You know i have never heard of that i mean if you have a lifted truck with like 40" tires on it yeah you have to have mud flaps but even them hardly anyone uses them. But asfar as dually's i have never heard of it we have stupid laws like we have to have a front plate,tinted windows,speed limits lol you know shit like that.
pig rig
+1y
back to your question, I think the mud flaps would draw your eyes to the fact that your wheels hang out 2"