Buying new rims for my car?

I drive a 2002 honda accord coupe I have 15x7 motegi sp10's on there as of right now I'm looking at avid 1 av-12's which are 16x8 but everywhere i go that has the ability for you to check if it fits your car says they won't is there a reason for this?

They don't fit. Probably too wide for the fender or the offset just doesn't work with the width.

Check on tirerack.com for the compatability chart.