With the staggered sports I can't rotate the tires. On the '09 335i I turned in I made it on the original tires with 41k miles on them but hit the wear indicators at that point. Over the course of the lease I had my share of "spirited" driving and drifting, but not to excess. So with reasonabe driving, you may be needing tires after the 36k miles but more likely you may not.
2013 F30 335i | Sportline | Imperial Blue Metallic | Black Dakota | 6-speed | HK | Cold | Premium | 19" Staggered Sports | M-Performance Exhaust
2009 E90 335i
2007 E90 328xi