Originally Posted by KnP
What about mud flaps on the TV?
Mudflaps at the wheel wells offer some advantage. The full width rear bumper mudflap like the hula skirt would work the best. We have to consider that other vehicles are also contributing to flying road debris. It's the most common cause for broken windshields.
I just took some measurements. Our TV has OEM plastic fitted mud guards on all four wheel wells and we have step rails. The rear guards have 12" clearance to the pavement, a considerable gap for rocks pitched off the rear tires. We tow a cargo trailer with a 16" diamond plate across the lower front. The trailer has one small, but noticeable, rock dent above the diamond plate. Not bad for pulling a 7' wide wall for 36,000+ miles over a 10 yr period. That's including a lot of construction zones and some gravel roads.
I do believe that the diamond plate has done a remarkable job of protecting the bottom 16". Considering the trailer frame is 12" off the road surface, the diamond plate it protecting the trajectory zone of anything off the rear TV tires.
I refinished the trailer a year ago. There were a lot of minute chips across the entire front, probably from bugs. The only real way to prevent this is to park it in a garage. And that's not going to happen.
Our 2500TS has mudflaps that are not as wide as the duallys. We tow a 23' boat trailer. Our goal this year is to change out to wider mudflaps to protect the underside of the RV and a hulla skirt flap across the rear bumper to protect the boat or future toad.