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Try driving it with the mirrors folded in and see if it makes any difference. It also might not hurt to see about adjusting the latch where the door closes a little tighter against the seal.My dealer basically said that it's impossible,and that it's probably the the trailer tow mirrors causing wind turbulence.Ive checked all of the seals and they are good ,still can't figure it out .I called Ram customer service and opened a complaint.They said if more complanc they might do a recall on door seals etc.