The phrase "corner apex" refers to the highest or most important point of a corner. It is the spot where you make your turn during driving or where two walls meet at a sharp angle. Full definition
The faster you go in the ZR1, the higher the speed differential becomes at corner apex. (automobilemag.com)
«The front view is so good, corner apexes appear to pass right under your nose.» (automobilemag.com)
This is a motorcycling term describing the maximization of cornering momentum and accurate targeting of corner apexes while using virtually no brakes — and with absolutely no crossing of the double - yellow line. (automobilemag.com)