Time for an R888 User Feedback Updated Thread
03-24-2011, 09:49 AM
#31
Rennlist Member
As it was mentioned, the best alternative is the NT-01 IMHO. Not that I have used it, but friends who used them were very happy, and they seemed to last a bit longer than 888s. Also, as far I know, the NT-01s are the same compound as RA1s with different thread design, all made by Toyo.
03-24-2011, 11:13 AM
#33
Three Wheelin'
Well, I called Toyo directly today to bitch and to see if there are any RA1s on the ground.
I was informed that RA1s in the 305/35r18 size have NOT been discontinued and will be made. They are aware of the "dissatisfaction" in the paddock, have taken a lot of "feedback", and have passed it on overseas. They also advised that in general the larger sizes will be favored over the smaller (so, for example, several 16" sizes have been discontinued). The problem is that they are Japanese manufactured; that rubber, the raw material, right now is in short supply; and the US of A is in competition with China and India. Passenger tires also take precedence for obvious reasons.
The short of it then is that the tires will be made, and will be available, but 'only God knows when'. Some good news, and some bad news. I plan to call Toyo again in 30 days for status. They advise that the factory will start production and then will advise the distribution arm. Typically once notified the time to the market is an additional 60 days.
I am checking now to see if any 'leads' given have the tires .. All I know. Thought I'd share..
I was informed that RA1s in the 305/35r18 size have NOT been discontinued and will be made. They are aware of the "dissatisfaction" in the paddock, have taken a lot of "feedback", and have passed it on overseas. They also advised that in general the larger sizes will be favored over the smaller (so, for example, several 16" sizes have been discontinued). The problem is that they are Japanese manufactured; that rubber, the raw material, right now is in short supply; and the US of A is in competition with China and India. Passenger tires also take precedence for obvious reasons.
The short of it then is that the tires will be made, and will be available, but 'only God knows when'. Some good news, and some bad news. I plan to call Toyo again in 30 days for status. They advise that the factory will start production and then will advise the distribution arm. Typically once notified the time to the market is an additional 60 days.
I am checking now to see if any 'leads' given have the tires .. All I know. Thought I'd share..
03-24-2011, 11:35 AM
#34
Rennlist Member
03-24-2011, 12:15 PM
#35
Three Wheelin'
^ Paul, I asked your question below re the NT01s to someone with a lot of racing and Porsche knowledge I very much trust, and was advised as follows:
"....the rolling diameter has to be kept with-in 4% (in either direction) for the ABS to work properly. You will have no problems running the Nittos, which by the way are great tires....."
So it would appear the Nittos are in play for us as well.
"....the rolling diameter has to be kept with-in 4% (in either direction) for the ABS to work properly. You will have no problems running the Nittos, which by the way are great tires....."
So it would appear the Nittos are in play for us as well.
i am not sure how/if NT01 will work on my 997 car - I need fronts to have smaller diameter than rears otherwise PSM will go crazy.
with 245/315 NT01 rear 315/30r18 are 25.35", fronts 245/40r18 are 25.55".
only smaller fronts are 225/40r18 but is is quite a stretch to run 225/315 combo.
or do i miss something here?
with 245/315 NT01 rear 315/30r18 are 25.35", fronts 245/40r18 are 25.55".
only smaller fronts are 225/40r18 but is is quite a stretch to run 225/315 combo.
or do i miss something here?
03-24-2011, 12:27 PM
#36
Rennlist Member
^ Paul, I asked your question below re the NT01s to someone with a lot of racing and Porsche knowledge I very much trust, and was advised as follows:
"....the rolling diameter has to be kept with-in 4% (in either direction) for the ABS to work properly. You will have no problems running the Nittos, which by the way are great tires....."
So it would appear the Nittos are in play for us as well.
"....the rolling diameter has to be kept with-in 4% (in either direction) for the ABS to work properly. You will have no problems running the Nittos, which by the way are great tires....."
So it would appear the Nittos are in play for us as well.
i guess it will be an another one of those 'experiments' to conduct on my own, if I decide to do that.
