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Old 11-01-2018, 04:59 PM   #210
GrandSport
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Drives: 13 Viper; 14 BRZ; 90 Miata; 18 AMG
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Quote:
Originally Posted by Joesurf79 View Post
If your tires are full on greasy on the 2nd full lap, are you sure you aren't just flat over-driving the snot outta the car? Running too much cold pressure ? What hot pressures are you getting right after you pit out? I run with a few people in grand sports on NT01s and they are super sensitive to a few pounds of cold pressure either way...

That could explain the lack of gain from the R888R - any tire can be over driven and once it's out of its operating temp range, it's a losing battle until you back off and cool the tire back to its happy place
Grand sport is heavy with power and good downforce (for what it is). It's pretty easy to get them greasy within a few laps. Maybe it's the third full lap rather than second (I haven't run them since I went though them so fast).

Haven't run NT01 on the GS yet, but R888R are VERY pressure sensitive as well, as you might expect. I can't remember the numbers right now, but I want to say they were good at 33 and worthless at 36 or so. Might be off on those numbers- this was 4 months ago.

edit: and yeah, obviously I was over-driving them
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Last edited by GrandSport; 11-01-2018 at 05:28 PM.
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