MX621

i have a 2 year old set of hoosier R6 tires- prob 25% tread left and a very new set of nitto NT-05's, both tire choices are mounted on wheels. i have a auto-x this sunday and was wondering if it would be worth taking the R6's rather than running the NT-05 street tires. i know the R6 is a road race tire that requires some heat to work properly and achieve max grip, but will the R6 still out perform the near brand new NT-05 street tires?? i did a auto x back in june with the NT-05's and i thought they performed pretty well for a street tire. the event is a local porshe club, so no matter what tire i run i will still be in the same class, hell last event every car in my class ran R comps but me and one other car.

THANKS.....Phil

Dirty Howie

I will be alone on this ..... take the NT05


DH

0RAAMaudio

If the temp is going to be pretty warm and you get enough runs, etc to get some heat the R6 may be better but they are old and probably a bit hard by now.

The NTO5 is a great tire, I really like mine but no where near the grip I expected at an autocross a couple of weeks ago. It is a known slippery surface and I had to keep dropping air pressure but I know how to set up a car and mine has many suspension mods to make if faster, they just did not work that well for me.

I think I will like them better on the track when I finally get my roll bar done, on the street I am very happy with them.

Rick

grantar2

Nope your not alone. The NT05 should perform better unless your weather is hot as hell. The R6 are past thier prime if they are at 25% remaining, and they are track tires as apposed to the A6's which are autocross tires. The NT's should be more predictable and consistent at this point.

MX621

well weather says 71deg for tomoro, not exactly hot... what tire press should i be starting at with the nt-05's - 275/40/17 fr--295/35/18 rear? thanks guys!!

AU N EGL

NT05s the R6s will not have any grip.

AverageVetteNut

Yeah, I'd jump in the NT01 camp as well. Unless you got a long runway course and 2 r 3 drivers in the car on a summer day, you won't get the grip out of the R's that you'd want. The NT is a great all around tire for that.

good luck!

L98Terror

Take both and do a camparo...I say R6 if only one choice

Solofast

If you take the R6's start low in pressure somewhere down about 26/24 for your first run and bleed then off to keep them at about 28/26 as they heat up. The lower pressure will let the tire deform more and will make more heat. That will get you more grip and you might have a chance of hooking up and taking off. It takes grip (deformation) to generate heat, and heat to generate grip... If you run them harder you won't generate any heat and with no heat no grip...

0RAAMaudio

I was on 285/35/18 with 10.5 wide front wheels, 335/30/19 rears on 13" wide wheels and had to keep dropping air, I was down to 28 PSI hot and still not rolling over the edges so could of gone lower.

You may need lower if your wheel to tire width is not as mine as they provide quite a bit of sidewall support.

Temp was mid 70s and sunny and I started with 32 PSI all around and felt like I was on ice, it was that slippery (my car has trans and engine mounts, bushings, coilovers, adjustable sways, steering rack bushing, fairly aggressive alignment, etc....so it will utilize but can also work the tires harder than a stock or more stock setup)

Tire temps across the tread were near perfect once I got some air out of them after the first run then more each run was removed until I found a better balance.

Once the tires cooled at the end I had to add quite a bit of air for the 2 hour drive home.

With my setup which includes a built diff with lower ratios I just need more tire, the NT05 is just not enough, much slower than I thought I would be but I do like them still and will run them on at HPDE events, just not autocross again on them.

Rick

0RAAMaudio

It is fairly common to start taking off some of the edges on the center tread on these tires when pushed hard, I am not to concerned with that, still plenty of rubber on the road.

MX621

thanks for the reply's guys!! i think im just gonna stick with the NT-05, if it were warmer out i would try the R6's, but they are 3 years old with only little tread left. i just didnt know if the used R6's would be any faster than new NT-05's and with only 4 runs at the auto x that doesnt leave much time to experiment...

phil