Chalking tires.....

[99GrandTouring]

Guys tomorrow at the auto-x if it doesn't rain I'm going to chalk my tires.....
Now my understanding is you do this to see if the tire is "rolling over" my question is, should the tire roll over or not?
How do you know how far its supposed to roll over, and you use this to determine how much pressure to run correct?
Thanks!

[AutoX281]

optimally, your tires should roll a bit, near the edge of the tread. If they go beyond that, they've gone too far. You either don't have enough air, or are pushing too hard (or in my case, both!)

Not sure about other tires, but VictoRacers have little arrow/triangles near the edge of the tread. Ideally, you will wear right to this marker.

Remember, that this will only measure your hardest, tightest turn.

--Javier