Autocrossing & Roadracing Suspension Setup for Track Corvettes, Camber/Caster Adjustments, R-Compound Tires, Race Slicks, Tips on Driving Technique, Events, Results
Sponsored by:
Sponsored by:

Help: Michelin PS4S or Nitto NT-01 for HPDE & Street Use

Old 05-12-2018, 05:11 PM
  #21  
apex26
Racer
 
apex26's Avatar
 
Member Since: Jan 2013
Posts: 470
Received 57 Likes on 47 Posts
Default

Originally Posted by anth115
Hey everyone,

It's that time of year again and I think my 2006 Z06 deserves some fresh rubber. My questions and some background info are below. Please share your feedback!

Background info:
- I drive 3-5k km per year (2-3k miles) which includes 4-8 HPDE days at Mosport (and hopefully Watkins Glen this year!). The street mileage includes everything from twisty backroads to 1hr highway drives to the beach. I want to keep my yearly mileage up to feel I'm getting good use out of owning this car.
- I'm currently on oem sized PSS made in 2013. I've done ~6 trackdays on these tires last year (total of ~10-12 days between this car and my M3). They have tons of tread left but they feel hardened and lack grip, so I want to upgrade my tires and need your help to make the best choice.
- I realize this is a situation of compromise, so to help understand my priorities, I'd say durability/cost effectiveness is more important than the absolute lowest laptime. There is a lot to learn with this car and I want my next tire to help facilitate that over the next few summers.

Questions:
1. Based on my usage above, do you think the PS4S or NT01 will be better suited for me? I don't drive this car in the rain.
2. Do you think the PS4S will get killed on the track/the NT01 will get killed on the street? I've only clocked a ~1.37 at Mosport on these current PSS to provide context.
3. The NT01 has been around forever while the PS4S uses newer technology. Do you think this narrows the gap that usually exists between these classes, or not really? The Michelins will cost me $200 CAD more than the Nittos.

Thanks in advance!
Anthony
Last year I ran NT01's on dry days and kept a set of Michelins for wet days. The NT01's were a lot more fun to drive on the track, but incredibly noisy! One NT01 picked up a screw in the pits, so I had to default to the Michelins. They are a great street tire, but not nearly as fast as the NT01's, and driving aggressively on a warm day makes them get greasy. People say the NT01 is old tech, and there are better choices now. Maybe it's the wrong question--seek an alternative to the NT01 as mentioned above.
Old 05-12-2018, 07:37 PM
  #22  
Millennium FRC
Racer
 
Millennium FRC's Avatar
 
Member Since: Jan 2016
Location: Austin TX
Posts: 280
Received 21 Likes on 20 Posts
Default

Originally Posted by dparm
I wouldn't street drive NT01s. You'll chew them up way too fast and it's far too risky if there is a sudden downpour or whatever.

Stick with the PS4S or PSS for dual-purpose use.
Absolute nonsense. NT01's and R888's are fine on the street in a daily driven vehicle. I've daily driven R888's and currently daily drive on Michelin LeMans style slicks. I've driven in the rain many times and even in snow.
The following users liked this post:
fruitsalad (05-13-2018)
Old 05-12-2018, 08:35 PM
  #23  
blueray16
Burning Brakes

 
blueray16's Avatar
 
Member Since: Jun 2015
Location: Central Jersey
Posts: 1,101
Received 471 Likes on 279 Posts
Default

FWIW NT01 was my preferred track tire on my supercharged Mustang Cobra. I would drive them to and from the track with no issues... except they are very noisy! For that reason alone, never considered the NT01 as a street tire.
They did well on wet track with full tread, got even better on dry tracks as the tread disappeared.
I have a new set of R888R's for my C7 Z51 this season.
Old 05-12-2018, 10:39 PM
  #24  
Quickshift_C5
Melting Slicks
 
Quickshift_C5's Avatar
 
Member Since: Sep 2006
Location: Iowa
Posts: 2,717
Received 141 Likes on 120 Posts

Default

Originally Posted by wtb-z
Sure, they're a track tire. A slow track tire. New street tires like Rival S, RE71R are easily faster than the NT01. Even something slower like the RS4 was faster for me.
No, we'll have to disagree.

Last edited by Quickshift_C5; 05-13-2018 at 12:10 AM.
Old 05-13-2018, 05:36 PM
  #25  
BrunoTheMellow
Tech Contributor
Support Corvetteforum!
 
