I tried minipins on the front of the car last carpet race we had in Langenfeld, After I had cut 2 rows off them inside and out they were ok. Very aggressive and you need to change the setup completely.
I ended up going back to staggereds because they gave more consistent laptimes and were alot easier to drive hard.
If you are having trouble with the wear of the staggereds build your setup around the worn tires, because they keep the grip fairly well after the initial edges are rounded a little.
Come down to Langenfeld for our Karneval-Race