I suspect it's your esc. I'm currently running the 160a toro and I believe the g force may be similar. I have an ORCA fan on it and the esc stayed within 40 degrees. The indoor track I was at was maybe 23 degrees.
Running g2 v10 6.5t motor, 20/87 gearing. My suspicion is that even if you had a fan the esc would still be very hot, maybe 20 degrees cooler... So I think there's something wrong with your esc. I would return it asap if you run out of ideas and under warranty. I am with mine with my toro...
I'm also running blinky on my esc, stock timing on can. Good to see ppl running the bmax 4 iii on carpet