BrunoTheMellow's Avatar
 
Member Since: Jan 2015
Posts: 5,586
Received 1,395 Likes on 999 Posts
Default

Originally Posted by Millennium FRC
Absolute nonsense. NT01's and R888's are fine on the street in a daily driven vehicle. I've daily driven R888's and currently daily drive on Michelin LeMans style slicks. I've driven in the rain many times and even in snow.
Daily driving those tires is a waste of money. I don't daily my C7 (I drive 2 days a week) and I even change from r888r to pss for track days. It takes 45 minutes to change all 4 wheels and all 4 brake pad sets. Worth it.
Old 05-14-2018, 02:19 PM
  #26  
NTMD8R
Melting Slicks
 
NTMD8R's Avatar
 
Member Since: Sep 1999
Location: Richmond, BC, Canada
Posts: 2,305
Received 83 Likes on 68 Posts

Default

How about considering NT05 ?
Old 05-14-2018, 02:47 PM
  #27  
bellwilliam
Instructor
 
bellwilliam's Avatar
 
Member Since: Dec 2017
Posts: 107
Received 11 Likes on 8 Posts
Default

NT05 is few steps down in terms of track performance...
Old 05-14-2018, 07:40 PM
  #28  
Citation
Racer
 
Citation's Avatar
 
Member Since: Mar 2016
Location: Sayre PA
Posts: 372
Received 123 Likes on 74 Posts
Default

Originally Posted by BrunoTheMellow
Daily driving those tires is a waste of money. I don't daily my C7 (I drive 2 days a week) and I even change from r888r to pss for track days. It takes 45 minutes to change all 4 wheels and all 4 brake pad sets. Worth it.
Agreed. I am currently running RE71r on my C7 Z51. Those can be scary in any serious amount of rain on the street where they have things we call puddles. The RE71r are also extremely stiff sidewalls for a street ride.

I put the PSS back on for the street, or better yet I previously had a set of Bridgestone S01 non-run flat which have a much improved ride versus the PSS.
Old 05-14-2018, 07:41 PM
  #29  
NTMD8R
Melting Slicks
 
NTMD8R's Avatar
 
Member Since: Sep 1999
Location: Richmond, BC, Canada
Posts: 2,305
Received 83 Likes on 68 Posts

Default

Yes, but the OP also said
Originally Posted by anth115
It’s a shame that none of the newer 200tw tires seem to come in c6z sizes, as I'd love to run an re71r or something as an ‘in between’ step.
So, since the NT05 is a 200 TW tire, I thought I'd throw that into the discussion.
He could conceivably use an NT05 as an "in between".
Old 05-14-2018, 07:58 PM
  #30  
Nitrobullitt
Advanced
 
Nitrobullitt's Avatar
 
Member Since: Jul 2015
Location: CA
Posts: 58
Likes: 0
Received 9 Likes on 9 Posts
Default

For me the NT05’s were good for like 2 laps a session and then would super greasy. A good street tire though.
Old 05-14-2018, 08:01 PM
  #31  
NTMD8R
Melting Slicks
 
NTMD8R's Avatar
 
Member Since: Sep 1999
Location: Richmond, BC, Canada
Posts: 2,305
Received 83 Likes on 68 Posts

Default

Nitro,
so maybe the NT05 is a good autocross tire ? (short times for each run)
Old 05-14-2018, 08:07 PM
  #32  
Nitrobullitt
Advanced
 
Nitrobullitt's Avatar
 
Member Since: Jul 2015
Location: CA
Posts: 58
Likes: 0
Received 9 Likes on 9 Posts
Default

Probably would be great for autocross
Old 05-14-2018, 08:18 PM
  #33  
bellwilliam
Instructor
 
bellwilliam's Avatar
 
Member Since: Dec 2017
Posts: 107
Received 11 Likes on 8 Posts
Default

200tw doesn't mean it is a good tire. it is just a treadwear rating (NOT standardized). cheater 200tw tires like RE71R acts more like a 80 treadwear if you are comparing to traditional R-comp like 100tw NT01/RC1/R888R. Ignore the number completely.

although most cheater 200tw tires do overheat pretty fast, as most are designed as an autocross tires (needs to get up to temp within seconds). most 100tw R-comp is better at handling heat, but still get its *** kicked on the first lap or 2, depending on ambient temp.

and NO, NT05 is not good for autocross. it is a street tire, NOT a performance (as in HPDE/autocross) tire.

Last edited by bellwilliam; 05-14-2018 at 08:20 PM.
Old 05-14-2018, 09:22 PM
  #34  
Nowanker
Melting Slicks
Pro Mechanic
 
Nowanker's Avatar
 
Member Since: Nov 2013
Location: Ex DPRK, now just N of Medford, OR
Posts: 2,908
Received 732 Likes on 542 Posts

Default

Originally Posted by NTMD8R
How about considering NT05 ?

They seemed like a good idea at the time...
Old 05-15-2018, 12:17 AM
  #35  
Millennium FRC
Racer
 
Millennium FRC's Avatar
 
Member Since: Jan 2016
Location: Austin TX
Posts: 280
Received 21 Likes on 20 Posts
Default

Originally Posted by BrunoTheMellow
Daily driving those tires is a waste of money. I don't daily my C7 (I drive 2 days a week) and I even change from r888r to pss for track days. It takes 45 minutes to change all 4 wheels and all 4 brake pad sets. Worth it.
Why is it a waste of money?

