Originally Posted by David.Yu
American rolling roads...
To be fair, Nissan themselves claimed 10%, but that's nonsense too.
On a UK Dyno Dynamics, there's about a 17% loss, but let's not reopen that can of worms...
I think the loss on dd rollers is calculated not measured. Ie. it's the same for all GTRs as the variables used to calculate it are the same. I don't believe they measure coastdown on the individual car.