I have 2014 Q60S Convertible. Gray 53k Miles. Bought a 2012 G37S Convertible Melbac First. Loved Both cars. Great Cars replaced convertable top motor on 2014 under warrantee other than that no problems. Keeping 2014 forever. PS convertible top was purchased by Infiniti from a vendor that also sold their top to BMW. So convertible top parts are the same from both Infiniti and BMW.
I have 2014 Q60S Convertible. Gray 53k Miles. Bought a 2012 G37S Convertible Melbac First. Loved Both cars. Great Cars replaced convertable top motor on 2014 under warrantee other than that no problems. Keeping 2014 forever. PS convertible top was purchased by Infiniti from a vendor that also sold their top to BMW. So convertible top parts are the same from both Infiniti and BMW.