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A052 temperature range and pressures

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Old May 11, 2022 | 01:50 PM
  #21  
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Originally Posted by Nate Tempest
Sounds like 52 is probably still strictly better as an autocross tire though, since it gets up to temp right away?
That is pretty much their purpose. I had a brand new set, driven 50 miles to a practice autox. Fastest time I had on them was the first run of the day. They appear to have zero mold release on them too so they literally are fast out of the box. But at events, first run or two are the best on them. This is why the people at nats were running two sets and swapping them mid heat. On the ND1 I co drove on them, unless it was in the 40's out, we tended to spray the hell out of them every run.

I ran them for a standing start time attack event on a track and they did well for me, but there was a lot of time between runs and unlike a standard time attack, you start from a dead stop and take one lap, then go back into line, so lots of cooldown time. But even then I found them falling off some after 6 of those.

The RE-71R would go a lot longer before getting greasy and grip falling off in my experience.
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Old May 13, 2022 | 05:33 AM
  #22  
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To throw in the latest RE71RS, just heard this from a friend who also has a tire biz:

Today was Practice at the Time Trials Nationals, and the top 2 cars in T3 are nearly identical with very fast drivers. Only difference is tires. One car is on Yoks, and the other is on the new RE71RS. Their lap times are both on the same 10th of a second
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Old Jun 16, 2022 | 07:04 PM
  #23  
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I ran A052 on a very chilly late fall day in Road ATL. Amb temp was about 40deg F, started at 34F/32R, ambient air temp must have warmed up to about 58-60deg F over the course of the 30 min session. As mentioned before, 2/3 lap was fastest. Last 2 minutes of session times kept dropping, rear end slipped hard 1-2 and I should've ended the session. But, I didn't. Ended up losing the rear and finding a wall.

Would now agree with, TPMS, and running the A052 at 27/28 cold.

live and learn.
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