This may sound like a noob question but is it ok for the front and the rear rims to have different concavity? I ordered the Avant Garde M510 beskpoke wheels and I am seeing that the rear wheels have significantly more concavity than the front wheels (barely any concavity). I thought that was a little odd but I don't really know much about wheels and in the past, I've only had stock wheels.
Wheels pic:
http://www.carid.com/images/avant-ga...w-5-series.jpg