they have pretty low quality. they have egged and warped just like other low end wheels like rota's. if its for show or just daily use I'd say they would be ok if you just want cheap looks.

For use on the track where they will be pushed, I would not trust them in a heart beat. Not only is the unsprung mass for the size really shitty, you will be going through more brake pads and there build quality is horrible so your always wondering if they will fail on you. Your better off using a Z33 track set than you are sport max's.