Agree. That car does not suit the chromies. Much prefer the SSR's on it.
From what I have heard from the master tuners, the older/harder the tyre the better for the dyno. Semi's will be getting chewed, not good for the dyno. A perfect example was a couple of years back, Matt's burgundy 33 was struggling on the dyno with the semi's. Changed the tyres to a street tyre and presto....much better on the dyno.