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Crash said:
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turbolite said:
Sorry guys, but why should these 7.49 be a valid time?? we dont know which car spec or setup was used, dont know the driver, dont know the measurement procedures, the tyres etc!!!!
this claim, though it looks realistic at first glance is at least as unsubstantiated as the 7.42 of the z06!
It's waste of energy to write dozen of posts on these kind of rumours. unlike for the z06 we do not even have an objective measurement of the 997tt performance times, only factory claims.

so just relax and wait for a test from a decent magazine, then we'll talk again!



It's more valid, since we can compare it to previous Porsche times, such as the 7:56 for a stock Turbo with the mushy suspension (997TT dramatically improved in that area), or the 462 HP GT2 with 7:46. The 7:49 seems entirely realistic, considering the car has more horsepower than the Mk1 GT2, the same brakes, better torque curve and an advanced AWD, which doesn't sap power. On the other hand, we have the C6 Corvette with a time of 8:15, while the claimed time was somewhere in the 7:50's.



As I just said the 997tt time looks very well possible, but it's not proven at all and therefore it's not a valid claim, just speculation.
As much as the 7.42 of the z06 is speculation (and rather admittedly improbable) as nobody knows the details of that run.
Still that car at least has proven it's surprising performance against all sceptics in the recent AMS test, a thing which hasnt happened with the 997tt yet. The burden of proof re performance lies with the Porsche this time...