Nitto NT555 front and NT555r rear safety?

[choate]

To me, The r compounds make the difference. Just so ppl don't mix them up.
I have had
555
555r
NT 01
Nt 01r
The 555 or just regular NT01 are not as good.
I am running some r's right now and they hook all of 640whp in second when a little warmed. They are also sketchy as f* if you get caught in the rain.

Same. I'm about 40hp less that you but I'm satisfied w the nitto R versions. And rain, in a cobra? Never lol