FWD is known to be harder on tires. Braking, accelerating, turning, while carrying the weight of the engine.
To some degree, you can mitigate this with frequent tire rotations. I say to some degree, as the tires will still wear, it's just that you won't wind up with half worn tires on the rear with brand new ones up front. Many (most?) shops these days will refuse to do this, or at least balk at this, due to liability concerns (you might lose control due to the different tread depths and thus traction in adverse conditions) (most cars are set up to understeer but now you might be neutral or more prone to oversteer). You could just buy tires in pairs, putting new onto the rear and moving the half-worn tires up front, but I'm not sure that there is a cost savings there.
Lastly, if your driving involves many turns, it may be the nature of the beast. Turning wears on tires.