I had good results from ones similar to these on my Toyota Tacoma...
https://www.amazon.com/Fit-System-38...dp/B001AJH1HK/
I could see cars closer than 200' on both sides with an
escape 21 behind me.... the
Escape is a little over 7' wide, I think. With my 6' wide
Casita, I didn't really need mirror extenders with the Tacoma.