 longest you've got to use two of those three in a race doesn't matter how many times you can use one and then the other and that's it that's called a one-stop strategy you only change once you can do three or four stops and change between all three if you wanted to basically you've got to get to the finish line quicker than your rivals and sometimes a few stops to the pit lane and a few quicker stints on those quicker tires will be the way to do that it's a bit of a chess game going on out in front to change those tires you have the pit stop and nobody does a pit stop