I haven't put mine on. Originally I thought that the little bumps in the bumper when I got the car were dings from road rocks. Next time you're out on the road in SoCal or San Diego, count the number of cars without front plates, I would guess 20% or so. Also, with the current trend to put cameras on lights to catch people going through stop lights, it is becoming more common for people to take front plates off so they won't get caught. Could lead to more enforcement - probably not. California cops have fewer donut shops than in the east or midwest so they're usually not to be seen, to busy finding the closest shop.