Fit System 3891 Deluxe Universal Clip-on Trailer Towing Mirror

Fit System 3891 Deluxe Universal Clip-on Trailer Towing Mirror

Amazon Product Link: http://amazon.com/dp/B001AJH1HK/?tag=...

New ratchet lock system
Adds the extra vision to tow wide loads without interfering with your existing mirror
Fit all mirror up to 11 1/2 inch tall. The mirror head is 5 inch x 8 inch with a viewing area of approximately 5 1/8 inch x 7 ¾ inch. The mounting bracket area is approximately 4 ½ inch x 11 ½ inch
Sold individually
Mirror Frame Color: Black
Clip-on towing mirror with new ratchet lock system. Extra large mirror adds the extra vision to tow wide loads without interfering with your existing mirror. Adjustable to fit most mirrors. Each.

Top reviews from the United States
Works on BMW X3 Mirrors
These add-ons seem made mostly for trucks so I wasn't sure how secure it would be on an X3 mirror with a curving top. It turns out they've very secure and with minimal wind noise -- none that I could detect with the windows up at 65mph. Very stable with no vibration and the mirror itself is on a swivel mount that is quite stiff -- good since it doesn't move around with wind and bumps. They were still very secure after 6 hours of driving.