Toyo R888s, year two?
01-05-2009, 11:38 PM
#31
Rennlist Member
Thread Starter
my 944 spec car used to run RA-1's and now runs on R888's
<snip>
R888 is usable at full tread. With 6/32 and a much larger tread block they don't squirm for our cars. So no more shaving. As for overall speed and life I have noticed they are getting better as i drive them. Some of that is due to learning to use them and some of that could be due to same curing we needed on the RA-1. So far it is too early to tell for sure.
<snip>
cgfen writes: Thanks for taking the time to respond, (again), to another 888 thread. While searching, i've found many imformative, inciteful posts from you on this subject. you've probably answered itertations of this same question a dozen times.
Now if you raced a 3300 pound car, i could take everything you write as "gospel"
.
2) The R888 does not take well to sliding. The RA-1 could be abused and you could slide these tires around the track with no concerns. As a result many 944 spec drivers used this to great advantage by sliding the car to get optimal times. The R888 however seems to overheat much more and a slide will cause a loss of grip that can take multiple laps or even the entire session to recover. As such the R888 needs to be driven with a focus on grip rather than a toss in it and catch it approach. The drivers that like this style or have adapted to it quickly are seeing better results. Those that slide the R888 often feel they are very inconsistant during a run.
cgfen writes: HMMMMMMMMM very interesting. At my current level i rarely slide the car.
I am still trying to learn to drive "the grip", learning to drive "the slip" is in my future to put in the bag of tricks.
.
<snip>
R888 is usable at full tread. With 6/32 and a much larger tread block they don't squirm for our cars. So no more shaving. As for overall speed and life I have noticed they are getting better as i drive them. Some of that is due to learning to use them and some of that could be due to same curing we needed on the RA-1. So far it is too early to tell for sure.
<snip>
cgfen writes: Thanks for taking the time to respond, (again), to another 888 thread. While searching, i've found many imformative, inciteful posts from you on this subject. you've probably answered itertations of this same question a dozen times.
Now if you raced a 3300 pound car, i could take everything you write as "gospel"
.2) The R888 does not take well to sliding. The RA-1 could be abused and you could slide these tires around the track with no concerns. As a result many 944 spec drivers used this to great advantage by sliding the car to get optimal times. The R888 however seems to overheat much more and a slide will cause a loss of grip that can take multiple laps or even the entire session to recover. As such the R888 needs to be driven with a focus on grip rather than a toss in it and catch it approach. The drivers that like this style or have adapted to it quickly are seeing better results. Those that slide the R888 often feel they are very inconsistant during a run.
cgfen writes: HMMMMMMMMM very interesting. At my current level i rarely slide the car.
I am still trying to learn to drive "the grip", learning to drive "the slip" is in my future to put in the bag of tricks.
.
Craig, for your heavy C4S, MPSC's should not be discounted. The MPSC's reputation for being slick on the first lap or two are unfounded, IME, and with my 3000lb car. If you accelerate and brake extensively on the warm up lap, you will have excellent grip on your first lap. I have used this technique even when the ambient temps were around 40 degrees and have had no issues.
I have not discounted them, i just never seriously considered them, (same difference i guess).
There is only ~ $100 difference between 888s and MPSCs in my sizes and my ability to negotiate deals
.If it came down to choosing between one of these two, i think i'd go the French route, but the NT01s keep calling, even though the rears are only 275s.
will let you know what i decide and how things go.
best wishes
Craig
01-06-2009, 12:49 AM
#32
I'm in....
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2) The R888 does not take well to sliding. The RA-1 could be abused and you could slide these tires around the track with no concerns. As a result many 944 spec drivers used this to great advantage by sliding the car to get optimal times. The R888 however seems to overheat much more and a slide will cause a loss of grip that can take multiple laps or even the entire session to recover. As such the R888 needs to be driven with a focus on grip rather than a toss in it and catch it approach. The drivers that like this style or have adapted to it quickly are seeing better results. Those that slide the R888 often feel they are very inconsistant during a run.
.
.
01-06-2009, 02:21 PM
#33
Rennlist Member
I'm probably going to use the R888's this year. I'm planning on just doing DE's this year and then go racing next year.
I have a question about heat cycling. The DE's are usually two days of 4 sessions each. Should I
1) run the tires for one session, take them off and save them for the next event
2) run the tires for one session, take them off and use the next day
3) run the tires on the highway for xxx miles and let sit for one week before the event
4) just run the tires for every session and don't worry about it.
