Interesting. So, that begs the question: what's the ultimate KosmoKazi combination?
I don't have time to mess around with a sheet like that, but it would be cool to see what my perception is vs the reality of the times. Of course, the only way to get a truly accurate representation of that would be to run combos I don't like, haha.
(FWIW, I perceive that I'm fastest in Gr 4 overall, and that Spa, Big Willow, and Laguna are my best tracks.)
I'd also be interested in seeing you compare that spreadsheet vs. your sporting history on your GT profile. Are your best qualifying times correlated to best race performance?
By ranking, on the leaderboard, the road car races seem to be where I perform best. (the econobox races like Mini Cooper, Yaris, etc in particular). (Kind of surprised at this, but when I sort for top 10 leaderboard ranks, that's what pops out!)
But more so than any ultimate combo, knowing where the real target is for a Gr4 race event, compared to a Gr3 is what's helpful. I know that in Gr4 cars, I am at a K' Speed Score of 79 or so, but more critically, closer to 85 in the last six months. So I can estimate my real target for that week at 1.5% off the top 10 times, to be at the same competitive level as I have been racing, whereas the K' Target on the page only seeks to protect my overall rating.
Likewise, my Gr3 performance is a notch lower, so I can calibrate around that.
There are a lot of things I could mess around with to look in more detail, but that's the critical part, being able to sort out what to really target.
I think there is most very likely a smaller range for speeds in the Gr4 cars as the performance is easier to extract, while Gr2 and Gr1 cars separate the field more, in pace (and SF...).
There isn't enough data to say for sure, but it does align with my 'gut feel' that I'm fastest at Suzuka overall, regardless of the car type that week. (Comparing the Rank and Gap to Top Time as some tracks may have a narrower window... as someone else pointed out, the number of turns on a course has more impact on the 'spread' between drivers and gap to top times, than anything).
By the way, the red rank times on the sheet are the bottom three that stand to be replaced by new ones, if I exceed the K' targets for that week, just made it easier to spot them with a conditional format.
PS: I first started to really pay attention to this when
@Jwptexas and I met online, and he just shot past me on the DR boards... he mentioned 'you have to qualify better' and I knew he was right, so I wanted to start paying attention to what the time targets needed to be to start in the top 3 or 4 in Dailies... because he's right. It's critical, if you want to increase your DR running them (and avoid trouble with SR and idiots punting you). So to have an idea where I'd need to be, I started looking closer at the data. I know that if I match or beat my Target Times, I'll have a decent starting position. Though, in NA with a limited population of regular drivers (at least who are SR 90-99), and at 35k DR, it's harder and harder because I'm often in the 'top split' for Dailies, so the top four or five spots are going to go to the aliens who will paste me no matter what.
And finally: comparing my Alt, where I don't 'curate' my K' Speed Score, I just run what I want, sometimes scouting to decide whether to race on my main account for DR mining, to my main account, the K' Speed Score isn't that different... it's a pretty robust way to measure your pace, for most players, I think. Of course there are exceptions, who might approach the game differently and therefore generate a lot of different data, but it's been interesting to me that the Alt account is only marginally lower than my main one, where I have made effort to nudge it up and protect it.