Quote:
Originally Posted by GTM_Challenge
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Similarly, we have found that the 255s would keep getting faster and faster throughout the session - 7th/8th laps seemed to be fastest...and then we got the checker.
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Since we keep talking about tires here can we clear some things up? First off, what type of tires and what are their intended heat ranges. This will help folks out when some say they were fastest on a skinnier tire or fastest on a fatter tire... or they were fastest but briefly or "getting faster over time".
Some are designed to operate at their peak without heat (but "drop off"), while others are like driving on ice until they're in excess of 180F (R-Comps).
Street tires (Star Spec, Azenis): Grippy when cold, fall off when hot (typically above 160F).
Road Race R-Comps (R6/C51): Very little grip when cold, maximum grip when hot (between 180-220F) and don't fall off until that is exceeded or the number heat cycles is exceeded.
R-Comp Autocross (A6/C71): R-comp that is designed with maximum grip at low temps, for short durations (specifically auto-crossing).
So GTM, what were those 255's in regards to their compound? Someone earlier (I think D1cker) said he was fastest on the 225's but briefly and I surmise he was
not on an R-comp but instead a street tire.
It is possible, GTM that if your 255 was a street compound that you were "over-tired" until they began to get hot which then you started to see improved lap times or is that the 255 in the compound you were using took 7-8 laps to reach peak grip and ideal operating temp?
Thank you for sharing.