I know this is a bit of a thread hijack, so sorry guys.
Its interesting to look at the sidewalls of these tires- the FC front is much more square than the wider tires or even the Fc rear.
I'm thinking that the wide tires will be fantastic at a track like Barber, in July. I ran a whole season on the set you see pictured which shows that what Richard was saying is correct- they never got hot.
I'll do that spin test on my balancer...