Wheel, tire, and stance recommendations for BMW G29 - Z4, built from Offset Lab fitment presets and factory baseline data.
Popular setup
Front
19x8.5 +25
235/40R19
Rear
19x9.5 +35
265/35R19
Factory baseline for Z4 M40i: 18x8 +30 / 18x9 +40 on 225/45R18.
Recommendations
Trim
Factory: 18x8 +30 / 18x9 +40
225/45R18
5x112 · 66.6mm
Aggressive
Front: 19x9 +20
Rear: 19x10.5 +30
Tires: 245/35R19 / 285/30R19
High
Flush
Front: 19x8.5 +25
Rear: 19x9.5 +35
Tires: 235/40R19 / 265/35R19
Medium
OEM+
Front: 18x8 +30
Rear: 18x9 +40
Tires: 225/45R18 / 255/40R18
Low
Fitment note
Final fitment depends on tire model, alignment, suspension height, brake clearance, body tolerance, and intended use. Test fit before committing to permanent changes.