What does a strut tower brace do?
The suspension in your car is designed to work with a static geometry; in other words, strut towers aren’t supposed to move. When the strut towers bend inwards or outwards, the geometry has changed; when this happens the camber of your wheels is altered, which alters how much of your tires are in contact with the ground — generally reducing traction. A strut tower bar is essentially a metal bar that runs from the top of one strut tower to the other. The idea is to keep the suspension geometry constant by tying the strut towers together. How does tying them together help? There are two ways the strut towers can deflect: towards each other, or away from each other. When hitting a bump, the strut towers want to bend inward. A strut tower brace forces each tower push against each other. This means most of the force of the deflection is cancelled out, preventing the geometry from being altered significantly. When a car is cornering, the explanation gets a bit complicated. The strut towers
