USING a brushless car wash is bad idea period.

My Mercedes SLK 350 AMG (invented the retractible hardtop on this model) would leak at 80MPH in a hard rain.

I did get a leak and it was a CPO, with 50K miles, they replaced the roof seal from the A pillar to the rear window, and it did the trick, these tops are tricky, lots of moving parts and pressure points..

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2007 335i|Space Gray|Coral Red Leather|6 MT|Sport/Premium/Cold Pkg|Logic 7|HK 300W|Xenon|Hankook V12's|M3 Rear Lip Spoiler|M-Tech Front Aero Spoiler| M-Sport Aluminum pedals| M-Sport Shifter| BMWCCA