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Bridgstone RE71R

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Old 03-14-2017, 03:00 PM
  #16  
BRNGT4
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Originally Posted by jmartpr
So for track duty you would rate them higher than Trofeos? I'm going to buy a new set after the next event and the RE71Rs are really interesting since they are cheaper and so far the feedback is very good....on the other hand the Trofeos also have good feedback in terms of grip. If you had to pick, which way would you go?....no Hoosiers please as I like to use my car on the street also and trying not to find an excuse to buy dedicated wheels/tires for 6 events per year.
Going to stick to the RE71r from now one. Out of the four i rate them the highest in terms of overall handling and grip.
Old 03-14-2017, 03:03 PM
  #17  
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Originally Posted by MarcD147
you will gain another second by getting your tire pressure to 32-33

when I get to 35 I pit and let air out to 30-31 (always happens first session of day as I start 26-28 depending on conditions)

running 35-36 too long kills the tire; I did it on a set and it really does damage of 2 track days in a single session. lesson learned
Will give it a try next week
Old 03-14-2017, 03:08 PM
  #18  
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Originally Posted by BRNGT4
Going to stick to the RE71r from now one. Out of the four i rate them the highest in terms of overall handling and grip.

Thanks for the feedback on the RE71R....this is great news as it will save me some $$$ on the long run and I won't loose time to various GT3/4s running Trofeos already. Will try them in 20" for the OEM wheels after the next event....still have some life left on the MPSC2.
Old 03-15-2017, 11:58 PM
  #19  
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Originally Posted by ExMB
Nice. Might list your alignment specs to go along with the temp derived hot pressures. Was rear the same pressures and temp?
I ran the rears a little higher than the front. Maybe 2-3psi higher. So 27ish front, 29-30ish rear coming right off the track hot. I think I could have still gone lower.

Originally Posted by CME
I think regardless of tires the stock alignment will destroy them. Need to adjust front caster and rear toe to make proper alignments.
Chet
Actually, this last time out was with my new 3rd gear, straight out of the dealership with stock spec alignment and I came within .3 sec of my fastest lap time that I had previously set on a more aggressive alignment, and on the same exact tires.
Old 03-16-2017, 02:13 AM
  #20  
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Originally Posted by GeoJoe
I ran the rears a little higher than the front. Maybe 2-3psi higher. So 27ish front, 29-30ish rear coming right off the track hot. I think I could have still gone lower.



Actually, this last time out was with my new 3rd gear, straight out of the dealership with stock spec alignment and I came within .3 sec of my fastest lap time that I had previously set on a more aggressive alignment, and on the same exact tires.
Your TPMS must be freaking out when you first head out on track, no? Mine won't let me even enter circuit mode once I get below 26 psi.
Old 03-16-2017, 07:24 AM
  #21  
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Originally Posted by Mech33
Your TPMS must be freaking out when you first head out on track, no? Mine won't let me even enter circuit mode once I get below 26 psi.
I measure PSI with an accurate gauge, manually and often when at the track. I check before and after each session, especially early in the day.

Because of my own measurements, I could care less what the TPMS is telling me on the dash.
Old 03-16-2017, 07:57 AM
  #22  
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Originally Posted by GeoJoe
I measure PSI with an accurate gauge, manually and often when at the track. I check before and after each session, especially early in the day.

Because of my own measurements, I could care less what the TPMS is telling me on the dash.


I also do that (don't trust electronics) but I have found the TPMS to be pretty accurate and if pressure spikes will give you that info on track...
Old 03-16-2017, 09:38 AM
  #23  
MarcD147
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Originally Posted by Mech33
Your TPMS must be freaking out when you first head out on track, no? Mine won't let me even enter circuit mode once I get below 26 psi.
the trick is to switch to circuit mode ("R") with the tires above 26. leave the ignition in and let some air out..


I don't recommend starting below 26... I personally start at 26 and then pit during the 1st session to let some more air out. Safety over an extra lap...
Old 03-25-2017, 01:54 PM
  #24  
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Originally Posted by GeoJoe
I measure PSI with an accurate gauge, manually and often when at the track. I check before and after each session, especially early in the day.

Because of my own measurements, I could care less what the TPMS is telling me on the dash.
I put it in circuit mode primarily to make it not give me errors and warnings while I'm on track.
Old 03-25-2017, 02:03 PM
  #25  
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Originally Posted by MarcD147
the trick is to switch to circuit mode ("R") with the tires above 26. leave the ignition in and let some air out..


I don't recommend starting below 26... I personally start at 26 and then pit during the 1st session to let some more air out. Safety over an extra lap...
Good idea, will try that next time.
Old 03-25-2017, 05:57 PM
  #26  
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Originally Posted by Mech33
I put it in circuit mode primarily to make it not give me errors and warnings while I'm on track.
is there a circuit mode , I haven't noticed ?
Old 03-25-2017, 09:21 PM
  #27  
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I have recently switched to the RE71R from the Dunlops. I have noticed optimal grip around 33psi. I tried 28 hot and the fronts were definitely rolling over. It was accidental as the sun wasn't out at the time and I couldn't get the tires up to pressure. My scrub-in session I noticed pressures spiked up to 38psi. Since then they have stabilized and I can maintain 33psi.

I have noticed the RE71R's take longer to get up to pressure than the Dunlops but definitely hold out longer without falling off. In fact, I was able to run them a full HOUR this past Friday really pushing the car hard. They never fell off. I would watch the pressures and run a lap at 80% when the pressures would get up to 35. The pressures would drop back down to 33 and I was able to run 5-6 laps (2:23 lap times) without any issues. Overall I am impressed with their performance.

I am running the SC2's on my GT3 it still. I wish Bridgestone would produce them in GT3 fitment as I would run them.

- Chris.
Old 03-29-2017, 04:22 PM
  #28  
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Originally Posted by Hams955
I am running the SC2's on my GT3 it still. I wish Bridgestone would produce them in GT3 fitment as I would run them.
I have been bugging Bridgestone for over a year to make a 305/30-20 and they still aren't out. You just have to switch to 19" rims on the GT3 and you can fit the RE71-R. Orthojoe is running them in 255/305 on his GT3 and loving them.
https://rennlist.com/forums/991-gt3-...l#post14045346

TT
Old 03-29-2017, 10:41 PM
  #29  
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Can't wait to use them on track.
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Old 03-30-2017, 09:11 AM
  #30  
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Looks like these have finally made it to Australia!


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