I really love this game and all, but the drifting system is pretty bad, I suggest using a Shift to Drift, or StD System.
I think there are a couple issues but the drifting is mostly pretty realistic. The way weight shifts is off, you should be able to apply brakes to load the front tires for a transition. All of the cars are 4wd which is a bit different from a 2wd drift. Also I think the friction coefficient changes too much once the drift starts. Other than that starting a drift is pretty easy, just try a scandanavian flick or even just turn hard. There isn't any understeer so no problems losing traction haha