Nitto appears to have two competition road racing tires. The NT-01 and the 555R II.

What are the differences? I can't decide.

 

NT-01 is softer and is asymetric. You can rotate them across the car.
NT555R2 is a little harder and is directional. Can't rotate as easily.

If you're wanting a tire like this with a more daily driver friendly compound but that is still track worthy then I'll recommend the Falken RT-615.

If you're wantnig tires for the track only I'd go NT-01. It has larger shoulder blocks and more rubber for the contact patch.

 

I want a tire that I can use for both autocrossing and drag racing. I want the sticky rubber and the stiff sidewalls.

I'll be keeping my GS-D3's for daily driver duty, since I'm not afraid of rain.

 

a guy I know who drives awesomes has the nt01s up front and the 555Rs in the back and says its an awesome setup for corners and drag

 

I was kinda thinking that, but with 555R II's in the back.

 

a few of the autocross guys run nitto 555R II's.From what i've seen they have good life(last the whole season of autocross) as well as a whole bunch of daily driven use and runs down the track.

Have you considered Falken Azenis(unless that is the RT-615) They arent an R compound but they are also a popular amung the solo 2 crowd. Not sure how they do on the drag strip though.

 

RT-615 is the tire model.

Falken Azenis is like Saying BFG G-force. You have 4 different tires to choose from.

Just my preliminary thoughts on the RT-615 is that I like it over the KD. It hooks better cold and I have had no worries in the rain, but I didn't have any prob's w/the KD in the rain either.

IMO, they're definately worth a look. Plus you can pick them up for under $160/tire (in 275/40-17) from discounttiredirect.

 

I want a tire that's good both on the drag strip and the autocross course, so I was leaning towards the Nittos. I have not yet looked into the Falken's, but they're on my list.