Hello,
Read up on it, but still a bit confused over the tire designation numbers.
As an example, let's assume a 225/65 R17.
Everything stays the same in the designation, except for the /65 in my examples below.
So,
a. If it was a /60 or a /70, (rather than the /65) these would also fit just fine on a 17 inch rim. True ?
b. If so, then what actually also changes; is it the O.D. then of the tire, slightly ?
c. Is it usually O.K. to vary tires on a car by having /60 or /70 rather than perhaps what came with it, the /65 ?
What implications ?
Thanks, B.