BMW G80 M3 Wheel & Tire Fitment Guide

Quick Answer

The BMW G80 M3 (2021+) uses a 5x112 bolt pattern with a 66.6mm center bore. Factory wheels are staggered — 19x9.5 ET20 front and 20x10.5 ET28 rear. Most owners upgrade to a 20-inch forged setup, either staggered or square, commonly landing around 20x9.5–20x10 front and 20x11 rear for a flush stance.

G80 M3 Bolt Pattern & Stock Specs

First thing to confirm before ordering anything: the G80 M3 does not share a bolt pattern with the F80 or earlier M3 chassis. F80-and-older cars run 5x120. The G80 switched to 5x112, so wheels from a previous-generation M3 will not bolt up, and vice versa.

Spec	G80 M3 (2021+)
Bolt pattern	5x112
Center bore	66.6mm
OEM front	19x9.5 ET20
OEM rear	20x10.5 ET28

The factory rear is already a 20x10.5, which is why a straightforward, no-drama upgrade path for this chassis is a square (or near-square) 20-inch setup — you're not asking the car to do anything it doesn't already do from the factory on one end.

Square vs. Staggered: What Actually Changes

Because the G80 ships with a big 20x10.5 out back and a comparatively narrow 19x9.5 up front, there are really two directions to go:

• Staggered 20/21 — keep the front smaller (20x9.5–20x10) and push the rear to a wider 21x10.5 or similar. This preserves the factory-style front/rear ratio and steering feel, and is the more common route for owners chasing a deeper concave look at the rear.
• Square 20/20 — run the same width front and rear (20x10 or 20x11 both corners). Because the G80's arches and factory rear width already accommodate a 10.5-11" wheel, a square setup is one of the easier aggressive fitments to execute cleanly on this chassis without spacers or rolled fenders.

Either way, the 5x112 pattern and the width the G80 already carries at the rear from the factory are what make these bigger, more aggressive widths workable in the first place — this isn't a chassis you have to fight to fit a real wheel under.

Real G80 Builds We've Done

This is where a fitment guide is only as good as the cars it's actually been proven on. Two G80 M3 Competition builds we've put out on our CS-J two-piece wheel:

Build	Wheel	Sizes	Finish
Quan's BMW M3 Competition	CS-J	20x10 / 20x11	Gloss Brushed Clear
BMW M3 Competition (G80)	CS-J	20x10 / 20x11	Gloss Polished Clear

Both cars ran the same size combination — 20x10 front, 20x11 rear — which lines up with the staggered strategy above: a modest step up from the factory 19x9.5 front, and a wider-than-stock rear. The CS-J is available in both Gloss Brushed Clear and Gloss Polished Clear, so if you're weighing a machined-face look against a full polish, that's a real decision other G80 owners have already made on this exact wheel.

We've also built the MB-K monoblock in 20x9.5 / 20x11 for M3 Competition customers, in Gloss Brushed Clear — a useful reference point if you're leaning monoblock instead of two-piece for this size range.

Monoblock or Two-Piece — and What It Costs

Every wheel we build is made to order, and the construction choice affects both price and lead-time expectations, not just looks.

Category	Example Wheels	Starting Price
Monoblock (forged, single-piece)	MB-K, MB-A, MB-C Comp Spec, and others	$700
Two-piece (forged, modular)	CS-J, CS-F, CS-J Comp Spec, and others	$1,000

Monoblock construction is the lighter, simpler option and the better fit if rotational mass and unsprung weight are the priority — a real consideration on a car like the G80 M3, where a forged monoblock drops meaningful weight versus the factory cast wheels. Two-piece wheels open up more finish and lip-style flexibility (barrel and face can be finished differently, as shown in the Gloss Brushed vs. Gloss Polished CS-J examples above) at a higher starting price point.

A Few Fitment Notes Before You Order

• Confirm you're speccing for G80, not F80/F82 — the bolt pattern change means wheels are not interchangeable between generations even though both cars are called "M3."
• The 66.6mm center bore is specific to this chassis; any custom offset request should be built around that bore, not assumed from another BMW platform.
• If you're deciding between a square and staggered layout, look at what the factory rear (20x10.5 ET28) is already doing on your car before assuming you need to go wider than 20x11 — the sizes proven on the G80 builds above are working well within factory arch limits.

If you're ready to spec wheels for your G80 M3, browse the full lineup and finish options at motivoforged.com/wheels/bmw/m3, or reach out for a quote and we'll help you land on the right size, offset, and finish for your car.