Weird....
Thread Starter
Junior Member
Joined: Sep 2014
Posts: 53
Likes: 1
From: Littleton Colorado
ML550
Weird....
So my employee today said to me that's the most dirty she'd ever seen my car. I did wash her on Sunday - then it snowed that night. Ug!
Anyways she asked me what the lines on the door were. I had no idea. Any ideas? I told her its the difference in metals. It's the exact same on the passenger side.
Anyways she asked me what the lines on the door were. I had no idea. Any ideas? I told her its the difference in metals. It's the exact same on the passenger side.
Member
Joined: Oct 2013
Posts: 224
Likes: 28
From: Western Europe
2017 GLS 350d
I was asking the same question when I saw your first pics a couple of weeks ago... Now the more I look at it, the more I think it comes from the fact that those are the spots where the door external panel has a mechanical contact with the inside stuff. Those spots are warmer when you drive and this means that in sub-zero temperatures, those spots are the only one not to be frozen. Hence the mud sticks more easily on the rest, as it freezes.
Junior Member
Joined: Dec 2013
Posts: 49
Likes: 0
2015 ML 350 Gas(Polar White). 2015 ML 350 gas(Lunar Blue). 68 mustang
That is where the door reinforcements are located. The lines are a material that is added between the reinforcement and door skin that has several functions. It prevents the door from vibrating and having a drumming effect during closing and driving down the road. It also asks as a support between the two as well. It looks like black tar foam. Good picture!
