slightly off-topic, but..... perhaps you remember the 1300cc Peugeot 205 Rallye. Fitted from works with steel wheels.. why? Because they are lighter, they said...and steel is more forgiving especially on rough ground...
Thats interesting. I didnt think about durability at all. Im not the boy racer type but I enjoy taking fast corners and I can sometimes end up close to a curb or two
I think the weight difference isnt enough to be felt on a road going car. Racers here will probably say different ;)