Alloys look attractive
Alloy help dissipate heat from your breaks results in better braking.
Alloys rims are lighter than Steel results in better handling and Suspension
They are Superior than Steel in quality which results in durability (Provided that they are real ALLOYS)
Don't go for Chinese ones, they are just C class copies n only good for Shashkas. They are neither Lighter nor Superior and cant bear the shock beating of Pakistani Roads. better go for quality ones or stick to Steel Rims