I just detailed my e82 135 about a month ago only using swissvax polishes and swissvax scandic shine's insignis v3. Since then, I give her a hand wash using swissvax car bath once a month and get a touch less car wash once every 4-5 days. Will recoat wax every 4-6 months. No swirls still!
2012 LeMans Blue Metallic 135i Coupé - SOLD
2013 Mineral Grey Metallic 335i Sedan - Returned
2012 Black Sapphire Metallic 135i Coupé
Still keeping it classy with a Clutch..