BMW 6-Series Gran Turismo G32 (2018) Bolt Pattern & Wheel Fitment
BMW 6-Series Gran Turismo G32 (2018): 5x112 bolt pattern, 66.6mm center bore. Factory wheels: F: 19x8.5J R: 19x9.5J. Reference fitment ranges.
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Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Factory (OE) | F: 19x8.5J R: 19x9.5J |
| Flush Fitment | F 20x9.0J ET25 / R 20x10.0J ET35 |
| Maximum Aggressive | F 21x9.5J ET20 / R 21x10.5J ET30 |
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 BMW 6-Series Gran Turismo G32's factory wheel spec reflects a deliberate balance between comfort, steering feel and durability that the engineering team tuned for. Forging lets ANKUSI match that same strength target while trimming rotational mass — the part of a wheel upgrade that actually changes how the car drives, not just how it looks.
The BMW 6-Series Gran Turismo G32 runs a 5x112 bolt pattern, 66.6mm center bore, and a F: 19x8.5J wheel from the factory. Our Flush Fitment reference is F 20x9.0J ET25 / R 20x10.0J ET35, which tucks the tire under the fender lip on a stock-height BMW 6-Series Gran Turismo G32. Our Maximum Aggressive reference is F 21x9.5J ET20 / R 21x10.5J ET30 — beyond that offset, expect rubbing against the inner fender liner under compression without further trimming.
BMW 6-Series Gran Turismo OE Wheel Specs
The 2018 BMW 6-Series Gran Turismo G32 (Gran Turismo) uses a 5x112 bolt pattern with a 66.6mm center bore. Factory wheels are F: 19x8.5J R: 19x9.5J.
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 6-Series Gran Turismo G32 (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 20x9.0J ET25 / R 20x10.0J ET35 is the recommended starting point on a stock or mildly lowered BMW 6-Series Gran Turismo G32.
Maximum Aggressive Fitment
F 21x9.5J ET20 / R 21x10.5J ET30 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 19x8.5J ET30 / R 19x9.5J ET44
Recommended setup: F 19x8.5J ET30 / R 19x9.5J ET44 | 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 20x9.0J ET28 / R 20x10.0J ET40
Recommended setup: F 20x9.0J ET28 / R 20x10.0J ET40 | 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 20x9.0J ET25 / R 20x10.0J ET35
Recommended setup: F 20x9.0J ET25 / R 20x10.0J ET35 | 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 21x9.5J ET23 / R 21x10.5J ET33
Recommended setup: F 21x9.5J ET23 / R 21x10.5J ET33 | 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 21x9.5J ET20 / R 21x10.5J ET30
Recommended setup: F 21x9.5J ET20 / R 21x10.5J ET30 | 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 19x8.5J ET30 / R 19x9.5J ET44 | F 20x9.0J ET28 / R 20x10.0J ET40 | F 20x9.0J ET25 / R 20x10.0J ET35 | F 21x9.5J ET23 / R 21x10.5J ET33 | F 21x9.5J ET20 / R 21x10.5J ET30 |
| 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 19x8.5J ET30 / R 19x9.5J ET44
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 20x9.0J ET25 / R 20x10.0J ET35
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 21x9.5J ET20 / R 21x10.5J ET30
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: F 19x8.5J ET30 → ~5.93″ F backspacing, R 19x9.5J ET44 → ~6.98″ R backspacing
- Flush: F 20x9.0J ET25 → ~5.98″ F backspacing, R 20x10.0J ET35 → ~6.88″ R backspacing
- Max: F 21x9.5J ET20 → ~6.04″ F backspacing, R 21x10.5J ET30 → ~6.93″ R 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 6-Series Gran Turismo G32? 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 6-Series Gran Turismo G32 (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.
Designs we already tool for the 5x112 pattern — each one is re-cut to your sizes and offsets:
BMW Style 763M Clear Copper Tint 10-Spoke Y-Design Forged Wheels – BMW M3 CS Handschalter Fitment (19-21in, 5×112)
APEX VS 5RS Matte Gunmetal 5-Spoke Y-Design Forged Wheels – BMW M3 CS Handschalter Fitment (19-21in, 5×112)
GT Full Polished Brushed Silver Mesh Multi-Spoke Forged Wheels – BMW M3 CS Handschalter Fitment (19-21in, 5×112)
EKK Matte Black 15-Spoke Forged Wheels – BMW M3 CS Handschalter Fitment (19-22in, 5×112)Frequently Asked Questions
What bolt pattern (PCD) does the BMW 6-Series Gran Turismo G32 use?
How many lug bolts does the BMW 6-Series Gran Turismo G32 use?
What is the center bore size on the BMW 6-Series Gran Turismo G32?
What size are the factory (stock) wheels on the BMW 6-Series Gran Turismo G32?
What is the biggest wheel size I can fit on my BMW 6-Series Gran Turismo G32 without rubbing?
What does a flush wheel fitment look like on the BMW 6-Series Gran Turismo G32?
Do I need wheel spacers for my BMW 6-Series Gran Turismo G32?
How do I calculate wheel backspacing for my BMW 6-Series Gran Turismo G32?
What's the difference between wheel offset and backspacing?
Can I run staggered wheels (different sizes front and rear) on my BMW 6-Series Gran Turismo G32?
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.