Talk:Research & Development/BMW S 1000 RR/@comment-176.158.17.199-20180107130334

According to this, lab 4 requires 31 keys for perfect run, across 3 days that is 11 keys/day so 4 sets/day. With 3 hours refill that seems doable without buying too many keys.

Most people may be able to use 3 sets during working days (1 in the morning, 2 in the evening), add a few more plays during the weekend, seems fair and not so time consuming.

That being said, it all depends how hard lab 4 actually is...