Done.
I see where you disagree. You call these "fantasy tire sizes" because I translated the numbers that he gave into the industry standard and they're not always precise across brands...is that right? I guess I was overthinking it.
He asked which brand we preferred and you didn't have anything to offer on that? Hmm.. so I DISAGREE with you there.
In any case, the thing of value that I tried to offer was the often forgotten consideration of the contact patch area. Going to a shorter or taller tire, even at a the same claimed width, will have an affect on this.
50 series tire of a given width/ID offers a patch with a given length
60 series tire of the same width/ID provides patch with a greater length and therefore greater contact patch area.
No, the "traction benefit" is not going to have a linear correlation between contact patch area and friction but area
is relevant.
https://www.tirerack.com/tires/tiretech/techpage.jsp?techid=10