The only people that want shore ratings are the people that are not brand loyal
or racers that think one is the same as the next.
you can not cross reference tires! the rims also play into account, how do you factor that in??
Why does it matter?
do you think a Jaco and a TRC feel the same on the track?
If you do then you have lots to learn!
Jeff hit the nail on the head, use his example of what to use and you will be fine.