I've been using Leatherique for years. Picked up a 11 E90 M3 ZCP last week. Let it sit in the sun a few hours then cleaned off. Very nice results. Made a quick video.
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Current: 17 OG M2 / R8 Performance
Past Performance Cars: 01 M3, 05 M3, 06 M5, 08 M6, 08 M3, 11 M3, 13 M3, 15 M3, 911 C4S, 911 GTS, 17 M2,R8 V8, R8 RWS