What is wearing the inside of the front tires?

Contact alignment shop for an appointment.

To elaborate on Pushrod's thoughts, your wheel alignment is composed of 3 main angles - camber, caster and toe. "Pulling" with a straight steering wheel is usually caused by caster being off from your right wheel to your left. Tire wear can be caused by extreme camber angle issues, but much much more likely from toe that is off -- and this can happen even with no pulling. A proper wheel alignment will resolve this issue, or will identify further faults that require correction.