The X5M is almost certainly tuned. It's a second behind the G80 in 100-200kmh.
https://docs.google.com/spreadsheets...9VQ/edit#gid=0
07.79 2021 BMW M4 Competition
08.01 2021 BMW M3 Competition
08.83 2020 BMW X6M Competition
09.14 2020 BMW X5M Competition
Here's a modded one:
07.59 2020 BMW X6M Competition G-Power 770 HP
That X5M was moving like an M5C - no chance it's stock.
07.16 2020 BMW M5 Competition LCI