outrun 2. First answer to come to mind and probably realest answer.
the racing game i've played the most of is srb2kart tho also. it's like miles above any other kart racer as far as control depth and nuance goes. best feeling drift system also, however I really like arcade sims and don't "need" drifts.
sega's racing stuff is like a huge fave tho. outrun 1, virtua racing, daytona, and sega rally racing are all tops for me, as well as ridge racer 4 by namco
WAIT NEW ANSWER WAVE RACER 64. Wave Racer 64 is like a god game. It's certainly the most beautiful racing game outside of outrun 2. Diddy Kong Racing is also like honestly so fucking good. Wonderful courses and vibes.