> "There is a lot less grip at the beginning of a race weekend"
It can also be the opposite during a race, as tyre residue accumulates on the track, lessening grip in the most critical areas, often requiring drivers to change their line.
(To be clear, my question was a rhetorical one. I began to write a paragraph about that, and then another one... and then work brought me back from procrastination, so I deleted the incomplete stuff)
marbles (pieces of tyre) do not build up on the racing line. they build up off the racing line and thus are not a factor in "most critical areas". they are a factor if the driver has to go off the racing line. to defend, pass or avoid.
It can also be the opposite during a race, as tyre residue accumulates on the track, lessening grip in the most critical areas, often requiring drivers to change their line.
(To be clear, my question was a rhetorical one. I began to write a paragraph about that, and then another one... and then work brought me back from procrastination, so I deleted the incomplete stuff)