And i stand by my point. you may think its faster, but go down a hill, leaving at the same speed and chances are you will end up going very close in speed, if you notice a difference then its the weight/flex of the core causing it. You would get a difference once going over 50 kph, but that's beyond what we do at a park or really anywhere but a mega ramp/extreme hillbomb and even then it's not appreciably noticeable. My mates and i test it all the time, random wheels i own and see which is fastest. That's how i ended up with that result, i don't own every single wheel, but I have a lot (at least 30 different models of wheels, 5 sizes)