jimpastorius wrote:
Two important questions...how long has your daughter been autocrossing and what are her goals?
Her goals this year include "learning how to learn" a course (how to walk through a course, what to look for, what to put on a course map, how to review your runs/notes, how to mentally rehearse (both associated and dissociated) a course, etc.), learning how to transition a car from under power to braking to trail braking/turn-in to maximum loading to progressively adding power for track out and unwinding transition in the smoothest possible manner. She has a notebook with her other goals written out we went over, but I can't recall the others at the moment. Oh, one relates to learning how to do rich, detailed mental rehearsals of a course all through the day.
She's autocrossed twice on street tires in our old Volvo last year, and now this year she has done three events plus the chick's school in the 330i on the R-comps. Two years back she took the one day course at the BMW Performance Center and just a couple of weeks ago went back for their 2-day course. Her autocrossing this year really helped down there as she won 1st place in the auto-x competition part. She's had a lot on her plate this year since I've also been teaching her how to aggressively drive a manual transmission...that part (i.e. rev matched downshifts for those rare but critical 2-1 downshifts) is still early in the learning curve.
She's developed a pretty good feel for how the tires feel near the limit and beyond given her experience level. I've had discussions, classroom like, with her about how a tire works (three components of grip: deformation/mechanical keying, adhesion, ablation), what the tractive force versus slip angle curve looks like for street tires versus r-compounds, etc. Having her develop some understanding of how the tire responds near the limit on paper I think has really helped her on-course learning curve.
Anyway, to lessen the learning curve shock was one reason I went with the Dunlops, but I don't fully buy into the "r-compound worry" that a lot of people seem to have.

The Dunlops have been a nice intermediate step.
Chuck