The Eibach Pro-Spacer 25mm wheel spacer for 2015 Ford Mustang (EcoBoost, V6 and GT) widens track width to improve stability, handling and clearance for larger tires while giving a more aggressive stance. Eibach explains that increasing track width lowers center of gravity and reduces body roll, helping capability on- or off-road without modifying suspension geometry.
Eibach Pro-Spacer System 25mm Black Spacer - 2015 Ford Mustang Ecoboost / V6 / GT