Board Thread:Game Discussion/@comment-29799506-20180216202957/@comment-31668816-20180217180832

Prange?? wrote: Rr3daniel wrote: Quite a few career series can be done without owning all featured cars: In EK,the Toyota and the 919 are needed to complete the series.
 * Battle Italia
 * Zenith
 * All Star Vendetta
 * Endurance King

The Toyota is required for a Hunter,an Endurance,and the TS040 Time Trial. As per the title of the thread:

"series that can be completed without owning every car"

Rr3daniel is correct, in that the two RSRs are not needed to complete the series.