[jmillet]

I run my R888s at 3.5 negative front camber with good results. The challenge with the R888 is hot tire pressure. I start them out cold at 36 psi front and 34 psi rear with the goal of achieving hot pressures of 45 psi front and 43 psi rear.
My experience is that with lower hot pressures the R888 tends to scrub off the outside edge of the tread rather than wearing evenly. Tire adhesion does not seem to be impacted by tire pressure because the R888 has a very stiff sidewall.
YMMV