It's a very useful mod. I'm glad I did it. And I used this feature during some heavy rain driving through Ohio on the interstate. I think it helps in heavy downfall as well as fog.
2011 E92 l SSII l Fox Red l ZP2 l ZCW l ZCV l 19" l 6MT l DDC l EPS
2012 Toyota Prius C(my new daily).
2002 Nissan Pathfinder - 301.6K and Junked.
2000 Mitsubishi Montero Sport - Rolled & Totalled.
1995 Cadillac Fleetwood - RIP.