Trim
ATS-V
Factory: 18x9 +30
255/35R18
5x120 · 66.9mm
Aggressive
Front: 18x10 +20
Rear: 18x10 +20
Tires: 275/35R18
High
Flush
Front: 18x9.5 +25
Rear: 18x9.5 +25
Tires: 265/35R18
Medium
OEM+
Front: 18x9 +30
Rear: 18x9 +30
Tires: 255/35R18
Low
Fitment
Cadillac Alpha - ATS-V Fitment Guide
Wheel, tire, and stance recommendations for Cadillac Alpha - ATS-V, built from Offset Lab fitment presets and factory baseline data.
Popular setup
Flush fitment
Front
18x9.5 +25
265/35R18
Rear
18x9.5 +25
265/35R18
Factory baseline for ATS-V: 18x9 +30 on 255/35R18.
Recommendations
Trims and setup styles
Trim
SS
Factory: 20x9 +25 / 20x10 +35
255/35R20
5x120 · 66.9mm
Aggressive
Front: 20x10.5 +15
Rear: 20x11.5 +42
Tires: 295/30R20 / 315/30R20
High
Flush
Front: 20x10 +23
Rear: 20x11 +43
Tires: 285/30R20 / 305/30R20
Medium
OEM+
Front: 20x9 +25
Rear: 20x10 +35
Tires: 255/35R20 / 285/30R20
Low
Trim
SS 1LE
Factory: 20x9 +25 / 20x10 +35
255/35R20
5x120 · 66.9mm
Aggressive
Front: 20x10.5 +15
Rear: 20x11.5 +42
Tires: 295/30R20 / 315/30R20
High
Flush
Front: 20x10 +23
Rear: 20x11 +43
Tires: 285/30R20 / 305/30R20
Medium
OEM+
Front: 20x9 +25
Rear: 20x10 +35
Tires: 255/35R20 / 285/30R20
Low
Trim
ZL1
Factory: 20x9 +25 / 20x10 +35
255/35R20
5x120 · 66.9mm
Aggressive
Front: 20x10.5 +15
Rear: 20x11.5 +42
Tires: 295/30R20 / 315/30R20
High
Flush
Front: 20x10 +23
Rear: 20x11 +43
Tires: 285/30R20 / 305/30R20
Medium
OEM+
Front: 20x9 +25
Rear: 20x10 +35
Tires: 255/35R20 / 285/30R20
Low
Trim
ZL1 1LE
Factory: 20x9 +25 / 20x10 +35
255/35R20
5x120 · 66.9mm
Aggressive
Front: 20x10.5 +15
Rear: 20x11.5 +42
Tires: 295/30R20 / 315/30R20
High
Flush
Front: 20x10 +23
Rear: 20x11 +43
Tires: 285/30R20 / 305/30R20
Medium
OEM+
Front: 20x9 +25
Rear: 20x10 +35
Tires: 255/35R20 / 285/30R20
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.