Horizontally Opposed Man

After reading posts here it sounds like the Goodrich R1 is a well liked tire.I have been running the Toyo R888 On my 996gt3 ever since the RA 1 was phased out.The Triple 8 is a pretty mediocre tire compared to the RA 1 BUT it does last over 40 heat cycles in DE !
Does anyone have a good read on how many usable heat cycles there are in the R1 ?I know everyone loves the Hoosier R6 but the "Financial Metric"doesn't make it for me.thanks and cheers !

KaiB

I've been through 5 sets of R1s now, if one includes the ones in my trailer at the moment.

Longevity is a function of driver input. If you're driving the tire at its limits all of the time, expect it to fall off greatly after about 15 to 16 heat cycles. If not, they will last quite a long time.

On a stock car, driven at DEs, I would expect the tire to last an entire season for a "normal" driver, say 5 events. I like the tire, although is is a second slower than R6s on my car, and continue to use it for the occasional DE.

mglobe

Not a completely easy question to answer in my opinion, as not all heat cycles are equal. Also, unless your definition of a tire being done is cording it, one man's measure of a worn out tire will be different than the next. I've never corded either of these tires. I've always tossed them well before the rubber was gone.

If it is grip that defines when a tire is done for you, I've found that if I'm running an easy DE pace (say 1:57 to 1:59) an R1 will give steady performance for about 30 hc's before tailing off. If you drive them harder ('53's to 55's) they will be heat cycled out in about 15 hc's. You could still practice on them, you just don't want to race them. In my experience that is still better than what the R888's will do. I see performance dropping off in the 888's after 10-15 hc's even at a relaxed pace. At race pace, 8-10 hc's and the 888's are done for me. For both tires (R1's and 888's) there is still plenty of rubber left, there just isn't near the grip.

I love the R1, and highly recommend it, and I suspect that it will give you as much longevity as the Toyo's.

You might also consider the Nitto NT01 tire. Low prices, and much better longevity than the 888's wrt maintaining grip.

trackjunky

OK, so Globe doesn't run a 1:59 at a DE......He's more like 1:55......so he is not at an "easy" pace. He might run a 1:59 in his street car with street tires while making a Martini........

mglobe

Fixed it for you.

utkinpol

how does R1 grip compares to NT01 tire at 4/32th? NT01 tires are also pretty vocal and i like it, do R1 behave in same way or are they silent all the way up?

i have 2/32th left on my front NT01 so trying to decide now either to get new set of NT01 now or try R1 set in 275/335. they have 25.4"/25.7" diameters and it seems to be a better fit for 997.1 car as 275/315 NT01 has on opposite ratio and i am afraid 997.1 ABS may not like it.

mglobe

Both tires driven near their limit, the R1 is probably ~1.5 to 2 seconds a lap faster than the NT01's. The Nittos are definitely more forgiving though. As far as audible feedback, I really don't know, as I really don't use sound all that much for feedback. It's too dependent upon track surface, which varies from turn to turn, to be reliable for me. I go by feel, not by sound in evaluating where my tires are in the grip envelope.

275/335? Holy crap thats an awful lot of tire for a 997.

Veloce Raptor

I used to think the NT01's needed to be shaved like the old RA1's did. I was wrong, they don't. their tread blocks are so huge, use them full tread & after a session they are good to go. And I say old RA1's because the new RA1's are not nearly as good as the old ones.

I concur with Mike Globe that fresh R1's can be very, very close to Hoosier R6's on a non-overweight car properly set up for them: very impressive tire (and unfortunately priced accordingly).

utkinpol

well, looking at tire rack there is nothing in between for rear in 18" - they show 285 tire and next is 335. no 305, no 315. in nt01 they only have 315 for rear and a gap from 245 to 275 in front. go figure.

275 in front is excessive, but with 335 tire in rear when i tried to run on 245 fronts car would push no matter what sway bars and shocks were set to, with 275 tire it is more or less neutral.

i tried 255/305 R888 and size wise this combo was great but tire itself was pretty odd.

Horizontally Opposed Man

So do the 275s actually fit ?I would assume they would scrape a bunch any mods made to improve fitment? The 275/335 set up would have to have tons of grip and be a good balance!

mglobe

Spec996 runs R1's at 245/285. I can turn 1:53's with that much tire, and I suspect that the cars are capable of running in the low '52's. In the R1 the 245/285 stagger leaves the front tires about 1/2" taller than the rear. It's never presented an issue.

Yes you can get a lot of mechanical grip with uber-big tires, but that means you will be learning how to drive at the limit at very high lateral G's. I'm not sure that is optimum.

utkinpol

30 or so DEs ago that would be true, now it does not make much difference, i`m used enough to this. plus, i run quite often on 235/275 Z1 star spec set on 8/10 rims so i am well aware how max grip changes around.

so you think 285 tire would mount on 12" wide rim with no issues? max size shown on tirerack says 11" width - can it be stretched one more inch? not sure why i would do it, but i was always curious to try out overstretched tires as so far i only had either normal fit or staggered. and as i understand to equally stretch front into 9" rim would require 225 tire then? or do you have a special reason to run rear tire stretched with front normal/staggered?

also, abs and PSM wise 996 and 997 cars are exact opposites, i am not sure it will tolerate well above of 1/2" diff as by default it wants a whole 1" diff to have rear tires taller. some folks in 997.1 gt3 cars say they had no issues with taller fronts but, again, ECUs on gt3 cars are different from street cars, so, it would be an experiment to see how it reacts to this change.

Horizontally Opposed Man

So I am running the 255/305 r triple 8 s on my 996 gt3 .Diameter differential according to TireRack is 1.2 inches and HAVE NOT had any ABS issues .The BFG R1 differential 245/285 is .5 inches with the rear tire being the smaller in diameter .Tread width wise the 245 R1 is quoted as being 9.5 inches which is the same as the 255 r888 .In the rear the triple 8 is 11.7 vs the 285 being 11.5 .
All this sounds pretty sweet to me!Seems to me that the R1 is going to have more grip and about the same longevity as the triple 8.The R1 is slightly more expensive but not a huge difference.
SO WHY AREN'T MORE PEOPLE RUNNING THEM?

mkk62

H O man

i run de with 996-3 and ran nittos for a yr then kuhmosv 710 which are1-2 sec faster...tried a set of r6's which in the heat of summer couldnt get them any faster than the kuhmos...

question, if R6's are faster than r-1's and get about 16 hc's out of them , why bother with R1's unless you run an easy DE pace which i have a hard time doing assume cost is about the same..

911FM

Have been running both with a 996 C2 for DE events.

One thing I noted is that the BFG R1 have a much more constant grip at the end of the day. The 888s had a tendency to start sliding / feel greasy by the middle of the afternoon on a hot day. The R1s seem to take a bit more time to get to temperature, especially in cold weather though. They also collect more stones/dirt once hot. I prefer the R1s.

FM