so i got an IRO crankset on sale for $50, and I don't want the 46T chainring because the set is for my winter beater and I have a 15T cog. I found a Sugino 39T chainring that's used a little bit, but it doesn't look like sharkfins. A question that came to mind is, would I get more/less use out of the chainring if I mounted it on backwards (assuming it was on the other way to begin with)? I can't decide if I would get more wear/less wear/no difference out of this. I think I'm just comparing it to skateboard wheels, where I powerslide a lot and turn my wheels around a lot to try and wear them down evenly...although skateboard wheels are not chainrings. Any ideas?