RC:
noone1:

Since when do they engine dyno cars?

Stick track day tires on your track day car and the number stands. Why would you want to track your car with crappy street oriented tires? We already know that the latest generation compounds are a massive improvement. No reason to think they won't be available for customers.

IMO, the car does as they said it would initially. 1.06.3 is as quick as the 918.

The dyno test they are doing is a certified(!) test and pretty close to real output. It provides at least a hint if manufacturers are cheating or not. Surprisingly, BMW and Mercedes always come up with higher than factory  specs figures.

I do not say the GT R is slow but AMG has a "history", sorry to say that...

What exactly is a certified test?