Racing: Cars are better / faster ... increase race duration?

[SRTracer121]

we still run 4 minute mains and heats but we also have 10+ classes on slow days. the nitros still struggle to make 4 minutes (its oval mind you so wot)

my spec traxxas titan12t powered bomber class car runs all day on a single 2s 5000mAh pack, im one of those punks who makes practice laps too we even ran a hundred lap race recently based on the aforementioned class and i only pulled maybe 5600 mah from the 2 packs total and most were at or about the same.

[Charlie don't surf]

Your Nitro classes are running .12's and can't make 4 min?