You can start posting your times so we can see what the cars can do in that track!!! It’s really slippery compare to Blue Moon so it’s fun
I had a leaderboard of what my cars did, tuned with nitrous, and I added notes about each car to it too. I stopped updating it 'cause no-one really cared, including me.
If you're interested, you can find it here - although keep in mind this was before the great bonanza of 1.17, so none of them really had special parts installed. If I was to update it today, I'd probably separate the cars with and without those parts.
BTW, is there actually a difference in grip between Route X and BMB?