Way Motor Works has been using these convex or wide angle mirrors and have to say they are great. These allow you to see your blind spots much easier to prevent that improper lane change. But that's not it, or WMW ones also have a slight blue tint to keep headlights from blinding you at night. We have used the euro version that MINI made, but they blind you and have a silly line in them which distracts me when I look at them. A very cost effective mod that you will use and notice everyday.