Better.. atleast those have a better rim diameter than the ones originally posted, but still to crazy for my tastes. Street cars should have Rims correctly proportioned to the stock(or slightly modified) fenders, IMO.

 

how do we know they aer for street uses?

the s12 in my sig sure wasnt

YouTube - Silvia Silhouette

 

The Z isnt a race car thats for damn sure, and the originally posted wheels are a bit to F1 Size comparrison) to really be functional unless in a tubbed fender (your sig)/ open wheel race car.

And the original rims are something that I would see on a mid 80's japanese coupe with 6' over fenders and rocking the oil-cooler outside the front bumper. I just really dont like that style. I know its based off race cars of the era, but some of the cars ive seen that imitate it for the street are just silly.