For those searching for more knowledge. I am currently running a Tekin 4.5 w/ a Rs Pro. I added a 5800 Uf capacitor (aka novak glitch buster) to the battery side and this helped lower temps
On the uber hi traction we currently have at Raceworld Raceway (slicks/wheelies) my temps are under 160 after 8min main and 4 lights on the esc.

I did notice that the 550 motor seems to "heat soak" more and either requires a fan to cool off between rounds or lots of time.