Is a p 215 75 r 15 tire interchangeable with 70 tire?

Yes, a P215/75R15 tire can be interchanged with a P215/70R15 tire. The difference between these two tire sizes is in the aspect ratio, which is the ratio of the tire's width to its height. A P215/75R15 tire has an aspect ratio of 75%, while a P215/70R15 tire has an aspect ratio of 70%. This means that the P215/75R15 tire is slightly taller and narrower than the P215/70R15 tire.

In general, it is safe to interchange tires of the same width and wheel diameter, as long as the aspect ratios are within 3% of each other. In this case, the difference in aspect ratio between the P215/75R15 and P215/70R15 tires is 5%, which is within the safe range.

However, it is important to note that changing tire sizes can affect the handling, performance, and fuel economy of your vehicle. If you are considering changing tire sizes, it is best to consult with a tire professional or your vehicle's manufacturer to ensure that the new tires are appropriate for your vehicle.