Hello - should I use foam with these tires ?

No never they will suck. Run them foamless.

I hate blanket answers like that. Not even a question to determine the answer.

What type of track are you running on?
For example, we are running on a high bite carpet track and all of the fast guys are running foam inserts with that setup.

Try a set with and without. We always trade stuff around to try it out.

Good luck!

No never they will suck. Run them foamless.