matt33

adi_d

I used both on my 997.2 GT3 with 18 and 19 wheels. The time difference between the two is probably less than .5 seconds, so performance wise on track almost identical. NT01 are far more cost effective (~$1100 a set vs. ~1600 on cup2). NT01 is also a lot less sensitive to temperature differences and can be fairly consistent throughout the session. On the flip side NT01 is horrible on the street, like sitting in a drum, and useless in rain. Again, from my experience both would heat cycle out well before cords, with NT01 lasting a bit longer (20-25 HCs vs. 15-20 on cup2). Of course this is all dependent on how fast you go and how hard you push your car. Essentially NT01 is more cost effective while cup2 is a newer and better tire.

From what I can see these days, most people go for the Bridgestone RE71R, which has cost effectiveness of NT01 and sophistication of Cup2.

Difool

matt33

Have you both found the RE71R to be more consistent through the tread life than the SC2?

Not knowing when the SC2 is going to start falling off is the real issue I have. At $1600 a go, I cant say replacing them too early excites me, but at the same time having confidence they will be somewhat consistent through the next track day is also important. Very tricky!

Thanks for sharing your experiences.

Matty

Difool

I found the RE71R tires to be pretty consistent through their life. If they have a weakness it's heat. Overcook them and it's hard to cool them down, and if you don't they will wear very quickly.

matt33

Interesting. And what pressure do you target hot on the RE71R? With the SC2 I am targeting 32F/34R and found they get greasy quickly at just a few PSI higher than that.

multi21

Before I started to trailer, I would drive to the track on the NT01 and although loud, they were fine and never cycled out. In fact, they got better and better as they got down to the cords. I've got a set of R888R that I'm trying out now and they seem to be equal to the NT01 so far, but haven't use them up yet. The old 888 would horrible and would cycle out with half the tread still on the tire. Can't speak to the RE71 as they don't make sizes for my car but have heard great things about them.

gman3280

I'm running the 71's on my CS. 19's in stock sizes. They grip well but they don't handle heat and that causes the pressures to spike on track significantly. I'll start out at 27 psi and I pull off when they get to 40+psi. This is in a 20 minute session.

Difool

alexaqui

On a lighter car (E36) I've had good luck targeting 37/38 psi hot. Any lower and they would roll over the edges (Bridgestone has the markers on the sides to indicate where that is). If you do not overdrive the tire they are very predictable and seem to last a long time (e.g., have seen people take them down to the cords).

breljohn

Before I switched to slicks, I was running NT01s.
Amazing tire

PhillyGT3

on my 997.1 Gt3, I target 29 front and 32 rear (245/35/19 and 305/35/19) and it seems to work well on my SC2s. I will say that after 20-22 sessions, I need to replace them as I feel like they have heat cycled out. This is a first for me as the treads seem fine.

I feel your pain I guess is what I am trying to say!?