While many people choose alloy wheels for their magnificence, there are equally important performance benefits to be derived including...
This is one of the most critical factors affecting a vehicle's road holding ability. Un-sprung weight is that portion of a vehicle that is not supported by the suspension (i.e. wheels, tyres and brakes) and therefore most susceptible to road shock and cornering forces. By reducing un-sprung weight, alloy wheels provide more precise steering input and improved "turning in" characteristics.
By reducing the weight of the vehicle's rotational mass, alloy wheels provide more responsive acceleration and braking.
The added strength of a quality alloy wheel can significantly reduce wheel/tyre deflection in cornering. This is particularly critical with an automobile equipped with high performance tyres where lateral forces may approach 1.0g.
The metals in alloy wheels are excellent conductors of heat - improving heat dissipation from the brakes - reducing risk of brake fade under demanding conditions. Additionally, alloy wheels can be designed to allow more cooling air to flow over the brakes.