Street or R-Compound Tires?

[thstone]

Ok, I've been going to the track regularly all year and have accumulated 16 track days thus far. I've been driving on low UTQG-rated street tires (~180). I should have about 22 track days by the end of the year and plan for a similar track schedule in 2012.

My car is a 1999 base model with stock suspension. Alignment is maxed out at -1.5 deg camber. Otherwise, all I've done is add safety equipment such as a racing seat, 6-pt harnesses, and a Brey-Krauss roll bar extension.

My goals are to continue to work on my driving skills and become more competitive in my class in time trial events (recently TT licensed). I'm thinking about a RoW030 or PSS9 suspension upgrade early next year (tax return money).

But right now, I'm thinking about making the move to an R-compound tire such as the Toyo R888. I would get second set of wheels for the R-compound tires and swap them prior to each track event.

Is this a sensible move or should I stay with the street compounds?