I have running boards that incorporate a front flap of sorts. I added rear mud flaps, not so much for the mud, but for the gravel. Without the rear flaps it "sandblasts" the paint pretty badly on each rear rocker panel. The first ones I put on were a bit too short and the rockers got hit pretty hard.
Fender flares were on a Jeep I had a few years ago. They were the black synthetic kind that added about three inches of width to the fender width. This kept some of the mud from flinging up on the Jepp when driving in muddy roads. I would rather have running boards for where I live and what I do with my truck.
I don't have flaps on my SUV and, so far, have no issues with the rear rockers.
Last edited by stantdm; 10/22/19.
