Nitto NT05 getting slippery - FFCars.com : Factory Five Racing Discussion Forum
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post #1 of 12 (permalink) Old 04-25-2019, 02:05 AM Thread Starter
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Nitto NT05 getting slippery

I've noticed my 315/35 17 NT05s don't get near the traction they did originally. They have a little over 7000 miles and a bit more than 50% tread left, Mfg. date late 2015. They really worked well until about 5000 miles. Now with modest throttle they break loose(warm roads). Guess I'll be looking for something a bit more sticky before long. Thought I'd bring this up for discussion and get some expert opinions.


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post #2 of 12 (permalink) Old 04-25-2019, 10:07 AM
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Bob,
At 4 years old they're simply getting hard. Define "a bit more sticky". What are you willing to trade off for that? It all comes with a price...for example my NT-01s are more sticky but aren't well suited to wet or cool. Drag radials will hook better but aren't especially well suited for cornering. Identify your priorities and realize that most times a "+" in one area comes with a "-" in another.

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post #3 of 12 (permalink) Old 04-25-2019, 12:54 PM
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I'll be watching this. I'm in the same boat. Almost all road driving. My Continental Extremes are getting hard as well.

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post #4 of 12 (permalink) Old 04-25-2019, 03:00 PM
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Hi Bob and Seagull,

(Warning: Advice from a Greenhorn ahead. Take with a grain of salt) May I suggest that if you were happy with your tires previous performance, but now you are questioning your tire's ability to keep up to the standard with which you have been comfortable; go ahead and replace. It will give you the peace of mind you should have in your tire's performance.

Happy and Safe Motoring. Dave
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post #5 of 12 (permalink) Old 04-25-2019, 03:47 PM
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If wet or cold driving is not important to you take a look at NT01. 100 treadware AA traction designed for handling.

Tire are available in your size with a choice or 245 or 255 for the front.

Weather is good here most days so all my DD are on summer tires which are useless in the snow. Have all terrain & off road on the 4X4 trucks for the occasional snow & hunting.

The 555R currently on the car have been caught in occasional rain storms & are manageable as long as you are not making sudden inputs. Good down to 40*F which is about as cold as I will go anyway.

Choice coming up with 10,000 miles on current tires. A set of 555R for the rear (have spare 255X17 unused standard 555's for the front) or NT01 for all 4.


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post #6 of 12 (permalink) Old 04-25-2019, 07:48 PM
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UhOh

Pretty sure my NT555 have a 2007 manufacture date. How time flies. Might be time to think about replacement.
They do work awesome while the car is in storage for 7 months each year.


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post #7 of 12 (permalink) Old 04-26-2019, 08:31 PM
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I get about 8000 real, and 2000 a little more careful miles out of my NT05s. That is with 12+ autocross events a year. For me that is replace every other year based on tread wear. I decided on "one more event" on my rears and while on the track was breaking them loose on the straight at 70+ mph. I won't push them that far again, tread or not.

NT01s will be stickier, but I would bet on 4000 - 5000 miles for my type of use. The stickier a tire is, they age or heat cycle out faster. I would say 4 years out of NT05s is more than fair enough. Replace them. If you go to NT01s, I would bet that they would time out in 2 - 3 years regardless of mileage. I haven't tried NT01s yet. But I am in the more grip is better camp.

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post #8 of 12 (permalink) Old 04-26-2019, 08:46 PM
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Quote:
Originally Posted by Avalanche325 View Post
NT01s will be stickier, but I would bet on 4000 - 5000 miles for my type of use. The stickier a tire is, they age or heat cycle out faster. I would say 4 years out of NT05s is more than fair enough. Replace them. If you go to NT01s, I would bet that they would time out in 2 - 3 years regardless of mileage. I haven't tried NT01s yet. But I am in the more grip is better camp.
Right. My 01s are completely used up at 4 years and about 4,000 miles which includes probably 130+ autocross runs. Actually they were used up last year and I intended to replace them over winter but I got too busy doing cars for others so mine has not moved since September and will roll out of the garage for the first event of the year on Sunday still wearing them. Whatever...I'll still have a good time! Actually I'm thinking about trying the new Toyo r888r this time around---it's another 100 treadwear R Comp much like the NT-01.

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post #9 of 12 (permalink) Old 04-27-2019, 12:16 AM
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I've run them on my first build for 6000 miles over 5 years, they still have alot of tread left even after 4 Track Days at Laguna Seca, but yes they have lost a bit of bite. Still much better then any passenger car high performance summer tire!

I just purchased the "NEW" R888s for my 427 to get more grip, it had some Kumho high performance summer rubber that were 6 years old, and the tread started to separate all the way across the tire on the rears. Too much spinning? Perhaps. This newer design has a deep groove that runs completely around to improve water performance, but my old set didn't and were fine in the wet (the one time I got caught on the road). They handle and feel very much like the old ones, I like them alot!
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post #10 of 12 (permalink) Old 04-28-2019, 05:08 PM
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Quote:
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I've run them on my first build for 6000 miles over 5 years, they still have alot of tread left even after 4 Track Days at Laguna Seca, but yes they have lost a bit of bite. Still much better then any passenger car high performance summer tire!

I just purchased the "NEW" R888s for my 427 to get more grip, it had some Kumho high performance summer rubber that were 6 years old, and the tread started to separate all the way across the tire on the rears. Too much spinning? Perhaps. This newer design has a deep groove that runs completely around to improve water performance, but my old set didn't and were fine in the wet (the one time I got caught on the road). They handle and feel very much like the old ones, I like them alot!
Dave,

Regarding that you like the R888s alot, are you referring to Track day performance or "normal" driving performance? I have Kuhmo Ecsta tires that have about 6500 miles on them, so I'll probably be facing this situation shortly. I don't so track driving or autocross - just normal driving. Tire Rack classifies the R888s as Racetrack & Autocross only!

Thanks.


Steve

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post #11 of 12 (permalink) Old 04-28-2019, 10:03 PM
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Quote:
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Dave,

Regarding that you like the R888s alot, are you referring to Track day performance or "normal" driving performance? I have Kuhmo Ecsta tires that have about 6500 miles on them, so I'll probably be facing this situation shortly. I don't so track driving or autocross - just normal driving. Tire Rack classifies the R888s as Racetrack & Autocross only!

Thanks.
Hi Steve, hope your dong well.

The only negative on the street is they make a little more noise on the freeway without the deep tread. But, I've driven to Huntington beach 8 hours three times, and the tire noise is nothing compared to the exhaust and wind at freeway speeds.
Yeah I don't know why they make that statement, yeah in freezing weather the "R"Rubber can crack if driven on, but otherwise they are DOT certified and have plenty of tread depth to be safe in moderate rain...heavy rain..NO.
I have routinely drive to Laguna on my, do a track day, and drive it home.

Rumour is this tire and the Nitto NT01 are run on the same production line.
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post #12 of 12 (permalink) Old 04-29-2019, 05:14 PM
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Dave,

Thanks. Still trying to sort some stuff out - mostly EFI - but going well in general. Having fun - isn't that the bottom line!!

I'll probably get the R888's when it's time.

Steve

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