At a glance
- Model years covered: 2019, 2020 (identical factory fitments)
- Factory setup: staggered on at least one trim
- OE sizes: 255/40R18 · 275/40R18 · 265/35R19 · 285/30R20
- Generation: F82/F83
- Factory power range: 425–454 hp
Shop the widest OE size (285/30R20): Tire Rack → · SimpleTire → · local install partners on the buy page.
Factory fitments by trim
| Trim | Front | Rear | Setup |
|---|---|---|---|
| M4 425 hp | 255/40R18 9Jx18 ET29 | 275/40R18 10Jx18 ET40 | Staggered +2.4% Ø |
| M4 Competition 444 hp | 255/40R18 9Jx18 ET29 | 275/40R18 10Jx18 ET40 | Staggered +2.4% Ø |
| M4 CS 454 hp | 265/35R19 9.5Jx19 ET29 | 285/30R20 10.5Jx20 ET42 | Staggered +1.6% Ø |
Versus the 2017–2018 BMW M4 record: sizes added: 265/35R19, 285/30R20; trims added: M4 CS.
255 = tread width in millimetres · 40 = sidewall height as a percentage of that width · R18 = radial construction on a 18-inch wheel. Two sizes with the same overall diameter are speedometer-compatible, that is the whole game in staggering.
Run these sizes in the calculator: this era’s factory stagger sits outside the aftermarket 1% rule by design (the car is calibrated for its exact pairing at the plant), so copy the factory setup exactly, and test any pairing you are considering in the stagger calculator.
Fitment hardware
Dialing in how a setup sits on this platform? Hub-centric wheel spacers fine-tune effective offset and caliper clearance one axle at a time, aftermarket wheels usually need lug nuts in the matching seat and thread, and aggressive fitments bring adjustable control arms into play for camber. Code KSPAF takes 5% off at KSP Performance. Start with the measurement math in the wheel spacer sizing guide.
Checking an aftermarket stagger for this car? Run the pairing through the stagger calculator. OE fitment data from Wheel-Size.com; years and packages vary by market.
Always confirm against the tire placard on your driver-side door jamb and your actual wheel widths before ordering. Fitments here cover common factory and community setups. Years and packages vary.
Some links on this page are affiliate links. If you buy through them we may earn a commission from the retailer, at no extra cost to you.
// The Garage: add your car — we watch it
Tire recalls are filed with NHTSA on random Tuesdays and nobody tells you. Park your car here and when a campaign names your platform’s sizes — or its fitment data changes — you get one email. That is the entire list: no newsletter, no promos, email + platform is all we store, and every alert carries an unsubscribe link.
BMW M4 by era
← 2017–2018 · All BMW M4 years → · 2021 →
Size deep-dives for every OE size above are linked in the tables; the full directory lives at /tire-sizes/ and /vehicles/.
// Sources & further reading
- Your vehicle’s tire placard (driver-side door jamb) & owner’s manual · The legally required OEM fitment record on every car, always the first authority.
- Tire and Rim Association (T&RA) standards · The US standards body whose yearbook defines size/rim pairing norms.
How we compile and verify fitment data: our methodology. Spot an error? fitment@staggeredsetup.com. Corrections ship fast.