This reminded me of something else to add regarding reading tires. I have had setups that left no unused strips without even being near race pace, and I have had setups that I could not possible use all of the front tire no matter what I did. I had one particular front that I trail braked all the way to a front end tuck, and still had unused portions of the tire on that side. Tires can be very misleading when you take them at face value.