Starting in 2023 the SEDiv CF tire rule will include the vintage treaded tires in addition to the R60A slick. I am making the switch to the Hoosier VFF and went to Road Atlanta a few weeks ago to get a set mounted so I could setup the car. It wasn't a race weekend for me so I did not race. The photo below shows one wheel required 14 1/4 oz wheel weights to balance. The weights cover a quarter of the rim perimeter. Is this normal for the treaded tires? Are they inherently more unbalanced than the slicks? The other three wheels with VFF tires required 5, 8 and 10 1/4 oz balance weights. That's 37 1/4 oz weights in total. When cleaning the wheels before going to Road Atlanta, a total of 17 1/4 oz weights were removed from the four wheels with slicks.
Note that the tires were NOT installed by the usual SEDiv Hoosier tire distributor (i.e. Appalachian Race Tire).