattern & Wheel Fitment
BMW i3 I01 (2018): 5x112 bolt pattern, 66.6mm center bore. Factory wheels: 19x5.0J F/R. Reference fitment ranges.
✓ 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) | 19x5.0J F/R |
| Flush Fitment | 20x5.5J at ET40 offset |
| Maximum Aggressive | 20x6.0J at ET35 offset |
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
On a compact performance platform, every pound of rotational mass fights the car's natural agility. A forged wheel keeps strength at the factory-rated level while cutting that rotational weight, which is where the driving-feel improvement actually comes from.
The BMW i3 I01 runs a 5x112 bolt pattern, 66.6mm center bore, and a 19x5.0J, front and rear, wheel from the factory. Our Flush Fitment reference is 20x5.5J ET40, which tucks the tire under the fender lip on a stock-height BMW i3 I01. Our Maximum Aggressive reference is 20x6.0J ET35 — beyond that offset, expect rubbing against the inner fender liner under compression without further trimming.
BMW i3 OE Wheel Specs
The 2018 BMW i3 I01 (EV Hatch) uses a 5x112 bolt pattern with a 66.6mm center bore. Factory wheels are 19x5.0J F/R.
Why the factory spec works for most owners:
- Balances ride comfort with everyday drivability
- A commonly used size for this vehicle class, supporting parts and tire availability
- Maintains clearance for the factory suspension and brake components
- Provides stable, predictable handling across normal driving conditions
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the BMW i3 I01 (2018) we drill the 5x112 pattern and cut the centre bore to 66.6mm 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 with minimal rubbing, F/R 20x5.5J ET40 is the recommended starting point on a stock or mildly lowered BMW i3 I01.
Maximum Aggressive Fitment
F/R 20x6.0J ET35 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 19x5.0J ET43
Recommended setup: 19x5.0J ET43 | 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 20x5.5J ET42
Recommended setup: 20x5.5J ET42 | 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 20x5.5J ET40
Recommended setup: 20x5.5J ET40 | 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 20x6.0J ET38
Recommended setup: 20x6.0J ET38 | 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 20x6.0J ET35
Recommended setup: 20x6.0J ET35 | 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 | 19x5.0J ET43 | 20x5.5J ET42 | 20x5.5J ET40 | 20x6.0J ET38 | 20x6.0J ET35 |
| 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: 19x5.0J ET43
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: 20x5.5J ET40
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: 20x6.0J ET35
Cost: ~$5,500
Outcome: Maximum visual impact; daily comfort and fuel economy are heavily compromised, physical test fit required before production.
Decision Guide
Offset & Backspacing Reference
Backspacing is calculated as wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance):
- OE: 19x5.0J ET43 → ~4.69″ backspacing
- Flush: 20x5.5J ET40 → ~4.82″ backspacing
- Max: 20x6.0J ET35 → ~4.88″ backspacing
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 BMW spec, or want a wheel built to a custom offset for your BMW i3 I01? 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 BMW i3 I01 (2018)
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 5x112 pattern and the 66.6mm 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 — most BMW orders on this platform land somewhere between the 20x5.5J ET40 flush setup and the 20x6.0J ET35 aggressive setup referenced above.
Designs we already tool for the 5x112 pattern — each one is re-cut to your sizes and offsets:
Matte Silver Forged Wheels – Porsche 911 / BMW M3 Fitment (5-Lug)
Rays Volk Racing TE37 Bronze 6-Spoke Deep Lip Forged Wheels – Porsche 911 / BMW M3 Fitment (5-Lug)
APEX VS-5RS Bright Silver 5 Y-Spoke Forged Wheels – Porsche 911 / BMW M3 Fitment (5-Lug)
Transparent Green Forged Wheels – Porsche 911 / BMW M3 Fitment (5-Lug)Frequently Asked Questions
What bolt pattern (PCD) does the BMW i3 I01 use?
How many lug bolts does the BMW i3 I01 use?
What is the center bore size on the BMW i3 I01?
What size are the factory (stock) wheels on the BMW i3 I01?
What is the biggest wheel size I can fit on my BMW i3 I01 without rubbing?
What does a flush wheel fitment look like on the BMW i3 I01?
Do I need wheel spacers for my BMW i3 I01?
How do I calculate wheel backspacing for my BMW i3 I01?
What's the difference between wheel offset and backspacing?
Can I run staggered wheels (different sizes front and rear) on my BMW i3 I01?
Wheel Installation Reference: Torque, Thread & TPMS
Thread & Fastener: M14x1.25, 60-degree conical-seat lug bolt.
Factory Torque Spec: 140 Nm (103 ft-lb). Consistent across modern BMW passenger and X-series models using factory conical-seat bolts.
TPMS: TPMS (Tire Pressure Monitoring System) has been federally mandated on all new light vehicles sold in the US since the 2008 model year. If your wheels use OE-style sensors, have them transferred or cloned to the new wheels at installation.
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.