1515 2200kv heat issues in buggy

[kingdomracer]

I run the 1512 1800kv and MMP w/Polyquest 4500mah 45c 2s in series for 4s in a Losi 8 2.0 buggy.
I have no issues with my setup and would highly recommend the batts. Motor temps are around 150*-160* after 20 min mains. I do like using nothing but 6.5mm bullets from Castle for ESC, Motor, Batts. I like knowing there is a much less chance of resistance when using the larger bullets as they keep their shape way better than smaller bullets and offer way more of a contact patch. Couldn't hurt to try.
I also use the Thunder Power's 3200mah/40c 4s batts in parallel and highly recommend these as well.