I got one too... you can do one of two things; 1) learn to drift in the arcade mode. you'd have to change your settings to simulation, turn off all assists, and traction control. It's soooooo fun once you get the hang of it. as far as I know, drifting is near impossible with the controller, you'd need a wheel.
or 2) buy a Variable Limited Slip Differential or VLSD. change you settings ESPECIALLY for acceleration. It will prevent your wheels from spinning out from underneath the car.
It really helps to know a bit about cars to tune them right. People run away from rear wheel drive cars, but if you tune them the right way, IMO, they are the best cars in the game. Alternatively, you can really f*ck up the handling if you don't know what you're doing. Lol. If anybody has any rear-wheelers you don't want, i'm willing to trade a FF. hit me up!!