PortimaoMystique
Try using Isopropyl alcohol on trunk area where spoiler is to be applied. Make sure the Isopropyl alcohol is at least 71%.
Hope that helps
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Al
2020 M340Xi| ZDA| ZDY| ZPP| ZPX| 1CR| 1PL| 688| 6NW| 2VFH|
Retired: 2014 328i
BMW CCA
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