Braking: My 2013 G37 Sedan felt loose under hard braking at medium to high speeds. This Rear Lower Power Brace did a great job at making my car feel more stable under all braking conditions. Traction: The car had almost no wheel slip when launching from a stop in DS mode. (Notes: 7AT, K&N Intake System, 235 width inexpensive tires). Cornering: It feels like a strut tower brace on the back of the vehicle. The brace keeps the rear in control when cornering and hairpin style turns too.