In the dry west it's hard to write anything conclusive about wippers. Just after I took possession of the car in May we had a rain storm. While driving I noticed on the driver side a shmearing on the down side of the cycle. The dealer replaced with a new wiper assembly (rubber and rubber support not the arm). That stopped the shmearing. We haven't had a strong enough rain to criticize the speed. The wipper do seem slower than the prior 650. However the older models had a cam that shifted and accelerated the wiper as it moved across the windshield. That could be a difference which would affect a perception of speed.
2012 650i xDrive|Vermillion Red Metallic | Cinnamon Brown Nappa Leather | Fine Line Oak Wood Trim | ARS | 20" Wheels | Active Cruise Control | HUD | Night Vision | LED Lights | Heated seats | Heated Steering Wheel | Ski bag | Active front seats | Premium hi-fi system | Satellite radio | Plus more
Former ride 2010 Deep Sea Blue 650i