01-20-2012, 11:13 AM
#37
Drifting
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Bumping this thread. I am going to get some track tires and I have two different options for my BBS wheels. I was first thinking about r888 in 335-30-18 for the rear instead of 315-30-18. For the rear wheels I have the option of going either 12" or 12.5" wide but it's very tight so the 335s would not fit with a 12.5" wheel but probably with a 12" wheel. The 315s are a more safe bet and would fit both with 12" or 12.5" wide rear wheel. So basically I have three rear options:
1. 888s 335s on a 12" wheel
2. 888s 315s on a 12" wheel
3. 888s 315s on a 12.5" wheel
So the 335 will be very big and bulge a little bit on the 12" wheel, less stretched means less responsive and a little sloppy. The 315s provide less grip but the contact patch will be big for their size and the 315 on a 12" rim will provide great feedback since the tire is a little stretched and less sidewall flex when compared to the 335. Is a 12.5" wheel too wide for a 315 tire? It could work and the tire would be very stretched. Better than a 12" wheel? Probably not. Which of the three alternatives would you recommend?
In the front I will run 888s 265/35/18 on a 9.5" wheel.
I would love to run MPSCs instead but they are not available in these sizes.
Appreciate any feedback.
Have a good weekend!
1. 888s 335s on a 12" wheel
2. 888s 315s on a 12" wheel
3. 888s 315s on a 12.5" wheel
So the 335 will be very big and bulge a little bit on the 12" wheel, less stretched means less responsive and a little sloppy. The 315s provide less grip but the contact patch will be big for their size and the 315 on a 12" rim will provide great feedback since the tire is a little stretched and less sidewall flex when compared to the 335. Is a 12.5" wheel too wide for a 315 tire? It could work and the tire would be very stretched. Better than a 12" wheel? Probably not. Which of the three alternatives would you recommend?
In the front I will run 888s 265/35/18 on a 9.5" wheel.
I would love to run MPSCs instead but they are not available in these sizes.
Appreciate any feedback.
Have a good weekend!
06-09-2012, 01:04 PM
#38
Intermediate
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Since the thread has been revived... The guys at AIM at Sears Point have shared some updated info I thought worthy of repost. For the record I've been running NT01/NT55RII for the last year, first set of 888s going on Monday for a weekend at Laguna Seca aloong with JRZ RS 600/750 
[repost from www.aimtire.com]
The R-888 with the stiffer sidewall and softer undertread construction requires a bit less initial camber settings and WE BELIEVE increased (over the Ra-1) starting and 'HOT' tire pressures to provide a longer lasting and more consistent experience.
====================================== TOYO MOTORSPORTS - CANADA SUGGESTIONS:
VEHICLE WEIGHT.............STARTING PRESS...........HOT
_____less than 1776 lbs.......... 17-22psi........... 22-29psi
_________1776-2220 lbs.......... 20-26psi........... 24-32psi
_________2220-3109 lbs.......... 23-27psi........... 28-40psi
_________over 3109 lbs.......... 27-35psi........... 37-42psi
The correct initial (Cold or starting) air pressure is critical to achieve an optimum contact patch shape. Optimum starting pressures are determined by the TRACK, EVENT DISTANCE, CHASSIS TYPE AND SETUP, CHASSIS WEIGHT and DRIVING STYLE. So, the above pressure chart is RECOMMENDATIONS ONLY!
** Canada finds an increase in pressure from starting to hot of 10-12 lbs acceptable. Howeveer, it has been our experience that if the pressure should increase more than 10 lbs from start to hot one should start with a higher pressure. We've found that a 8 to 10 lb. increase from starting to hot pressure is best.
[repost from www.aimtire.com]
The R-888 with the stiffer sidewall and softer undertread construction requires a bit less initial camber settings and WE BELIEVE increased (over the Ra-1) starting and 'HOT' tire pressures to provide a longer lasting and more consistent experience.
====================================== TOYO MOTORSPORTS - CANADA SUGGESTIONS:
VEHICLE WEIGHT.............STARTING PRESS...........HOT
_____less than 1776 lbs.......... 17-22psi........... 22-29psi
_________1776-2220 lbs.......... 20-26psi........... 24-32psi
_________2220-3109 lbs.......... 23-27psi........... 28-40psi
_________over 3109 lbs.......... 27-35psi........... 37-42psi
The correct initial (Cold or starting) air pressure is critical to achieve an optimum contact patch shape. Optimum starting pressures are determined by the TRACK, EVENT DISTANCE, CHASSIS TYPE AND SETUP, CHASSIS WEIGHT and DRIVING STYLE. So, the above pressure chart is RECOMMENDATIONS ONLY!
** Canada finds an increase in pressure from starting to hot of 10-12 lbs acceptable. Howeveer, it has been our experience that if the pressure should increase more than 10 lbs from start to hot one should start with a higher pressure. We've found that a 8 to 10 lb. increase from starting to hot pressure is best.
