Offset Lab
Fitment

BMW G15 - 8 Series Coupe Fitment Guide

Wheel, tire, and stance recommendations for BMW G15 - 8 Series Coupe, built from Offset Lab fitment presets and factory baseline data.

Popular setup

Flush fitment

Front

20x9.5 ET22

255/35R20

Rear

20x11 ET35

295/30R20

Factory baseline for M8 Competition Coupe: 20x9 ET28 / 20x10.5 ET40 on 245/35R20.

Recommendations

Trims and setup styles

Open fitment tool

Trim

M8 Competition Coupe

Factory: 20x9 ET28 / 20x10.5 ET40

245/35R20

5x112 · 66.6mm

Aggressive

Front: 21x10 ET20

Rear: 21x11.5 ET32

Tires: 265/30R21 / 305/25R21

High

Flush

Front: 20x9.5 ET22

Rear: 20x11 ET35

Tires: 255/35R20 / 295/30R20

Medium

OEM+

Front: 20x9 ET28

Rear: 20x10.5 ET40

Tires: 245/35R20 / 275/30R20

Low

Trim

M8 Coupe

Factory: 20x9 ET28 / 20x10.5 ET40

245/35R20

5x112 · 66.6mm

Aggressive

Front: 21x10 ET20

Rear: 21x11.5 ET32

Tires: 265/30R21 / 305/25R21

High

Flush

Front: 20x9.5 ET22

Rear: 20x11 ET35

Tires: 255/35R20 / 295/30R20

Medium

OEM+

Front: 20x9 ET28

Rear: 20x10.5 ET40

Tires: 245/35R20 / 275/30R20

Low

Trim

M850i Coupe

Factory: 20x9 ET28 / 20x10.5 ET40

245/35R20

5x112 · 66.6mm

Aggressive

Front: 21x10 ET20

Rear: 21x11.5 ET32

Tires: 265/30R21 / 305/25R21

High

Flush

Front: 20x9.5 ET22

Rear: 20x11 ET35

Tires: 255/35R20 / 295/30R20

Medium

OEM+

Front: 20x9 ET28

Rear: 20x10.5 ET40

Tires: 245/35R20 / 275/30R20

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.