Installing mud flaps-safe to drill holes?
Hi everyone, I hope I'm posting in the right place. I want to install mud flaps on my wife's car. The front has pre-drilled holes so that is of no concern to me, but the rear doesn't. I know that to install them I will have to drill holes in the real fenders, but will that lead to rust growth? 99% of instructions say to drill holes and they don't mention rust, however the odd person on the net says they have a car that had mud flaps installed and rust began where the holes were drilled. I don't know how old their vehicles were (it's my understanding that older vehicles didn't use galvanized steel and thus were more prone to rust). I'm just wondering if I should be concerned at all or if I should somehow try to seal the holes on both sides (if possible) after I screw in the flaps. I'm not an auto expert but I like to do basic things (such as this) myself, so I thought I would ask in hopes that someone more knowledgeable than me would know.
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