I've had both 3500 single tire rear axle and dual tire rear axle.. I prefer the dual all day long.. as to parking I've never had any problem parking the dually but I MIGHT have to walk a few extra steps.. but if this is your daily driver then the single tire works fine.. specially at that weight... but I sure think the dually looks WAY better... I drove my dually to work for a while and never had any problems parking