In the week or so before a MotoGP race, crew chiefs and engineers pull up the data from the last race at that circuit and start work on a plan for the weekend. They then compare that to the tire allocation Michelin are bringing to the race, and try to get a jump on the game of figuring out which tires are going to work best. Motorcycle racing is a puzzle composed of many parts, and with just four sessions of free practice (three of which are partially lost to the pursuit of a direct passage to Q2), any pieces you can put in place beforehand can give you a jump on your rivals.
So crew chiefs and engineers pore over data, examine how tires performed, and decide what is likely to work and what probably won't. They make tentative choices about possible race tires, and draw up plans for practice accordingly: an attempt at a long run in FP2, a long run in FP4, and the option to revisit those choices during warm up on Sunday.