note, just my personal experience..
I have RT215 235/40/17 front and 255/40/17 at rear for daily use.
Tempe tyre, 235/40/17 for 250 ea, 255/40/17 for 300 ea, also available in 225 as well. price was paid 3 month ago?
Personal experence excellent with RT215, that's just the way I drive.. I have replaced my rear tyres with RT215 for about 5000km now..been to 4 track days (2 e/c, 2 wakefield), they are just doing better and better..and still got 80%+ of thread..mind you, car have some nice power at rear wheels, but hard to make them spin.
handling in the wet is awsome, maybe due to the large / deep water channel and block.
Consider the price paid, and the performance, I don't mind to use them again..