New York has NO regs concerning flares covering tires on non-commercial vehicles. You must have side marker lights but that's it. Amazing, but true considering New York is such a nanny state; check the Motor Vehicle statutes and see for yourself!
They are convex mirrors so they present a pretty wide field of view. The mirror part also pivots in its mounting "cup" so it's totally adjustable. I have no problem with them. Even the offside mirror works well.