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2006 Infiniti QX56 Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting Infiniti QX56 wheels? This page gives the 2006 Infiniti QX56 bolt pattern (6x139.7), centre bore, factory rim size and the offset range for aftermarket and forged Infiniti QX56 rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 2006 Infiniti QX56 uses a 6x139.7 bolt pattern with a 77.8 mm centre bore and M12x1.25 lug nuts. Factory wheels: 18x8J at ET25. For aftermarket wheels, 20x9J ET10 sits flush and 22x10J ET5 is the most aggressive fit.
Forged wheels for the 2006 Infiniti QX56 — drilled 6x139.7 with a 77.8 mm centre bore, built to the offset you choose. From $220 per wheel, made to order in 20–25 days.
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Infiniti QX56 (2006): 6x139.7 bolt pattern, 77.8mm center bore. Factory wheels: 18x8J. Reference fitment ranges.
Bolt Pattern6x139.7
Wheel Bolt/NutM12x1.25 Nut
Center Bore77.8mm
Wheel Load Rating900–1250 kg/wheel (SUV segment reference)
Year2006
CategorySUV
✓ Data check: the bolt pattern and center bore on this page match an independent fitment reference. Last reviewed September 18, 2026. How we verify
Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Factory (OE) | 18x8J at ET25 |
| Flush Fitment | 20x9J at ET10 offset |
| Maximum Aggressive | 22x10J at ET5 offset |
Forged Wheel Designs for the Infiniti QX56
Every design below is forged to order, so it can be machined to the Infiniti QX56's 6x139.7 bolt pattern and 77.8 mm center bore, with the width and offset calculated for your setup.
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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
Because an SUV's center of gravity is already higher than a sedan's, anything added at the corners — including wheel weight — has an outsized effect on handling balance. A forged wheel lets us hit the visual stance owners want without adding the rotational mass a cast wheel of the same strength would carry.
The Infiniti QX56 runs a 6x139.7 bolt pattern, 77.8mm center bore, and a 18x8J at ET25, front and rear, wheel from the factory. Our Flush Fitment reference is 20x9J ET10, which tucks the tire under the fender lip on a stock-height Infiniti QX56. Our Maximum Aggressive reference is 22x10J ET5 — beyond that offset, expect rubbing against the inner fender liner under compression without further trimming.
Infiniti QX56 OE Wheel Specs
The 2006 Infiniti QX56 (SUV) uses a 6x139.7 bolt pattern with a 77.8mm center bore. Factory wheels are 18x8J at ET25.
Why the factory spec works for most owners:
- Supports the vehicle's curb weight and load capacity
- Preserves ground clearance for everyday and light off-road use
- Balances ride comfort with cargo and passenger stability
- Maintains clearance for the factory suspension travel and brake package
ANKUSI builds these wheels — we are the forging factory, not a reseller. For the Infiniti QX56 (2006) we drill the 6x139.7 pattern and cut the centre bore to 77.8mm 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 — 10,093 vehicles, free to download, CC BY 4.0.
Real-World Fitment Notes
Chassis: Lowering springs or lift. Tires: 265/70 R18.
Offset & Backspacing Reference
Backspacing is calculated as wheel width (in) ÷ 2 + offset (mm) ÷ 25.4 + 0.5 (flange allowance):
- OE: 18x8J ET25 → ~5.48″ backspacing
- Flush: 20x9J ET10 → ~5.39″ backspacing
- Max: 22x10J ET5 → ~5.7″ 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 Infiniti spec, or want a wheel built to a custom offset for your Infiniti QX56? Contact ANKUSI with your bolt pattern and offset target and we will confirm the correct forged wheel spec for your build.
Infiniti QX56: Specs by Model Year
| Year | Bolt pattern | Center bore | Factory wheel |
|---|---|---|---|
| 2006 | 6x139.7 | 77.8 mm | 18x8J |
| 2008 | 6x139.7 | 77.8 mm | 20x8J |
Bolt pattern and center bore stay the same across all 2 model years in our database (2006–2008).
Vehicles With the Same Hub as the Infiniti QX56 (6x139.7, 77.8 mm Bore)
In our database, 30 other vehicle entries from 5 makes use exactly the same 6x139.7 bolt pattern and 77.8 mm center bore. Factory wheels from these cars bolt on and center on the hub without rings; offset and width still have to be checked.
6x139.7 is used by 4.0% of the vehicle pages in our English fitment guide (258 of 6,503); 12.4% of those also use a 77.8 mm center bore.
Hub-Centric Rings for a 77.8 mm Center Bore
A wheel with a center bore larger than 77.8 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 78.1 mm | 78.1 → 77.8 mm |
| 84.1 mm | 84.1 → 77.8 mm |
| 93.1 mm | 93.1 → 77.8 mm |
| 100.1 mm | 100.1 → 77.8 mm |
ANKUSI forged wheels are bored to exactly 77.8 mm for this vehicle, so no ring is needed.
Frequently Asked Questions
What bolt pattern (PCD) does the Infiniti QX56 use?
The 2006 Infiniti QX56 uses a 6x139.7 bolt pattern.
How many lug bolts does the Infiniti QX56 use?
The Infiniti QX56 uses a 6-lug bolt pattern (6x139.7), so you need a 6-lug forged wheel to bolt straight on.
What is the center bore size on the Infiniti QX56?
The Infiniti QX56's center bore is 77.8mm. 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 Infiniti QX56?
Factory wheels on the Infiniti QX56 are 18x8J at ET25.
What is the biggest wheel size I can fit on my Infiniti QX56 without rubbing?
The most aggressive fitment we recommend without fender work is 22x10J at ET5 offset. 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 Infiniti QX56?
For a flush look with minimal to no rubbing, we recommend 20x9J at ET10 offset as a starting point on a stock or mildly lowered Infiniti QX56.
Do I need wheel spacers for my Infiniti QX56?
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 Infiniti QX56?
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 5.39" of backspacing.
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 Infiniti QX56?
The Infiniti QX56 runs the same wheel size front and rear from the factory, so staggered fitment is not required. ANKUSI can still forge a staggered set (wider rear) on request if you want a more aggressive stance.
Sources and Last Update
Data checked against: avtoreference.com.
This record is part of the open ANKUSI Wheel Fitment Dataset (DOI 10.5281/zenodo.23241521, CC BY 4.0).
Other cars on the same factory size: 18x8 wheels · 18 inch wheels.
Compiled by the ANKUSI Wheels engineering team, an IATF 16949 and ISO 9001 certified forged wheel factory in Guangzhou.