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08-22-2020, 04:29 PM | #45 | |
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Driver2 does lose some time, but then they start driving with nice hot tires so it kind of makes up for it |
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08-22-2020, 04:31 PM | #46 | |
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08-22-2020, 04:51 PM | #47 |
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I'll have to give that a shot. Weird issue to have.
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08-23-2020, 03:30 PM | #51 | |
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I have like 6-7 days on my NT-01s and I was thinking about buying new front tires once front shoulders wear out, then move onto something stickier like BFG-R1 once these new fronts + old rears wear out or heat cycled out. |
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08-23-2020, 04:36 PM | #52 | |
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08-25-2020, 06:13 AM | #53 |
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For a hot lap they are easily as sticky as NT01 but the re-71r is worthless after 20 min. Makes it a great autocross tire but not great for a heavier car like the F80 in HPDE. I easily lose 2 seconds a lap once they get too hot. NT01 I've punished for 45 min straight and they remained consistent
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08-25-2020, 09:25 AM | #54 | |
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Full disclosure, I've never ran RE71R but there's a lot of folks on here and off the forum who's driving I respect and the RE71R is definitely the faster tire. SYT_Shadow runs 2:06 at the Glen on RE71R --- you ain't doing that on NT01. |
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08-25-2020, 10:49 AM | #55 | |
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My brother and I dual-duty the M3 with RE71s. The car runs for a full hour at a time. One person is out doing a 2:06, we fuel the car with a jug and then go out for another 30 min. If you go to an AER grid where they run an 8h endurance race, the RE71 is the most common tire. |
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08-25-2020, 12:46 PM | #56 | |
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08-25-2020, 01:44 PM | #57 | |
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08-25-2020, 01:54 PM | #58 | |
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Obviously track surfaces differ. We do not do any cool down laps during a session, but we drive tidyly in general |
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08-25-2020, 02:05 PM | #59 |
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Huh, any idea what car/weight and tire dimensions? Really surprised to hear that, but very interesting given people's results with it.
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08-25-2020, 02:15 PM | #60 | |
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In HPDE we run full weight M3s ~3600lb running 275/35 tires |
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08-25-2020, 03:03 PM | #61 | |
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08-25-2020, 03:06 PM | #62 |
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yes it does!!!!
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08-25-2020, 07:34 PM | #63 | |
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Lots of people including myself would need more experience to know how optimize lap time while maintaining longevity; like experience and skills that would be obtained from the art of endurance racing and such. So for majority of people, it might be not wrong to say it may get 'overheated and greasy' depending on who drive them. |
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08-26-2020, 01:16 PM | #64 | |
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I stopped running it when I was at Mid Ohio frustrated trying to drop from 1:40 with my 10" square 275/35 NT01s. Eventually I threw on my ZCP wheels with 255/275 RE71s which I was using to drive to/from the track and dropped a second. After that and some tire blistering issues I unmounted the NT01s and haven't looked back. The RE71 can take a faster pace for longer than the NT01, but may require cleaner driving to achieve it. At the Glen, the first weekend with the CS we were able to get to 2:06s with 255/275 RE71 tires and stock suspension. That is cookin'! Well driven 991 GT3 RS are in the 2:06-2:08 range on street tires. Note that a 9"/10" setup with 255/275 tires is far from optimum... for a real 'best time' you'd need 285/30 RE71s mounted on 10.5" track wheels The student in question who was overdriving the RE71s got some coaching and stopped doing it almost immediately. They left their 3 day weekend with the tires in great condition and having put down faster lap times than before when they were beating the tires up. Right now I'm running the BFG R1, not the RE71, but if I needed a dual duty tire I'd continue on the RE71 path. I'd also try the A052 which seems real hot just to be sure. |
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08-26-2020, 02:04 PM | #65 | |
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I guess I will never get to try RE-71r on the M4. I am thinking about trying out the BFG R1 next year. Maybe 285 30 18 square mounted on the same 10" front/11" rear APEX wheels that were bought for NT-01s. I know PrimeBMW used them on his E92 with stock suspension before he got MCS. |
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08-26-2020, 02:05 PM | #66 | |
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