The accepted range is ET20 to ET45; factory is ET29 front, ET40 rear. Proven square setups: 18x9.5 ET28 or ET35 with 265/35-18 (ET35 needs 5 mm front spacers on OEM suspension). Source: APEX F87 guide.
IN SHORT
The accepted range is ET20 to ET45; factory is ET29 front, ET40 rear.
01Range and factory point
RANGE
ET20 to ET45
FACTORY FRONT
ET29
FACTORY REAR
ET40
Proven square setups: 18x9.5 ET28 or ET35 with 265/35-18 (ET35 needs 5 mm front spacers on OEM suspension). Source: APEX F87 guide.
Proven staggered: 18x9.5 ET28 front / 18x10.5 ET40 rear with 265/35 & 285/35-18. Source: APEX F87 guide.
19-inch square: 19x9.5 ET28 with 265/30-19. Staggered 19x9.5 ET28 / 19x10.5 ET45 with 265/30 & 295/30-19. Source: APEX F87 guide.
18x10.5 and wider rears with aggressive tires want fender rolling; -2 to -3.5 deg front camber for track widths. Source: APEX F87 guide.
Tire Rack's by-vehicle list for the 2017 M2 shows 19 and 20-inch only (87 models, Sep 2 2026). 18-inch is a real fitment on this car but Tire Rack does not stock a standard-fitment 18 for it today — say so rather than pretending it isn't an option.
02Listed wheels by offset
FIFTEEN52 SECTOR RSR — 19×9.5 ET22 front / 19×10.5 ET25 rear · 25.2 lb · $1,487 the set · limited stock
BBS FI-R — 19×9.5 ET22 front / 19×10.5 ET35 rear · 18 lb · $8,890 the set · limited stock
KANSEI SEVEN — 19×9.5 ET22 front / 19×10.5 ET22 rear · weight not published · $1,780 the set · limited stock
FIFTEEN52 HOLESHOT RSR — 19×9.5 ET22 front / 19×10.5 ET25 rear · 27.55 lb · $1,692 the set
BBS RI-S — 20×9 ET25 front / 20×10 ET34 rear · 26.4 lb · $8,100 the set · limited stock
BBS LM — 19×9 ET27 front / 19×10 ET37 rear · 25.4 lb · $6,990 the set · limited stock
O.Z. ESTREMA GT HLT — 19×9 ET29 front / 19×10 ET40 rear · 22.85 lb · $2,288 the set · in stock
Fitment is computed from published vehicle data and the retailer's listed sizes (catalog 2026-09-04-tirerack-d, verified on Sep 4, 2026). Prices are list prices on that date. Verify with your installer before you buy. Buy links may be affiliate links.