
20×9 ET37
Documented on a 2010 Audi S4 build — observed custom fitment, not a universal fit guarantee.
Compared with the 20×8.5 ET41 OEM configuration. Calculated geometry only — not fit confirmation.
- Outer edge 10.4 mm farther toward fender (more outward poke)
- Inner edge 2.4 mm closer to suspension (less inner clearance)
- Width +0.5" vs OEM




