[HypermilerAX]

Originally Posted by Vekke

I am not understanding their calculations:

Weight 795 kg
CD 0,189
A 1,5

Somehow they say that it takes 8,4 hp to run 100 km/h speed?

Only way is that their RR is .012 which is hard to believe :/.

Aerodynamic & rolling resistance, power & MPG calculator - EcoModder.com

795 kg is the empty weight. If you add 160 kg (2 people plus 10 kg fuel) you get a RR of 0.0099 which is plausible. I doubt these tires have anything special RR wise.
The Conti eContact in 125/80 R13 have been advertised like a "ultra low RR tyre for electric cars" and they turn out to be quite average if not bad.