off your paint if you like to drive your car like you stole it in the rain. When you hit a puddle at even 60 mph, the blast of water is tough on your paint. Also, you can personalize your Z with mud flaps... Nothing says class like yo sammity sam brandishing a pair of cartoon pistols in duplicate on the back of your wheel wells. Seriouslt though..if you DD your Z, rain or shine, they aren't a bad idea. Brand new mud flaps are almost blinding from behind due to the glare that they return to following drivers. A tailgating deterent. That's always nice