A surefire way to change dynamics is to adjust rear toe. If you feel the car is stable on entry (trail braking) then adjust to zero or even 1/16 out. Sounds crazy but I've found rear toe to be one of the most powerful tools in the chassis balancing tool box. Also, rake is real important as somebody already mentioned.
How old are your tires? I'm not a fan of the R888.
R888Rs have 6,000 street miles on them and 1 autox and 3 HPDEs on them so far.
2 Full seasons, still showing plenty of tread (For rcompounds). Stored over the winter in 60 degree storage.
Which is why I was curious about if they might be getting close to being heat cycled out just from driving around.
I don't trail brake the car at all, if I did, the back end might start to slide, or the car may still push.
Im not sure about 1/16 out on a track car, if I get below 1/8 in I have a lot of trouble.
No matter how many times you tell people that R888 are not the best and all of the 200TW autocross tires are better they still buy the R888 v0v
I am open to buying the RE71s next time around. I've heard good things about them, but it seems like (at least on heavier cars) they're easier to get greasy than most of the RCompounds and heavier cars are getting fewer heat cycles than a similar R-Comp.
It seems like all of these tires whether they're new 200 TW street tires or older R-Comps they seem to heat cycle out before wearing out, so the TW rating almost becomes a non factor.
But if guys have run both of them on this platform and like the Re71s more I'll prob pick those up next time.
R888Rs in the rain now are a bit sketchy. I may get 1 more season out of the R888Rs at most, so I'll be looking.
And while I'm looking, also thinking about just going to a 15/17 setup so I can get a 225 up front, and 245 or 255 (whatever I can fit out back). I don't particularly like the look of the Miata wheels or else that would be an easy choice.