What's a front rear fishtail? Fishtail = oversteer = rear steps out of line. Front plow = understeer = front wheels plow forward.

I'll assume you mean the oversteer. Yes, its quite easy to do so in the torque-rich engine and rear-biased AWD system in the Xs. By the way, braking while turning also creates oversteer. BMWs have CBC (Cornering Brake Control) to help out, but nothing defies physics.

I sometimes have fun in the X3 by shutting off DSC and taking wet corners a bit fast. It's more fun when intentional.