F on a tire is not the size. In fact I have never seen F on a tire to designate anything.
That is NOT a tire size. -The size is a much longer series of numbers and letters.
the size of the tire, the model, when it was made
Tire size 30x10.5x15?
numbers mean the size of the tire,the size of the wheel they will fit on and the width of the tire.also found on all tires are a serial number
It is how big you want your tire to be its to big or to wide.
195 65r 15 is the tire size. 65 is width and 15 is rim size
It means that the part of the tire that is in contact with the road is 205mm wide.
It means it is a radial tire with 70 aspect ratio.
specification Speed rating.
Speed Rated
Click the link.