G-Force R1 S vs. R6 for Road Atlanta
03-11-2013, 01:08 PM
#1
Instructor
Thread Starter
G-Force R1 S vs. R6 for Road Atlanta
As I like to experiment a bit, I am planning on running fresh sets of both the G-Force R1 S and the R6 at Road Atlanta PCA race.
- Does anyone out there have a feel for which might be the quicker tire given the likely 65 or so degree temps that my run group will likely see at qualifying/race time?
- Does anyone have a feel for the handling differences that I might experience at RA between these two tires?
___________________________
Kevin Cyr
1991 944S2 (Stock E)
#944
- Does anyone out there have a feel for which might be the quicker tire given the likely 65 or so degree temps that my run group will likely see at qualifying/race time?
- Does anyone have a feel for the handling differences that I might experience at RA between these two tires?
___________________________
Kevin Cyr
1991 944S2 (Stock E)
#944
03-11-2013, 01:09 PM
#2
Rennlist Member
R6 will be slightly quicker, R1's will remain more consistent & long lived throughout the weekend. R1's also like a bit more slip angle...
03-11-2013, 01:19 PM
#5
Rennlist Member
Maybe it was my set-up, but for the brief time I ran the R1 I found the R1 to skip at the limit vs the slide of the Hoosier. The latter was far more communicative and controllable. I was running a set-up for the Hoosier which don't need much camber relative to other tires, maybe I needed more for the R1?
03-11-2013, 01:38 PM
#6
Instructor
Thread Starter
I will post which tires generate the best and most consistent times for me as well as my experience as to how my car handles with each set. Hopefully we will have consistent weather.
___________________________
Kevin Cyr
1991 944S2 (Stock E)
#944
03-11-2013, 01:42 PM
#7
Rennlist Member
Oh, poop, sorry, you said R1S, not R1. I have not driven R1 S yes, so I don't know.
Rob, I would imagine it is a bit of set up, but yeah, sometimes the R1 does "hop" on undulating surfaces at the limit.
Rob, I would imagine it is a bit of set up, but yeah, sometimes the R1 does "hop" on undulating surfaces at the limit.
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03-11-2013, 01:47 PM
#8
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I think the OP indicates he will be running the softer R1-S.
I've run the same (R1-S vs. R6) during two different data sessions, and during race weekends.
If ambient and track temps are cool (I've not tested the R1-S at air temps over 75*, but have seen 75* on a sunny day when track was ideal) the advantage to the R1-S is the fact that is absolutely ready to go with the green flag (if heated properly during the out lap), whereas the R6 wants a bit more time to come up. This grip and the concomitant confidence during the first two laps can be a distinct advantage.
The tire is a bit easier to overdrive than the R6, but seems to announce its limit a little more gently - again, I've not used it on a hot day.
Interestingly, it does not seem to be consistantly faster than the R6. I do have one flyer which is 0.3seconds faster than anything I have driven at my home track, but consistant times at my personal best (which I can run within 0.1 sec anytime) are equal for both compounds.
(Edit to add: Of course, I have far more exerience/data with the R6 and have a good feeling for the tire and how to drive it)
The R1-S (two sets) went away after 5 heat cycles; R6s last me the same amount of time and then go away by about 1.25 to 1.5 seconds. The R1-S seems to be a bit more positive at the braking limit and seems to like a bit more slip angle...beyone that, I find no real differences between the tires.
YMMV.
I've run the same (R1-S vs. R6) during two different data sessions, and during race weekends.
If ambient and track temps are cool (I've not tested the R1-S at air temps over 75*, but have seen 75* on a sunny day when track was ideal) the advantage to the R1-S is the fact that is absolutely ready to go with the green flag (if heated properly during the out lap), whereas the R6 wants a bit more time to come up. This grip and the concomitant confidence during the first two laps can be a distinct advantage.
The tire is a bit easier to overdrive than the R6, but seems to announce its limit a little more gently - again, I've not used it on a hot day.
Interestingly, it does not seem to be consistantly faster than the R6. I do have one flyer which is 0.3seconds faster than anything I have driven at my home track, but consistant times at my personal best (which I can run within 0.1 sec anytime) are equal for both compounds.
(Edit to add: Of course, I have far more exerience/data with the R6 and have a good feeling for the tire and how to drive it)
The R1-S (two sets) went away after 5 heat cycles; R6s last me the same amount of time and then go away by about 1.25 to 1.5 seconds. The R1-S seems to be a bit more positive at the braking limit and seems to like a bit more slip angle...beyone that, I find no real differences between the tires.
YMMV.
03-11-2013, 02:06 PM
#9
Instructor
Thread Starter
___________________________
Kevin Cyr
1991 944S2 (Stock E)
#944
03-11-2013, 02:07 PM
#10
Three Wheelin'
I have driven the R1 and R1S vs. the R6. I would the R1 unless it's cool, then run the R1S. My experience is that the R1 is much more consistent through a race than the R6 but takes a bit more time to come up to temp, once there it's a much better performer.
03-11-2013, 09:44 PM
#11
Maybe it was my set-up, but for the brief time I ran the R1 I found the R1 to skip at the limit vs the slide of the Hoosier. The latter was far more communicative and controllable. I was running a set-up for the Hoosier which don't need much camber relative to other tires, maybe I needed more for the R1?