Since it's just DE's, I'm more concerned about longevity than lap times.
I have a question about heat cycling. The DE's are usually two days of 4 sessions each. Should I
1) run the tires for one session, take them off and save them for the next event
2) run the tires for one session, take them off and use the next day
3) run the tires on the highway for xxx miles and let sit for one week before the event
4) just run the tires for every session and don't worry about it.
Since it's just DE's, I'm more concerned about longevity than lap times.
01-06-2009, 02:38 PM
#34
I'm in....
Rennlist Member
Rennlist Member
I'm probably going to use the R888's this year. I'm planning on just doing DE's this year and then go racing next year.
I have a question about heat cycling. The DE's are usually two days of 4 sessions each. Should I
1) run the tires for one session, take them off and save them for the next event
2) run the tires for one session, take them off and use the next day
3) run the tires on the highway for xxx miles and let sit for one week before the event
4) just run the tires for every session and don't worry about it.
Since it's just DE's, I'm more concerned about longevity than lap times.
I have a question about heat cycling. The DE's are usually two days of 4 sessions each. Should I
1) run the tires for one session, take them off and save them for the next event
2) run the tires for one session, take them off and use the next day
3) run the tires on the highway for xxx miles and let sit for one week before the event
4) just run the tires for every session and don't worry about it.
Since it's just DE's, I'm more concerned about longevity than lap times.
You've got them in the right order if you want them to last unless you have roads nearby where you can really get them up to temp without endangering children, animals and other drivers.
01-06-2009, 03:40 PM
#35
Race Director
A proper heat cycle is to run once to get up to operating temps. Then let them sit for at least 24 hrs.
With the RA-1's heat cycling never made any difference. Not sure on the R888. I did heat cycle my first set as it is pretty easy to do with 3 sets of wheels.
If you have the chance heat cycling can't hurt, but if it is complex just run them. I would not bother with time on the public roads. You will never get enough heat in them without risking jail time.
With the RA-1's heat cycling never made any difference. Not sure on the R888. I did heat cycle my first set as it is pretty easy to do with 3 sets of wheels.
If you have the chance heat cycling can't hurt, but if it is complex just run them. I would not bother with time on the public roads. You will never get enough heat in them without risking jail time.
01-06-2009, 07:24 PM
#36
Rennlist Member
I don't think they need heat cycling from everything I've read. Try some variances in pressures.
I believe there was a misnomer somewhere in the US that said to run these at a high hot psi load and I believe this has been adj to a lower number.
I believe there was a misnomer somewhere in the US that said to run these at a high hot psi load and I believe this has been adj to a lower number.
01-06-2009, 09:01 PM
#37
Rennlist Member
These tires love to slide, and are very predictable (RA1)
I think the tires are pretty darn close to the RA1s from what the speedWC guys are saying.
No need to do anything special like the hoosiers.
are they making 295s ?
mk
I think the tires are pretty darn close to the RA1s from what the speedWC guys are saying.
No need to do anything special like the hoosiers.
are they making 295s ?
mk
01-07-2009, 09:24 AM
#38
Race Car
Yup...I ran 295's all year on the rear of my car.
01-09-2009, 08:26 PM
#39
Rennlist Member
Thread Starter
i decided to go with Nitto NT01s
235-40X18
275-35X18
too "small" for rear, but other people that are lot's faster than me with similar cars use them, so i'm sure they will work for me to contunue learning.
will let you know how it goes.
Craig
235-40X18
275-35X18
too "small" for rear, but other people that are lot's faster than me with similar cars use them, so i'm sure they will work for me to contunue learning.
will let you know how it goes.
Craig
01-10-2009, 01:45 AM
#40
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That's fine. Grand am GS class runs 245/275 f/r
You'll have little understeer from the wide front and the narrow rears should be great for learning to control the throttle on exits
You'll have little understeer from the wide front and the narrow rears should be great for learning to control the throttle on exits
01-10-2009, 03:01 AM
#42
Rennlist Member
I thought they were the R888 with another wrapper?
01-10-2009, 09:35 AM
#43
Rennlist Member
01-10-2009, 11:29 AM
#44
Race Director
Anyone seen the new Nitto NT05?
01-10-2009, 01:31 PM
#45
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