Gran Turismo 7
54 Achievements
100-120h
PS4
By a Whisker
Won a race with a lead of 0.5 seconds or less.
68.1%
How to unlock the By a Whisker achievement in Gran Turismo 7 - Definitive Guide
You will more or less get this naturally as you keep racing. If for whatever reason you haven't, then I would recommend the pickup truck race on the Daytona circuit from around menu book 20. The pickup trucks are quite even matched so you will likely only win the race by 0.5 seconds or less. It's also an oval circuit so there is less room for driving variation.
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