New Bordeaux DrifterG 15

I unlocked this accidentally shortly after switching the Driving Mode to "Simulation". (Found in the Game section of the Options menu)

I took a 90 degree corner at high speed and fishtailed, then fishtailed a few more times as I repeatedly over-corrected my drift. facepalm

With the Driving Mode set to Simulation the back end of your starting car (the Samson Drifter) is very loose and it's very easy to keep sliding around for five seconds. Doesn't need to be a "proper" drift or even one continuous drift, just fishtail around for five seconds and this achievement is yours.

If you're still having trouble, I've got a few more tips.

- Wait until late game when you've got more of the vehicle performance unlocks available. A faster, more powerful car can make maintaining a drift easier. The Samson Drifter rivals the Traviata when fully upgraded, but in a heavier, less skittish package.

- Look for the right area. I recommend the wide boulevards and major thoroughfares found in most districts; the open grassy areas of the Bayou; and the hilly, windy roads found in central Barclay Mills and western Frisco Fields. The former two provide ample room to slide around and the hills provide extra momentum when you drift down them.

- Wait until it rains. Makes every surface slicker.

- Shoot out all your tires.