Are 225 70R 16 tires interchangeable with 225 65R 16?
Ideally you should have four tires on the car that match. With
that being said you can certainly replace your 65r tires with 70r
tires. The 70 refers to the width of the tire and a 70 is slightly
narrower than a 65. The lower the number the wider the tire.
I would not put 1 65 width tire on one side and a 70 width on
the other side of the car, they will wear unevenly.