


M550 spoiler tape has water days after wash
I had spoiler installed on my 2021 m550i. I’ve had to have it reinstalled twice now due to water draining from the tape after a car wash. It doesn’t happen at first but slowly over time if I wash the car, water stays in the tape and drains slowly over the next few drives. I’m assuming it happens when I accelerate because it doesn’t happen when the car is parked. The tech that installed it has tried two different tape brands. He said 30 and 45 lb 3M tape. The spoiler stays on pretty well not really a concern of it falling off yet but the water issue is really annoying. I washed it Wednesday and I still had water streaks running down the bumper today, it’s now Friday. Any help would be appreciated.