When you go straight fast (get a wide open area, >70km/h), do a sharp cornering by turning your steering hard. Try all these accordingly:
1) Just corner, no hand brake or foot braking. You can press on your pedel as hard as you turn.
2) Do a usual cornering, brake to slow down a bit then turn
3) Right before you corner, brake hard (just step on it), release the brake and turn
4) Turn and brake hard
Step 3 is the weight transfer. You car actually transfers weight from rear to front and if you do the hand braking, LFB correctly (in corect timing and sequence), you can actually make your car still and do 360 degree turn and all kind of stuffs.
Step 4 is the usual way of people turn, brake and lose control. be careful with it.
Step 2 is the usual turning way, step 1 is my way of doing some fast turning (not sharp turning though). You can used it to test how good is your tyres grip.
BTW, be careful on the road condition when you do all these tricks, if the road is bumpy and not flat, it can send your car flying out of the road easily.