Can you substitute 215-70r15 with 215-75r15 size tires?

you can change tire sizes as long as you use the correct size for your rims in this case they are both 15's. However if you have four wheel drive you have to keep all four tires the same for it to work. (change four or change none) if it's two wheel drive keep the axles the same. (Keep the back two the same size and the front two the same size) Also 215-75 is taller make sure you have enough room to steer without hitting the frame.