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2025 BMW 3 Series G20 Wheels & Rims: Bolt Pattern, Offset & Sizes
Fitting BMW 3 Series G20 wheels? This page gives the 2025 BMW 3 Series G20 bolt pattern (5x112), centre bore, factory rim size and the offset range for aftermarket and forged BMW 3 Series G20 rims: the same spec sheet ANKUSI uses when machining forged wheels for this car.
Quick answer: The 2025 BMW 3 Series G20 uses a 5x112 bolt pattern with a 66.6 mm centre bore and M12x1.5 lug bolts. Factory wheels: 18x8.0J at ET34, front and rear. For aftermarket wheels, 19x8.5J ET35 sits flush and 19x9.0J ET28 is the most aggressive fit.
Forged wheels for the 2025 BMW 3 Series G20 — drilled 5x112 with a 66.6 mm centre bore, built to the offset you choose. From $220 per wheel, made to order in 20–25 days.
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BMW 3 Series G20 (2025): 5x112 bolt pattern, 66.6mm center bore. Factory wheels: 18x8.0J at ET34 offset, front and rear. Reference fitment ranges.
Bolt Pattern5x112
Wheel Bolt/NutM12x1.5 Bolt
Center Bore66.6mm
Wheel Load Rating700–850 kg/wheel (Performance / Sports Car segment reference)
Year2025
CategorySport Sedan
✓ Data check: the bolt pattern and center bore on this page match an independent fitment reference. Last reviewed September 25, 2026. How we verify
Wheel Size & Offset at a Glance
| Configuration | Wheel Size & Offset |
|---|---|
| Factory (OE) | 18x8.0J at ET34 offset, front and rear |
| Flush Fitment | 19x8.5J at ET35 offset |
| Maximum Aggressive | 19x9.0J at ET28 offset |
Forged Wheel Designs for the BMW 3 Series G20
Every design below is forged to order, so it can be machined to the BMW 3 Series G20's 5x112 bolt pattern and 66.6 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
BMW tunes the 3 Series' steering feel around a specific unsprung mass target, so a forged wheel at the same or similar size preserves that factory-calibrated feel while trimming rotational weight — a cleaner path to sharper turn-in than moving to a heavier cast wheel of the same diameter.
The 3 Series runs a 5x112 bolt pattern, 66.6mm center bore, and an 18x8.0J ET34 wheel from the factory, front and rear. Our Flush Fitment reference is a 19x8.5J at ET35, which fills the fender opening on a stock or mildly lowered 3 Series. Our Maximum Aggressive reference is a 19x9.0J at ET28 — beyond that, expect rubbing under compression without fender rolling or camber correction.
BMW 3 Series OE Wheel Specs
The 2025 BMW 3 Series G20 (Sport Sedan) uses a 5x112 bolt pattern with a 66.6mm center bore. Factory wheels are 18x8.0J at ET34 offset, front and rear.
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 BMW 3 Series G20 (2025) 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 — 10,093 vehicles, free to download, CC BY 4.0.
Offset and Backspacing: Factory Wheel vs Options
Backspacing ≈ width/2 + ET/25.4 + 0.5 in. "Inward" means closer to the suspension; "outward" means closer to the fender lip.
| Setup | Size | ET | Backspacing | Inward vs OE | Outward vs OE |
|---|---|---|---|---|---|
| Factory (OE) | 18x8J | ET34 | 5.84 in (148 mm) | — | — |
| Flush | 19x8.5J | ET35 | 6.13 in (156 mm) | +7 mm | +5 mm |
| Maximum | 19x9J | ET28 | 6.10 in (155 mm) | +7 mm | +19 mm |
Vehicles With the Same Hub as the BMW 3 Series G20 (5x112, 66.6 mm Bore)
In our database, 823 other vehicle entries from 21 makes use exactly the same 5x112 bolt pattern and 66.6 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.
5x112 is used by 21.6% of the vehicle pages in our English fitment guide (1,407 of 6,503); 58.6% of those also use a 66.6 mm center bore.
Hub-Centric Rings for a 66.6 mm Center Bore
A wheel with a center bore larger than 66.6 mm needs a hub-centric ring. The most common combinations:
| Wheel bore | Ring size |
|---|---|
| 67.1 mm | 67.1 → 66.6 mm |
| 70.1 mm | 70.1 → 66.6 mm |
| 70.5 mm | 70.5 → 66.6 mm |
| 71.6 mm | 71.6 → 66.6 mm |
| 73.1 mm | 73.1 → 66.6 mm |
ANKUSI forged wheels are bored to exactly 66.6 mm for this vehicle, so no ring is needed.
Frequently Asked Questions
What bolt pattern (PCD) does the BMW 3 Series G20 use?
The 2025 BMW 3 Series G20 uses a 5x112 bolt pattern.
How many lug bolts does the BMW 3 Series G20 use?
The BMW 3 Series G20 uses a 5-lug bolt pattern (5x112), so you need a 5-lug forged wheel to bolt straight on.
What is the center bore size on the BMW 3 Series G20?
The BMW 3 Series G20's center bore is 66.6mm. 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 BMW 3 Series G20?
Factory wheels on the BMW 3 Series G20 are 18x8.0J at ET34 offset, front and rear.
What is the biggest wheel size I can fit on my BMW 3 Series G20 without rubbing?
The most aggressive fitment we recommend without fender work is 19x9.0J at ET28 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 BMW 3 Series G20?
For a flush look with minimal to no rubbing, we recommend 19x8.5J at ET35 offset as a starting point on a stock or mildly lowered BMW 3 Series G20.
Do I need wheel spacers for my BMW 3 Series G20?
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 BMW 3 Series G20?
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 6.13" 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 BMW 3 Series G20?
The BMW 3 Series G20 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.
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.
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.