That is for airplanes, not trucks. Best to stick with 0 degree timing as to not heat up too much.
not true... start-up stuttering and bad efficiency [including heat-up] can be seen [conditionally] when running 0 timing on 4+ pole motors... 10 degrees is the absolute minimum that i would run a 4poler, with 15 being a better suited timing setting for low-kv 4polers...