Hi,
İ know that a lot of people looking for vent mount which compatible with their f500.
After long research i found and buy an air vent mount that fully compatible with F500 cradle. This mount has very high quality.
This vent mount and the original pioneer tower suck mount has same manufacturer: Herbert Richter.
http://www.gpsforless.co.uk/product_det ... p?id=15403
https://www.expansys-usa.com/d.aspx?i=176458
İ bought it from expansys.