Nice post John
i was on 16s run flats to 17" factory RFT (Bridgestone RE050A) (staggered setup)
love it, in cooler weather can be bit more tyre roar otherwise no complaints, cant wait to one day put non RFT on it from what i have heard on the forum from all .
16s didnt feel as tight or glued to the road as these do, definately lighter hence bit more acceleration with the 16s for sure...
i think that will be another big advantage of the non RFTs