Who's running 15's ?

Running 255/60R15 on rear and 205/70R15 up front (a bit of a taller tire up front creates less rolling mass, which means its easier for the rear end to push the car forward) all four rims are 15x7.On a all stock suspension. I tried 275/60r15 on the rear before but the just rubbed the leafs and left me with under a 1/4 inch on the wheel well.