Why do Hondas wheel wells rust?
Second cause of rust is the rubber strip honda puts on the inner fender lip. People rip these off and throw them away because they retain water and road salt. These rubber strips also prevent rock chips which can lead to rust. So instead of taking them off and throwing them away, clean the whole area and inside of the strip & let everything dry, apply body sealer, silicone or similar calk to the inside of the strip and put it back on. Now you have protection from rock strips, and you’re keeping the moisture out.