Last edited by Millennium FRC; 05-15-2018 at 12:19 AM.
Old 05-15-2018, 12:26 AM
  #36  
Quickshift_C5
Melting Slicks
 
Quickshift_C5's Avatar
 
Member Since: Sep 2006
Location: Iowa
Posts: 2,717
Received 141 Likes on 120 Posts

Default

Originally Posted by Millennium FRC
Why is it a waste of money?
Because he likely thinks they burn up too fast, and you're uselessly burning up the tires quickly on regular drives.

I've had R888's on my boosted ZO6 for a long time. I think this is their 4th year. The car sees 3k miles a year maybe. It would have been a waste of money to buy anything else. Just depends on your situation and if it's your only car.
Old 02-05-2019, 05:00 AM
  #37  
okaythen
Melting Slicks
 
okaythen's Avatar
 
Member Since: Oct 2004
Location: Nevada
Posts: 2,151
Received 166 Likes on 148 Posts

Default

Got the 4S couple weeks ago, might try it out in a HPDE next month. Does anyone know how many heat cycles it can do? I use 4s for DD too so I was wondering.

After maxing out heat cycles it just not as good at the track right?, but DD and drag strip should still be ok ?

Get notified of new replies

To Help: Michelin PS4S or Nitto NT-01 for HPDE & Street Use

Old 02-05-2019, 08:28 AM
  #38  
MatthewMiller
Le Mans Master
 
MatthewMiller's Avatar
 
Member Since: Aug 2015
Location: St. Charles MO
Posts: 5,694
Received 1,704 Likes on 1,290 Posts
Default

I might have missed it if someone else recommended this, but how about Continental ExtremeContact Speed tires? They come in exact C6 Z06 sizes. They are also pretty fast - about a second off Rival S or RE71R tires on a typical autocross course. And they are the go-to choice for wet autocross events. The only thing they aren't recommended for is below-freezing temps.
Old 02-05-2019, 08:37 AM
  #39  
anth115
Racer
Thread Starter
 
anth115's Avatar
 
Member Since: Jun 2012
Posts: 271
Received 19 Likes on 16 Posts

Default

Originally Posted by okaythen
Got the 4S couple weeks ago, might try it out in a HPDE next month. Does anyone know how many heat cycles it can do? I use 4s for DD too so I was wondering.

After maxing out heat cycles it just not as good at the track right?, but DD and drag strip should still be ok ?
I don't think there's a hard and fast rule of exactly how many cycles because the tire degrades gradually so distinguishing between good and bad is a bit subjective.
They can and will heat cycle out though, but you can maximize their useful life by:
- having a proper alignment with good camber/toe to keep the tires cooler/flatter on track
- limiting wheelspin/donuts etc. on the street
- keeping an eye on pressure settings on the track/street to help the tire do its thing

And once they do get past their prime, they'd be suboptimal for all sorts of performance driving aside from roll racing where grip is less of a factor.

Lastly, use em while they're fresh! They'll degrade over time even without being driven, so you may as well enjoy them while they're in peak shape.
Old 02-05-2019, 08:43 AM
  #40  
anth115
Racer
Thread Starter
 
anth115's Avatar
 
Member Since: Jun 2012
Posts: 271
Received 19 Likes on 16 Posts

Default

Originally Posted by MatthewMiller
I might have missed it if someone else recommended this, but how about Continental ExtremeContact Speed tires? They come in exact C6 Z06 sizes. They are also pretty fast - about a second off Rival S or RE71R tires on a typical autocross course. And they are the go-to choice for wet autocross events. The only thing they aren't recommended for is below-freezing temps.
Has there been some good documented results with this tire? I remember there was a lot of hype around them when they launched but obviously not many independent reviews. From what I did hear afterwards, they were a bit slower than the Michelin PSS/4S which itself is a good bit off the Rival/RE71R rubber. I agree they'd make a good rain tire and the price is attractive if they can live up to full 20 min HPDE sessions.

Also, to update to my original post, I went with the PS4S again as they were easier to get in stock, obviously more street/weather friendly, and I felt they were a better match for my stock brakes and stock suspension (oem leafs and DRM Bilsteins). While they're definitely not R-comp fast, I've been very impressed with them so far and instantly cut 2 seconds off of my 1:3x laps around Mosport, coming from my old set of PSS. If I keep the car for track use, NT01 will be my next tire though.

Thread Tools
Search this Thread
Quick Reply: Help: Michelin PS4S or Nitto NT-01 for HPDE & Street Use



All times are GMT -4. The time now is 07:29 AM.