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Old 08-09-2015, 04:08 PM   #8
GSpeed
 
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Quote:
Originally Posted by strat61caster View Post


I think you're not too far off with your hypothesis, however I would put it in a simpler frame of reference, consider a hard low grip tire. Under duress compared to a stickier grippier tire, the hard tire will flex less, heat up less, and do less work providing less cornering force.

As the sticky tire has heat cycled out and lost it's compliant grippy nature it has morphed into a harder less sticky tire more resistant to cornering forces and heating up like the sticky rubber was.

Under what mechanisms it does that, well you'd have to infiltrate a tire manufacturer's racing division or a privileged race team to get anymore insight than the books your ordering.

But it sounds like you're getting <100 quick laps which translates to <130 minutes of hard running out of RE71R, that's not even 2x track days for us regular folks...
It would be REALLY interesting to see some temperature data on these tires, more than anything else. We routinely saw a second's worth of time lost between morning session and afternoon session based off grip alone. If someone were running these tires in a cooler climate, I doubt they'd kill them as fast as we did. We're probably doing them a disservice by running them this hard.

I feel like we're approaching the limit of what Bridgestone would share with us.
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