Jan Larsen
Premium
It changes the toe angle primarily, the temps less so. Changing toe to dead straight instead of the usual toe out decreases tire temps down the straight ever so slightly, but more important removes tire drag and wear on the inside of the tire caused by toe out. Its a win win situation obviously and a grey area the FIA hadnt specifically outlawed (until 2021), so its legal. Redbull's protest was a desperate try they probably knew would be rejected (quickly as it turned out).