Discover end of car in tip (5)
I believe the answer is:
learn
'discover' is the definition.
('learn' can be a synonym of 'discover')
'end of car in tip' is the wordplay.
'end of' suggests the final letters.
'in' means one lot of letters goes inside another.
'tip' becomes 'lean' ('lean' can be a synonym of 'tip'**).
The final letter of 'car' is 'r'.
'r' inserted inside 'lean' is 'LEARN'.
(Other definitions for learn that I've seen before include "Find out - assimilate facts" , "Con" , "Study (at school?)" , "Discover - study" , "Read up on" .)